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libnfs/lib/nfs_v3.c

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/* -*- mode:c; tab-width:8; c-basic-offset:8; indent-tabs-mode:nil; -*- */
/*
Copyright (C) 2017 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* High level api to nfsv3 filesystems
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef AROS
#include "aros_compat.h"
#endif
#ifdef PS2_EE
#include "ps2_compat.h"
#endif
#ifdef PS3_PPU
#include "ps3_compat.h"
#endif
#ifdef WIN32
#include <win32/win32_compat.h>
#endif
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#else
#define PRIu64 "llu"
#endif
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
#if defined(__ANDROID__) && !defined(HAVE_SYS_STATVFS_H)
#define statvfs statfs
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef MAJOR_IN_MKDEV
#include <sys/mkdev.h>
#endif
#ifdef HAVE_SYS_SYSMACROS_H
#include <sys/sysmacros.h>
#endif
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "libnfs-zdr.h"
#include "slist.h"
#include "libnfs.h"
#include "libnfs-raw.h"
#include "libnfs-raw-mount.h"
#include "libnfs-private.h"
static dev_t
specdata3_to_rdev(struct specdata3 *rdev)
{
#ifdef makedev
return makedev(rdev->specdata1, rdev->specdata2);
#else
return 0;
#endif
}
struct mount_attr_cb {
int wait_count;
struct nfs_cb_data *data;
};
struct mount_attr_item_cb {
struct mount_attr_cb *ma;
struct nested_mounts *mnt;
};
struct nfs_mcb_data {
struct nfs_cb_data *data;
uint64_t offset;
size_t count;
};
static int
check_nfs3_error(struct nfs_context *nfs, int status,
struct nfs_cb_data *data, void *command_data)
{
if (status == RPC_STATUS_ERROR) {
data->cb(-EFAULT, nfs, command_data, data->private_data);
return 1;
}
if (status == RPC_STATUS_CANCEL) {
data->cb(-EINTR, nfs, "Command was cancelled",
data->private_data);
return 1;
}
if (status == RPC_STATUS_TIMEOUT) {
data->cb(-EINTR, nfs, "Command timed out",
data->private_data);
return 1;
}
return 0;
}
static int nfs3_lookup_path_async_internal(struct nfs_context *nfs,
struct nfs_attr *attr,
struct nfs_cb_data *data,
struct nfs_fh *fh);
/*
* Functions to first look up a path, component by component, and then finally
* call a specific function once the filehandle for the final component is
* found.
*/
static void
nfs3_lookup_path_2_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
READLINK3res *res;
char *path, *newpath;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: READLINK of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
path = res->READLINK3res_u.resok.data;
/* Handle absolute paths, ensuring that the path lies within the
* export. */
if (path[0] == '/') {
if (strstr(path, nfs_get_export(nfs)) == path) {
char *ptr = path + strlen(nfs_get_export(nfs));
if (*ptr == '/') {
newpath = strdup(ptr);
} else if (*ptr == '\0') {
newpath = strdup("/");
} else {
data->cb(-ENOENT, nfs, "Symbolic link points "
"outside export", data->private_data);
free_nfs_cb_data(data);
return;
}
} else {
data->cb(-ENOENT, nfs, "Symbolic link points outside "
"export", data->private_data);
free_nfs_cb_data(data);
return;
}
if (!newpath)
goto nomem;
} else {
/* Handle relative paths, both the case where the current
* component is an intermediate component and when it is the
* final component. */
if (data->path[0]) {
/* Since path points to a component and saved_path
* always starts with '/', path[-1] is valid. */
data->path[-1] = '\0';
newpath = malloc(strlen(data->saved_path) +
strlen(path) + strlen(data->path) + 6);
if (!newpath)
goto nomem;
sprintf(newpath, "%s/../%s/%s", data->saved_path, path,
data->path);
} else {
newpath = malloc(strlen(data->saved_path) +
strlen(path) + 5);
if (!newpath)
goto nomem;
sprintf(newpath, "%s/../%s", data->saved_path, path);
}
}
free(data->saved_path);
data->saved_path = newpath;
if (nfs_normalize_path(nfs, data->saved_path) != 0) {
data->cb(-ENOENT, nfs, "Symbolic link resolves to invalid "
"path", data->private_data);
free_nfs_cb_data(data);
return;
}
data->path = data->saved_path;
nfs3_lookup_path_async_internal(nfs, NULL, data, &nfs->nfsi->rootfh);
return;
nomem:
data->cb(-ENOMEM, nfs, "Failed to allocate memory for path",
data->private_data);
free_nfs_cb_data(data);
}
static void
fattr3_to_nfs_attr(struct nfs_attr *attr, fattr3 *fa3)
{
attr->type = fa3->type;
attr->mode = fa3->mode;
attr->uid = fa3->uid;
attr->gid = fa3->gid;
attr->nlink = fa3->nlink;
attr->size = fa3->size;
attr->used = fa3->used;
attr->fsid = fa3->fsid;
attr->rdev.specdata1 = fa3->rdev.specdata1;
attr->rdev.specdata2 = fa3->rdev.specdata2;
attr->atime.seconds = fa3->atime.seconds;
attr->atime.nseconds = fa3->atime.nseconds;
attr->mtime.seconds = fa3->mtime.seconds;
attr->mtime.nseconds = fa3->mtime.nseconds;
attr->ctime.seconds = fa3->ctime.seconds;
attr->ctime.nseconds = fa3->ctime.nseconds;
}
static void
nfs3_lookup_path_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
LOOKUP3res *res;
struct nfs_attr attr;
struct nfs_fh fh;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: Lookup of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
memset(&attr, 0, sizeof(attr));
if (res->LOOKUP3res_u.resok.obj_attributes.attributes_follow) {
fattr3_to_nfs_attr(&attr, &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes);
}
/* This function will always invoke the callback and cleanup
* for failures. So no need to check the return value.
*/
fh.val = res->LOOKUP3res_u.resok.object.data.data_val;
fh.len = res->LOOKUP3res_u.resok.object.data.data_len;
nfs3_lookup_path_async_internal(nfs, &attr, data, &fh);
}
static int
nfs3_lookup_path_async_internal(struct nfs_context *nfs, struct nfs_attr *attr,
struct nfs_cb_data *data, struct nfs_fh *fh)
{
char *path, *slash;
LOOKUP3args args;
while (*data->path == '/') {
data->path++;
}
path = data->path;
slash = strchr(path, '/');
if (attr && attr->type == NF3LNK) {
if (data->continue_int & O_NOFOLLOW) {
data->cb(-ELOOP, nfs, "Symbolic link encountered",
data->private_data);
free_nfs_cb_data(data);
return -1;
}
if (!data->no_follow || *path != '\0') {
READLINK3args rl_args;
if (data->link_count++ >= MAX_LINK_COUNT) {
data->cb(-ELOOP, nfs, "Too many levels of "
"symbolic links", data->private_data);
free_nfs_cb_data(data);
return -1;
}
rl_args.symlink.data.data_len = fh->len;
rl_args.symlink.data.data_val = fh->val;
if (rpc_nfs3_readlink_async(nfs->rpc,
nfs3_lookup_path_2_cb,
&rl_args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to "
"send READLINK call for %s",
data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
if (slash != NULL) {
*slash = '/';
}
return 0;
}
}
if (slash != NULL) {
/* Clear slash so that path is a zero terminated string for
* the current path component. Set it back to '/' again later
* when we are finished referencing this component so that
* data->saved_path will still point to the full
* normalized path.
*/
*slash = 0;
data->path = slash+1;
} else {
while (*data->path != 0) {
data->path++;
}
}
if (*path == 0) {
data->fh.len = fh->len;
data->fh.val = malloc(data->fh.len);
if (data->fh.val == NULL) {
nfs_set_error(nfs, "Out of memory: Failed to "
"allocate fh for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
memcpy(data->fh.val, fh->val, data->fh.len);
if (slash != NULL) {
*slash = '/';
}
data->continue_cb(nfs, attr, data);
return 0;
}
memset(&args, 0, sizeof(LOOKUP3args));
args.what.dir.data.data_len = fh->len;
args.what.dir.data.data_val = fh->val;
args.what.name = path;
if (rpc_nfs3_lookup_async(nfs->rpc, nfs3_lookup_path_1_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send lookup "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
if (slash != NULL) {
*slash = '/';
}
return 0;
}
static void
nfs3_lookup_path_getattr_cb(struct rpc_context *rpc, int status,
void *command_data, void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
GETATTR3res *res;
struct nfs_attr attr;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: GETATTR of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
fattr3_to_nfs_attr(&attr, &res->GETATTR3res_u.resok.obj_attributes);
/* This function will always invoke the callback and cleanup
* for failures. So no need to check the return value.
*/
nfs3_lookup_path_async_internal(nfs, &attr, data, &nfs->nfsi->rootfh);
}
/* This function will free continue_data on error */
static int
nfs3_lookuppath_async(struct nfs_context *nfs, const char *path, int no_follow,
nfs_cb cb, void *private_data,
continue_func continue_cb, void *continue_data,
void (*free_continue_data)(void *),
uint64_t continue_int)
{
struct nfs_cb_data *data;
struct GETATTR3args args;
struct nfs_fh *fh;
if (path == NULL || path[0] == '\0') {
path = ".";
}
data = calloc(1, sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "Out of memory: failed to allocate "
"nfs_cb_data structure");
if (continue_data) {
free_continue_data(continue_data);
}
return -1;
}
data->nfs = nfs;
data->cb = cb;
data->continue_cb = continue_cb;
data->continue_data = continue_data;
data->free_continue_data = free_continue_data;
data->continue_int = continue_int;
data->private_data = private_data;
data->no_follow = no_follow;
if (path[0] == '/') {
data->saved_path = strdup(path);
} else {
data->saved_path = malloc(strlen(path) + strlen(nfs->nfsi->cwd) + 2);
if (data->saved_path == NULL) {
nfs_set_error(nfs, "Out of memory: failed to "
"allocate path string");
free_nfs_cb_data(data);
return -1;
}
sprintf(data->saved_path, "%s/%s", nfs->nfsi->cwd, path);
}
if (data->saved_path == NULL) {
nfs_set_error(nfs, "Out of memory: failed to copy path "
"string");
free_nfs_cb_data(data);
return -1;
}
if (nfs_normalize_path(nfs, data->saved_path) != 0) {
free_nfs_cb_data(data);
return -1;
}
data->path = data->saved_path;
fh = &nfs->nfsi->rootfh;
if (data->path[0]) {
struct nested_mounts *mnt;
/* Make sure we match on longest nested export.
* TODO: If we make sure the list is sorted we can skip this
* check and end the loop on first match.
*/
size_t max_match_len = 0;
/* Do we need to switch to a different nested export ? */
for (mnt = nfs->nfsi->nested_mounts; mnt; mnt = mnt->next) {
if (strlen(mnt->path) < max_match_len)
continue;
if (strncmp(mnt->path, data->saved_path,
strlen(mnt->path)))
continue;
if (data->saved_path[strlen(mnt->path)] != '\0'
&& data->saved_path[strlen(mnt->path)] != '/')
continue;
data->saved_path = strdup(data->path
+ strlen(mnt->path));
free(data->path);
data->path = data->saved_path;
fh = &mnt->fh;
max_match_len = strlen(mnt->path);
}
/* This function will always invoke the callback and cleanup
* for failures. So no need to check the return value.
*/
nfs3_lookup_path_async_internal(nfs, NULL, data, fh);
return 0;
}
/* We have a request for "", so just perform a GETATTR3 so we can
* return the attributes to the caller.
*/
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = fh->len;
args.object.data.data_val = fh->val;
if (rpc_nfs3_getattr_async(nfs->rpc, nfs3_lookup_path_getattr_cb,
&args, data) != 0) {
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static void
nfs3_mount_8_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct mount_attr_item_cb *ma_item = private_data;
struct mount_attr_cb *ma = ma_item->ma;
struct nfs_cb_data *data = ma->data;
struct nfs_context *nfs = data->nfs;
GETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (status != RPC_STATUS_SUCCESS) {
goto finished;
}
res = command_data;
if (res->status != NFS3_OK)
goto finished;
fattr3_to_nfs_attr(&ma_item->mnt->attr,
&res->GETATTR3res_u.resok.obj_attributes);
finished:
free(ma_item);
ma->wait_count--;
if (ma->wait_count > 0)
return;
free(ma);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static void
nfs3_mount_7_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct mount_attr_cb *ma = NULL;
struct nested_mounts *mnt;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
if (!nfs->nfsi->nested_mounts)
goto finished;
/* nested mount traversals are best-effort only, so any
* failures just means that we don't get traversal for that
* particular mount. We do not fail the call from the application.
*/
ma = malloc(sizeof(struct mount_attr_cb));
if (ma == NULL)
goto finished;
memset(ma, 0, sizeof(struct mount_attr_cb));
ma->data = data;
for(mnt = nfs->nfsi->nested_mounts; mnt; mnt = mnt->next) {
struct mount_attr_item_cb *ma_item;
struct GETATTR3args args;
ma_item = malloc(sizeof(struct mount_attr_item_cb));
if (ma_item == NULL)
goto finished;
ma_item->mnt = mnt;
ma_item->ma = ma;
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = mnt->fh.len;
args.object.data.data_val = mnt->fh.val;
if (rpc_nfs3_getattr_async(rpc, nfs3_mount_8_cb, &args,
ma_item) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__,
nfs_get_error(nfs));
free(ma_item);
continue;
}
ma->wait_count++;
}
finished:
if (ma && ma->wait_count)
return;
free(ma);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static void
nfs3_mount_6_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
FSINFO3res *res = command_data;
struct GETATTR3args args;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: FSINFO of %s failed with %s(%d)",
nfs_get_export(nfs), nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs->nfsi->readmax = res->FSINFO3res_u.resok.rtmax;
nfs->nfsi->writemax = res->FSINFO3res_u.resok.wtmax;
/* The server supports sizes up to rtmax and wtmax, so it is legal
* to use smaller transfers sizes.
*/
if (nfs->nfsi->readmax > NFS_MAX_XFER_SIZE)
nfs->nfsi->readmax = NFS_MAX_XFER_SIZE;
else if (nfs->nfsi->readmax < NFSMAXDATA2) {
nfs_set_error(nfs, "server max rsize of %" PRIu64,
nfs->nfsi->readmax);
data->cb(-EINVAL, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
if (nfs->nfsi->writemax > NFS_MAX_XFER_SIZE)
nfs->nfsi->writemax = NFS_MAX_XFER_SIZE;
else if (nfs->nfsi->writemax < NFSMAXDATA2) {
nfs_set_error(nfs, "server max wsize of %" PRIu64,
nfs->nfsi->writemax);
data->cb(-EINVAL, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = nfs->nfsi->rootfh.len;
args.object.data.data_val = nfs->nfsi->rootfh.val;
if (rpc_nfs3_getattr_async(rpc, nfs3_mount_7_cb, &args, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
}
static void
nfs3_mount_5_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct FSINFO3args args;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
/* NFS TCP: As we are connected now we can pass on the auto-reconnect
* settings to the RPC layer.
*/
rpc_set_autoreconnect(rpc, nfs->nfsi->auto_reconnect);
args.fsroot.data.data_len = nfs->nfsi->rootfh.len;
args.fsroot.data.data_val = nfs->nfsi->rootfh.val;
if (rpc_nfs3_fsinfo_async(rpc, nfs3_mount_6_cb, &args, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
}
struct mount_discovery_cb {
int wait_count;
int error;
int status;
struct nfs_cb_data *data;
};
struct mount_discovery_item_cb {
struct mount_discovery_cb *md_cb;
char *path;
};
static void
nfs3_mount_4_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct mount_discovery_item_cb *md_item_cb = private_data;
struct mount_discovery_cb *md_cb = md_item_cb->md_cb;
struct nfs_cb_data *data = md_cb->data;
struct nfs_context *nfs = data->nfs;
mountres3 *res;
struct nested_mounts *mnt;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (status == RPC_STATUS_ERROR) {
nfs_set_error(nfs, "MOUNT failed with RPC_STATUS_ERROR");
md_cb->error = -EFAULT;
goto finished;
}
if (status == RPC_STATUS_CANCEL) {
nfs_set_error(nfs, "MOUNT failed with RPC_STATUS_CANCEL");
md_cb->status = RPC_STATUS_CANCEL;
goto finished;
}
if (status == RPC_STATUS_TIMEOUT) {
nfs_set_error(nfs, "MOUNT timed out");
md_cb->status = RPC_STATUS_TIMEOUT;
goto finished;
}
res = command_data;
if (res->fhs_status != MNT3_OK) {
nfs_set_error(nfs, "RPC error: Mount failed with error "
"%s(%d) %s(%d)",
mountstat3_to_str(res->fhs_status),
res->fhs_status,
strerror(-mountstat3_to_errno(res->fhs_status)),
-mountstat3_to_errno(res->fhs_status));
md_cb->error = mountstat3_to_errno(res->fhs_status);
goto finished;
}
mnt = malloc(sizeof(*mnt));
if (mnt == NULL) {
nfs_set_error(nfs, "Out of memory. Could not allocate memory "
"to store mount handle");
md_cb->error = -ENOMEM;
goto finished;
}
memset(mnt, 0, sizeof(*mnt));
mnt->fh.len = res->mountres3_u.mountinfo.fhandle.fhandle3_len;
mnt->fh.val = malloc(mnt->fh.len);
if (mnt->fh.val == NULL) {
free(mnt);
goto finished;
}
memcpy(mnt->fh.val,
res->mountres3_u.mountinfo.fhandle.fhandle3_val,
mnt->fh.len);
mnt->path = md_item_cb->path;
md_item_cb->path = NULL;
LIBNFS_LIST_ADD(&nfs->nfsi->nested_mounts, mnt);
finished:
free(md_item_cb->path);
free(md_item_cb);
md_cb->wait_count--;
if (md_cb->wait_count > 0)
return;
rpc_disconnect(rpc, "normal disconnect");
if (md_cb->status == RPC_STATUS_CANCEL) {
data->cb(-EINTR, nfs, "Command was cancelled",
data->private_data);
free(md_cb);
free_nfs_cb_data(data);
return;
}
if (md_cb->error) {
data->cb(md_cb->error, nfs, command_data, data->private_data);
free(md_cb);
free_nfs_cb_data(data);
return;
}
if (nfs->nfsi->nfsport) {
if (rpc_connect_port_async(nfs->rpc, nfs_get_server(nfs),
nfs->nfsi->nfsport,
NFS_PROGRAM, NFS_V3,
nfs3_mount_5_cb, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__,
nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free(md_cb);
free_nfs_cb_data(data);
return;
}
return;
}
if (rpc_connect_program_async(nfs->rpc, nfs_get_server(nfs),
NFS_PROGRAM,
NFS_V3, nfs3_mount_5_cb, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free(md_cb);
free_nfs_cb_data(data);
return;
}
free(md_cb);
}
static void
nfs3_mount_3_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
exports res;
int len;
struct mount_discovery_cb *md_cb = NULL;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
/* Iterate over all exports and check if there are any mounts nested
* below the current mount.
*/
len = strlen(nfs_get_export(nfs));
if (!len) {
data->cb(-EFAULT, nfs, "Export is empty", data->private_data);
free_nfs_cb_data(data);
return;
}
res = *(exports *)command_data;
while (res) {
struct mount_discovery_item_cb *md_item_cb;
if (strncmp(nfs_get_export(nfs), res->ex_dir, len)) {
res = res->ex_next;
continue;
}
if (res->ex_dir[len - 1] != '/' && res->ex_dir[len] != '/') {
res = res->ex_next;
continue;
}
/* There is no need to fail the whole mount if anything
* below fails. Just clean up and continue. At worst it
* just mean that we might not be able to access any nested
* mounts.
*/
md_item_cb = malloc(sizeof(*md_item_cb));
if (md_item_cb == NULL)
continue;
memset(md_item_cb, 0, sizeof(*md_item_cb));
md_item_cb->path = strdup(res->ex_dir + len
- (nfs_get_export(nfs)[len -1] == '/'));
if (md_item_cb->path == NULL) {
free(md_item_cb);
continue;
}
if (md_cb == NULL) {
md_cb = malloc(sizeof(*md_cb));
if (md_cb == NULL) {
free(md_item_cb->path);
free(md_item_cb);
continue;
}
memset(md_cb, 0, sizeof(*md_cb));
md_cb->data = data;
md_cb->status = RPC_STATUS_SUCCESS;
md_cb->error = 0;
}
md_item_cb->md_cb = md_cb;
if (rpc_mount3_mnt_async(rpc, nfs3_mount_4_cb,
res->ex_dir, md_item_cb) != 0) {
nfs_set_error(nfs, "%s: %s",
__FUNCTION__, nfs_get_error(nfs));
if (md_cb->wait_count == 0) {
free(md_cb);
md_cb = NULL;
}
free(md_item_cb->path);
free(md_item_cb);
continue;
}
md_cb->wait_count++;
res = res->ex_next;
}
if (md_cb)
return;
/* We did not have any nested mounts to check so we can proceed straight
* to reconnecting to NFSd.
*/
rpc_disconnect(rpc, "normal disconnect");
if (nfs->nfsi->nfsport) {
if (rpc_connect_port_async(nfs->rpc, nfs_get_server(nfs),
nfs->nfsi->nfsport,
NFS_PROGRAM, NFS_V3,
nfs3_mount_5_cb, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__,
nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
return;
}
if (rpc_connect_program_async(nfs->rpc, nfs_get_server(nfs),
NFS_PROGRAM,
NFS_V3, nfs3_mount_5_cb, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
}
static void
nfs3_mount_2_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
mountres3 *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->fhs_status != MNT3_OK) {
nfs_set_error(nfs, "RPC error: Mount failed with error "
"%s(%d) %s(%d)",
mountstat3_to_str(res->fhs_status),
res->fhs_status,
strerror(-mountstat3_to_errno(res->fhs_status)),
-mountstat3_to_errno(res->fhs_status));
data->cb(mountstat3_to_errno(res->fhs_status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs->nfsi->rootfh.len = res->mountres3_u.mountinfo.fhandle.fhandle3_len;
nfs->nfsi->rootfh.val = malloc(nfs->nfsi->rootfh.len);
if (nfs->nfsi->rootfh.val == NULL) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
memcpy(nfs->nfsi->rootfh.val,
res->mountres3_u.mountinfo.fhandle.fhandle3_val,
nfs->nfsi->rootfh.len);
if (nfs->nfsi->auto_traverse_mounts) {
if (rpc_mount3_export_async(rpc, nfs3_mount_3_cb, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__,
nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
return;
}
rpc_disconnect(rpc, "normal disconnect");
if (nfs->nfsi->nfsport) {
if (rpc_connect_port_async(nfs->rpc, nfs_get_server(nfs),
nfs->nfsi->nfsport,
NFS_PROGRAM, NFS_V3,
nfs3_mount_5_cb, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__,
nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
return;
}
if (rpc_connect_program_async(nfs->rpc, nfs_get_server(nfs),
NFS_PROGRAM,
NFS_V3, nfs3_mount_5_cb, data) != 0) {
nfs_set_error(nfs, "%s: %s", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
}
static void
nfs3_mount_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
if (rpc_mount3_mnt_async(rpc, nfs3_mount_2_cb, nfs->nfsi->export,
data) != 0) {
nfs_set_error(nfs, "%s: %s.", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
}
int
nfs3_mount_async(struct nfs_context *nfs, const char *server,
const char *export, nfs_cb cb, void *private_data)
{
struct nfs_cb_data *data;
char *new_server, *new_export;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory. failed to allocate "
"memory for nfs mount data");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
new_server = strdup(server);
new_export = strdup(export);
if (nfs->nfsi->server != NULL) {
free(nfs->nfsi->server);
}
nfs->nfsi->server = new_server;
if (nfs->nfsi->export != NULL) {
free(nfs->nfsi->export);
}
nfs->nfsi->export = new_export;
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
if (nfs->nfsi->mountport) {
if (rpc_connect_port_async(nfs->rpc, server, nfs->nfsi->mountport,
MOUNT_PROGRAM, MOUNT_V3,
nfs3_mount_1_cb, data) != 0) {
nfs_set_error(nfs, "Failed to start connection. %s",
nfs_get_error(nfs));
free_nfs_cb_data(data);
return -1;
}
return 0;
}
if (rpc_connect_program_async(nfs->rpc, server,
MOUNT_PROGRAM, MOUNT_V3,
nfs3_mount_1_cb, data) != 0) {
nfs_set_error(nfs, "Failed to start connection. %s",
nfs_get_error(nfs));
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static void
nfs3_umount_2_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
rpc_disconnect(rpc, "umount");
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static void
nfs3_umount_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
if (rpc_mount3_umnt_async(rpc, nfs3_umount_2_cb, nfs->nfsi->export,
data) != 0) {
nfs_set_error(nfs, "%s: %s.", __FUNCTION__, nfs_get_error(nfs));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
}
int
nfs3_umount_async(struct nfs_context *nfs, nfs_cb cb, void *private_data)
{
struct nfs_cb_data *data;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory. failed to allocate "
"memory for nfs mount data");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
rpc_disconnect(nfs->rpc, "umount");
if (nfs->nfsi->mountport) {
if (rpc_connect_port_async(nfs->rpc, nfs_get_server(nfs),
nfs->nfsi->mountport,
MOUNT_PROGRAM, MOUNT_V3,
nfs3_umount_1_cb, data) != 0) {
nfs_set_error(nfs, "Failed to start connection. %s",
nfs_get_error(nfs));
free_nfs_cb_data(data);
return -1;
}
return 0;
}
if (rpc_connect_program_async(nfs->rpc, nfs_get_server(nfs),
MOUNT_PROGRAM, MOUNT_V3,
nfs3_umount_1_cb, data) != 0) {
nfs_set_error(nfs, "Failed to start connection. %s",
nfs_get_error(nfs));
free_nfs_cb_data(data);
return -1;
}
return 0;
}
struct nfs_link_data {
char *oldpath;
struct nfs_fh oldfh;
char *newparent;
char *newobject;
struct nfs_fh newdir;
};
static void
free_nfs_link_data(void *mem)
{
struct nfs_link_data *data = mem;
free(data->oldpath);
free(data->oldfh.val);
free(data->newparent);
free(data->newobject);
free(data->newdir.val);
free(data);
}
static void
nfs3_link_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
LINK3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfs_link_data *link_data = data->continue_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: LINK %s -> %s/%s failed with "
"%s(%d)", link_data->oldpath,
link_data->newparent,
link_data->newobject,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &link_data->newdir);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_link_continue_2_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct nfs_link_data *link_data = data->continue_data;
LINK3args args;
/* steal the filehandle */
link_data->newdir = data->fh;
data->fh.val = NULL;
memset(&args, 0, sizeof(LINK3args));
args.file.data.data_len = link_data->oldfh.len;
args.file.data.data_val = link_data->oldfh.val;
args.link.dir.data.data_len = link_data->newdir.len;
args.link.dir.data.data_val = link_data->newdir.val;
args.link.name = link_data->newobject;
if (rpc_nfs3_link_async(nfs->rpc, nfs3_link_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send LINK "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static int
nfs3_link_continue_1_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct nfs_link_data *link_data = data->continue_data;
/* steal the filehandle */
link_data->oldfh = data->fh;
data->fh.val = NULL;
if (nfs3_lookuppath_async(nfs, link_data->newparent, 0,
data->cb, data->private_data,
nfs3_link_continue_2_internal,
link_data, free_nfs_link_data, 0) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
data->continue_data = NULL;
free_nfs_cb_data(data);
return -1;
}
data->continue_data = NULL;
free_nfs_cb_data(data);
return 0;
}
int
nfs3_link_async(struct nfs_context *nfs, const char *oldpath,
const char *newpath, nfs_cb cb, void *private_data)
{
char *ptr;
struct nfs_link_data *link_data;
link_data = malloc(sizeof(struct nfs_link_data));
if (link_data == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for link data");
return -1;
}
memset(link_data, 0, sizeof(struct nfs_link_data));
link_data->oldpath = strdup(oldpath);
if (link_data->oldpath == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for oldpath");
free_nfs_link_data(link_data);
return -1;
}
link_data->newobject = strdup(newpath);
if (link_data->newobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to strdup "
"newpath");
free_nfs_link_data(link_data);
return -1;
}
ptr = strrchr(link_data->newobject, '/');
if (ptr == NULL) {
link_data->newparent = NULL;
} else {
*ptr = 0;
link_data->newparent = link_data->newobject;
ptr++;
link_data->newobject = strdup(ptr);
}
if (link_data->newobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for newobject");
free_nfs_link_data(link_data);
return -1;
}
if (nfs3_lookuppath_async(nfs, link_data->oldpath, 0,
cb, private_data,
nfs3_link_continue_1_internal,
link_data, free_nfs_link_data, 0) != 0) {
return -1;
}
return 0;
}
struct nfs_rename_data {
char *oldparent;
char *oldobject;
struct nfs_fh olddir;
char *newparent;
char *newobject;
struct nfs_fh newdir;
};
static void
free_nfs_rename_data(void *mem)
{
struct nfs_rename_data *data = mem;
free(data->oldparent);
free(data->oldobject);
free(data->olddir.val);
free(data->newparent);
free(data->newobject);
free(data->newdir.val);
free(data);
}
static void
nfs3_rename_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
RENAME3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfs_rename_data *rename_data = data->continue_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: RENAME %s/%s -> %s/%s failed "
"with %s(%d)", rename_data->oldparent,
rename_data->oldobject, rename_data->newparent,
rename_data->newobject,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_rename_continue_2_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct nfs_rename_data *rename_data = data->continue_data;
RENAME3args args;
/* Drop the destination directory from the cache */
nfs_dircache_drop(nfs, &data->fh);
/* steal the filehandle */
rename_data->newdir = data->fh;
data->fh.val = NULL;
args.from.dir.data.data_len = rename_data->olddir.len;
args.from.dir.data.data_val = rename_data->olddir.val;
args.from.name = rename_data->oldobject;
args.to.dir.data.data_len = rename_data->newdir.len;
args.to.dir.data.data_val = rename_data->newdir.val;
args.to.name = rename_data->newobject;
if (rpc_nfs3_rename_async(nfs->rpc, nfs3_rename_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send RENAME "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static int
nfs3_rename_continue_1_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct nfs_rename_data *rename_data = data->continue_data;
/* Drop the source directory from the cache */
nfs_dircache_drop(nfs, &data->fh);
/* steal the filehandle */
rename_data->olddir = data->fh;
data->fh.val = NULL;
if (nfs3_lookuppath_async(nfs, rename_data->newparent, 0,
data->cb, data->private_data,
nfs3_rename_continue_2_internal,
rename_data, free_nfs_rename_data, 0) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
data->continue_data = NULL;
free_nfs_cb_data(data);
return -1;
}
data->continue_data = NULL;
free_nfs_cb_data(data);
return 0;
}
int
nfs3_rename_async(struct nfs_context *nfs, const char *oldpath,
const char *newpath, nfs_cb cb, void *private_data)
{
char *ptr;
struct nfs_rename_data *rename_data;
rename_data = malloc(sizeof(struct nfs_rename_data));
if (rename_data == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for rename data");
return -1;
}
memset(rename_data, 0, sizeof(struct nfs_rename_data));
rename_data->oldobject = strdup(oldpath);
if (rename_data->oldobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to strdup "
"oldpath");
free_nfs_rename_data(rename_data);
return -1;
}
ptr = strrchr(rename_data->oldobject, '/');
if (ptr == NULL) {
rename_data->oldparent = NULL;
} else {
*ptr = 0;
rename_data->oldparent = rename_data->oldobject;
ptr++;
rename_data->oldobject = strdup(ptr);
}
if (rename_data->oldobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for oldobject");
free_nfs_rename_data(rename_data);
return -1;
}
rename_data->newobject = strdup(newpath);
if (rename_data->newobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to strdup "
"newpath");
free_nfs_rename_data(rename_data);
return -1;
}
ptr = strrchr(rename_data->newobject, '/');
if (ptr == NULL) {
rename_data->newparent = NULL;
} else {
*ptr = 0;
rename_data->newparent = rename_data->newobject;
ptr++;
rename_data->newobject = strdup(ptr);
}
if (rename_data->newobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for newobject");
free_nfs_rename_data(rename_data);
return -1;
}
if (nfs3_lookuppath_async(nfs, rename_data->oldparent, 0,
cb, private_data,
nfs3_rename_continue_1_internal,
rename_data, free_nfs_rename_data, 0) != 0) {
return -1;
}
return 0;
}
struct nfs_symlink_data {
char *target;
char *linkparent;
char *linkobject;
};
static void
free_nfs_symlink_data(void *mem)
{
struct nfs_symlink_data *data = mem;
free(data->target);
free(data->linkparent);
free(data->linkobject);
free(data);
}
static void
nfs3_symlink_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
SYMLINK3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfs_symlink_data *symlink_data = data->continue_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: SYMLINK %s/%s -> %s failed with "
"%s(%d)", symlink_data->linkparent,
symlink_data->linkobject,
symlink_data->target,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_symlink_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct nfs_symlink_data *symlink_data = data->continue_data;
SYMLINK3args args;
memset(&args, 0, sizeof(SYMLINK3args));
args.where.dir.data.data_len = data->fh.len;
args.where.dir.data.data_val = data->fh.val;
args.where.name = symlink_data->linkobject;
args.symlink.symlink_attributes.mode.set_it = 1;
args.symlink.symlink_attributes.mode.set_mode3_u.mode = S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH;
args.symlink.symlink_data = symlink_data->target;
if (rpc_nfs3_symlink_async(nfs->rpc, nfs3_symlink_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send SYMLINK "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_symlink_async(struct nfs_context *nfs, const char *target,
const char *linkname, nfs_cb cb, void *private_data)
{
char *ptr;
struct nfs_symlink_data *symlink_data;
symlink_data = malloc(sizeof(struct nfs_symlink_data));
if (symlink_data == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for symlink data");
return -1;
}
memset(symlink_data, 0, sizeof(struct nfs_symlink_data));
symlink_data->target = strdup(target);
if (symlink_data->target == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for target");
free_nfs_symlink_data(symlink_data);
return -1;
}
symlink_data->linkobject = strdup(linkname);
if (symlink_data->linkobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to strdup "
"linkname");
free_nfs_symlink_data(symlink_data);
return -1;
}
ptr = strrchr(symlink_data->linkobject, '/');
if (ptr == NULL) {
symlink_data->linkparent = NULL;
} else {
*ptr = 0;
symlink_data->linkparent = symlink_data->linkobject;
ptr++;
symlink_data->linkobject = strdup(ptr);
}
if (symlink_data->linkobject == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"mode buffer for new path");
free_nfs_symlink_data(symlink_data);
return -1;
}
if (nfs3_lookuppath_async(nfs, symlink_data->linkparent, 0,
cb, private_data,
nfs3_symlink_continue_internal,
symlink_data, free_nfs_symlink_data, 0)
!= 0) {
return -1;
}
return 0;
}
static void
nfs3_access2_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
ACCESS3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
unsigned int result = 0;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: ACCESS of %s failed with %s(%d)",
data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
if (res->ACCESS3res_u.resok.access & ACCESS3_READ) {
result |= R_OK;
}
if (res->ACCESS3res_u.resok.access & (ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE)) {
result |= W_OK;
}
if (res->ACCESS3res_u.resok.access & (ACCESS3_LOOKUP | ACCESS3_EXECUTE)) {
result |= X_OK;
}
data->cb(result, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_access2_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
ACCESS3args args;
memset(&args, 0, sizeof(ACCESS3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
args.access = ACCESS3_READ | ACCESS3_LOOKUP | ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE | ACCESS3_EXECUTE;
if (rpc_nfs3_access_async(nfs->rpc, nfs3_access2_cb,
&args, data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_access2_async(struct nfs_context *nfs, const char *path, nfs_cb cb,
void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_access2_continue_internal,
NULL, NULL, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_access_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
ACCESS3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
unsigned int mode = 0;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: ACCESS of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
if ((data->continue_int & R_OK) && (res->ACCESS3res_u.resok.access & ACCESS3_READ)) {
mode |= R_OK;
}
if ((data->continue_int & W_OK) && (res->ACCESS3res_u.resok.access & (ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE))) {
mode |= W_OK;
}
if ((data->continue_int & X_OK) && (res->ACCESS3res_u.resok.access & (ACCESS3_LOOKUP | ACCESS3_EXECUTE))) {
mode |= X_OK;
}
if (data->continue_int != mode) {
nfs_set_error(nfs, "NFS: ACCESS denied. Required access "
"%c%c%c. Allowed access %c%c%c",
data->continue_int&R_OK?'r':'-',
data->continue_int&W_OK?'w':'-',
data->continue_int&X_OK?'x':'-',
mode&R_OK?'r':'-',
mode&W_OK?'w':'-',
mode&X_OK?'x':'-');
data->cb(-EACCES, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_access_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
int nfsmode = 0;
ACCESS3args args;
if (data->continue_int & R_OK) {
nfsmode |= ACCESS3_READ;
}
if (data->continue_int & W_OK) {
nfsmode |= ACCESS3_MODIFY | ACCESS3_EXTEND | ACCESS3_DELETE;
}
if (data->continue_int & X_OK) {
nfsmode |= ACCESS3_LOOKUP | ACCESS3_EXECUTE;
}
memset(&args, 0, sizeof(ACCESS3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
args.access = nfsmode;
if (rpc_nfs3_access_async(nfs->rpc, nfs3_access_cb, &args, data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_access_async(struct nfs_context *nfs, const char *path, int mode,
nfs_cb cb, void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_access_continue_internal,
NULL, NULL,
mode & (R_OK | W_OK | X_OK)) != 0) {
return -1;
}
return 0;
}
static void
nfs3_utimes_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
SETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: SETATTR failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_utimes_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
SETATTR3args args;
struct timeval *utimes_data = data->continue_data;
memset(&args, 0, sizeof(SETATTR3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
if (utimes_data != NULL) {
args.new_attributes.atime.set_it = SET_TO_CLIENT_TIME;
args.new_attributes.atime.set_atime_u.atime.seconds = utimes_data[0].tv_sec;
args.new_attributes.atime.set_atime_u.atime.nseconds = utimes_data[0].tv_usec * 1000;
args.new_attributes.mtime.set_it = SET_TO_CLIENT_TIME;
args.new_attributes.mtime.set_mtime_u.mtime.seconds = utimes_data[1].tv_sec;
args.new_attributes.mtime.set_mtime_u.mtime.nseconds = utimes_data[1].tv_usec * 1000;
} else {
args.new_attributes.atime.set_it = SET_TO_SERVER_TIME;
args.new_attributes.mtime.set_it = SET_TO_SERVER_TIME;
}
if (rpc_nfs3_setattr_async(nfs->rpc, nfs3_utimes_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send SETATTR "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_utimes_async_internal(struct nfs_context *nfs, const char *path,
int no_follow, struct timeval *times,
nfs_cb cb, void *private_data)
{
struct timeval *new_times = NULL;
if (times != NULL) {
new_times = malloc(sizeof(struct timeval)*2);
if (new_times == NULL) {
nfs_set_error(nfs, "Failed to allocate memory "
"for timeval structure");
return -1;
}
memcpy(new_times, times, sizeof(struct timeval)*2);
}
if (nfs3_lookuppath_async(nfs, path, no_follow, cb, private_data,
nfs3_utimes_continue_internal,
new_times, free, 0) != 0) {
return -1;
}
return 0;
}
int
nfs3_utime_async(struct nfs_context *nfs, const char *path,
struct utimbuf *times, nfs_cb cb, void *private_data)
{
struct timeval *new_times = NULL;
if (times != NULL) {
new_times = malloc(sizeof(struct timeval)*2);
if (new_times == NULL) {
nfs_set_error(nfs, "Failed to allocate memory "
"for timeval structure");
return -1;
}
new_times[0].tv_sec = times->actime;
new_times[0].tv_usec = 0;
new_times[1].tv_sec = times->modtime;
new_times[1].tv_usec = 0;
}
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_utimes_continue_internal,
new_times, free, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_chown_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
SETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: SETATTR failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
struct nfs_chown_data {
uid_t uid;
gid_t gid;
};
static int
nfs3_chown_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
SETATTR3args args;
struct nfs_chown_data *chown_data = data->continue_data;
memset(&args, 0, sizeof(SETATTR3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
if (chown_data->uid != (uid_t)-1) {
args.new_attributes.uid.set_it = 1;
args.new_attributes.uid.set_uid3_u.uid = chown_data->uid;
}
if (chown_data->gid != (gid_t)-1) {
args.new_attributes.gid.set_it = 1;
args.new_attributes.gid.set_gid3_u.gid = chown_data->gid;
}
if (rpc_nfs3_setattr_async(nfs->rpc, nfs3_chown_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send SETATTR "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_chown_async_internal(struct nfs_context *nfs, const char *path,
int no_follow, int uid, int gid,
nfs_cb cb, void *private_data)
{
struct nfs_chown_data *chown_data;
chown_data = malloc(sizeof(struct nfs_chown_data));
if (chown_data == NULL) {
nfs_set_error(nfs, "Failed to allocate memory for "
"chown data structure");
return -1;
}
chown_data->uid = uid;
chown_data->gid = gid;
if (nfs3_lookuppath_async(nfs, path, no_follow, cb, private_data,
nfs3_chown_continue_internal,
chown_data, free, 0) != 0) {
return -1;
}
return 0;
}
int
nfs3_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid,
int gid, nfs_cb cb, void *private_data)
{
struct nfs_cb_data *data;
struct nfs_chown_data *chown_data;
chown_data = malloc(sizeof(struct nfs_chown_data));
if (chown_data == NULL) {
nfs_set_error(nfs, "Failed to allocate memory for "
"fchown data structure");
return -1;
}
chown_data->uid = uid;
chown_data->gid = gid;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory. failed to allocate "
"memory for fchown data");
free(chown_data);
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
data->continue_data = chown_data;
data->free_continue_data = free;
data->fh.len = nfsfh->fh.len;
data->fh.val = malloc(data->fh.len);
if (data->fh.val == NULL) {
nfs_set_error(nfs, "Out of memory: Failed to allocate fh");
free_nfs_cb_data(data);
return -1;
}
memcpy(data->fh.val, nfsfh->fh.val, data->fh.len);
if (nfs3_chown_continue_internal(nfs, NULL, data) != 0) {
return -1;
}
return 0;
}
static void
nfs3_chmod_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
SETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: SETATTR failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_chmod_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
SETATTR3args args;
memset(&args, 0, sizeof(SETATTR3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
args.new_attributes.mode.set_it = 1;
args.new_attributes.mode.set_mode3_u.mode = (mode3)data->continue_int;
if (rpc_nfs3_setattr_async(nfs->rpc, nfs3_chmod_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send SETATTR "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_chmod_async_internal(struct nfs_context *nfs, const char *path,
int no_follow, int mode, nfs_cb cb,
void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, no_follow, cb, private_data,
nfs3_chmod_continue_internal,
NULL, NULL, mode) != 0) {
return -1;
}
return 0;
}
int
nfs3_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode,
nfs_cb cb, void *private_data)
{
struct nfs_cb_data *data;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory. failed to allocate "
"memory for fchmod data");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
data->continue_int = mode;
data->fh.len = nfsfh->fh.len;
data->fh.val = malloc(data->fh.len);
if (data->fh.val == NULL) {
nfs_set_error(nfs, "Out of memory: Failed to allocate fh");
free_nfs_cb_data(data);
return -1;
}
memcpy(data->fh.val, nfsfh->fh.val, data->fh.len);
if (nfs3_chmod_continue_internal(nfs, NULL, data) != 0) {
return -1;
}
return 0;
}
static void
nfs3_readlink_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
READLINK3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: READLINK of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
data->cb(0, nfs, res->READLINK3res_u.resok.data, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_readlink_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
READLINK3args args;
args.symlink.data.data_val = data->fh.val;
args.symlink.data.data_len = data->fh.len;
if (rpc_nfs3_readlink_async(nfs->rpc, nfs3_readlink_1_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send READLINK "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb,
void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, 1, cb, private_data,
nfs3_readlink_continue_internal,
NULL, NULL, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_statvfs_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
FSSTAT3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct statvfs svfs;
struct nfs_statvfs_64 svfs64;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: FSSTAT of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
if (data->continue_int == 0) {
/* statvfs */
svfs.f_bsize = NFS_BLKSIZE;
svfs.f_frsize = NFS_BLKSIZE;
svfs.f_blocks = res->FSSTAT3res_u.resok.tbytes/NFS_BLKSIZE;
svfs.f_bfree = res->FSSTAT3res_u.resok.fbytes/NFS_BLKSIZE;
svfs.f_bavail = res->FSSTAT3res_u.resok.abytes/NFS_BLKSIZE;
svfs.f_files = (uint32_t)res->FSSTAT3res_u.resok.tfiles;
svfs.f_ffree = (uint32_t)res->FSSTAT3res_u.resok.ffiles;
#if !defined(__ANDROID__)
svfs.f_favail = (uint32_t)res->FSSTAT3res_u.resok.afiles;
svfs.f_fsid = 0;
svfs.f_flag = 0;
svfs.f_namemax = 256;
#endif
data->cb(0, nfs, &svfs, data->private_data);
} else {
/* statvfs64 */
svfs64.f_bsize = NFS_BLKSIZE;
svfs64.f_frsize = NFS_BLKSIZE;
svfs64.f_blocks = res->FSSTAT3res_u.resok.tbytes/NFS_BLKSIZE;
svfs64.f_bfree = res->FSSTAT3res_u.resok.fbytes/NFS_BLKSIZE;
svfs64.f_bavail = res->FSSTAT3res_u.resok.abytes/NFS_BLKSIZE;
svfs64.f_files = res->FSSTAT3res_u.resok.tfiles;
svfs64.f_ffree = res->FSSTAT3res_u.resok.ffiles;
svfs64.f_favail = res->FSSTAT3res_u.resok.afiles;
svfs64.f_fsid = 0;
svfs64.f_flag = 0;
svfs64.f_namemax = 256;
data->cb(0, nfs, &svfs64, data->private_data);
}
free_nfs_cb_data(data);
}
static int
nfs3_statvfs_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
FSSTAT3args args;
args.fsroot.data.data_len = data->fh.len;
args.fsroot.data.data_val = data->fh.val;
if (rpc_nfs3_fsstat_async(nfs->rpc, nfs3_statvfs_1_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send FSSTAT "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb,
void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_statvfs_continue_internal,
NULL, NULL, 0) != 0) {
return -1;
}
return 0;
}
int
nfs3_statvfs64_async(struct nfs_context *nfs, const char *path, nfs_cb cb,
void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_statvfs_continue_internal,
NULL, NULL, 1) != 0) {
return -1;
}
return 0;
}
static void
nfs3_lseek_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
GETATTR3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
int64_t size = 0;
int64_t offset = (int64_t) data->offset;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: GETATTR failed with "
"%s(%d)", nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free(data);
return;
}
size = (int64_t)res->GETATTR3res_u.resok.obj_attributes.size;
if (offset < 0 &&
-offset > (int64_t)size) {
data->cb(-EINVAL, nfs, &data->nfsfh->offset,
data->private_data);
} else {
data->nfsfh->offset = data->offset + size;
data->cb(0, nfs, &data->nfsfh->offset, data->private_data);
}
free(data);
}
int
nfs3_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int64_t offset,
int whence, nfs_cb cb, void *private_data)
{
struct nfs_cb_data *data;
struct GETATTR3args args;
if (whence == SEEK_SET) {
if (offset < 0) {
cb(-EINVAL, nfs, &nfsfh->offset, private_data);
} else {
nfsfh->offset = offset;
cb(0, nfs, &nfsfh->offset, private_data);
}
return 0;
}
if (whence == SEEK_CUR) {
if (offset < 0 &&
nfsfh->offset < (uint64_t)(-offset)) {
cb(-EINVAL, nfs, &nfsfh->offset, private_data);
} else {
nfsfh->offset += offset;
cb(0, nfs, &nfsfh->offset, private_data);
}
return 0;
}
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "Out Of Memory: Failed to malloc nfs "
"cb data");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->nfsfh = nfsfh;
data->offset = offset;
data->cb = cb;
data->private_data = private_data;
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = nfsfh->fh.len;
args.object.data.data_val = nfsfh->fh.val;
if (rpc_nfs3_getattr_async(nfs->rpc, nfs3_lseek_1_cb,
&args, data) != 0) {
free(data);
return -1;
}
return 0;
}
/* ReadDirPlus Emulation Callback data */
struct rdpe_cb_data {
int getattrcount;
int status;
struct nfs_cb_data *data;
};
/* ReadDirPlus Emulation LOOKUP Callback data */
struct rdpe_lookup_cb_data {
struct rdpe_cb_data *rdpe_cb_data;
struct nfsdirent *nfsdirent;
};
/* Workaround for servers lacking READDIRPLUS.
* Use READDIR instead and a GETATTR-loop */
static void
nfs3_opendir_3_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
LOOKUP3res *res = command_data;
struct rdpe_lookup_cb_data *rdpe_lookup_cb_data = private_data;
struct rdpe_cb_data *rdpe_cb_data = rdpe_lookup_cb_data->rdpe_cb_data;
struct nfs_cb_data *data = rdpe_cb_data->data;
struct nfsdir *nfsdir = data->continue_data;
struct nfs_context *nfs = data->nfs;
struct nfsdirent *nfsdirent = rdpe_lookup_cb_data->nfsdirent;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
free(rdpe_lookup_cb_data);
rdpe_cb_data->getattrcount--;
if (status == RPC_STATUS_ERROR) {
nfs_set_error(nfs, "LOOKUP during READDIRPLUS emulation "
"failed with RPC_STATUS_ERROR");
rdpe_cb_data->status = RPC_STATUS_ERROR;
}
if (status == RPC_STATUS_CANCEL) {
nfs_set_error(nfs, "LOOKUP during READDIRPLUS emulation "
"failed with RPC_STATUS_CANCEL");
rdpe_cb_data->status = RPC_STATUS_CANCEL;
}
if (status == RPC_STATUS_TIMEOUT) {
nfs_set_error(nfs, "LOOKUP during READDIRPLUS emulation "
"timed out");
rdpe_cb_data->status = RPC_STATUS_CANCEL;
}
if (status == RPC_STATUS_SUCCESS && res->status == NFS3_OK) {
if (res->LOOKUP3res_u.resok.obj_attributes.attributes_follow) {
fattr3 *attributes = &res->LOOKUP3res_u.resok.obj_attributes.post_op_attr_u.attributes;
nfsdirent->type = attributes->type;
nfsdirent->mode = attributes->mode;
switch (nfsdirent->type) {
case NF3REG: nfsdirent->mode |= S_IFREG; break;
case NF3DIR: nfsdirent->mode |= S_IFDIR; break;
case NF3BLK: nfsdirent->mode |= S_IFBLK; break;
case NF3CHR: nfsdirent->mode |= S_IFCHR; break;
case NF3LNK: nfsdirent->mode |= S_IFLNK; break;
case NF3SOCK: nfsdirent->mode |= S_IFSOCK; break;
case NF3FIFO: nfsdirent->mode |= S_IFIFO; break;
};
nfsdirent->size = attributes->size;
nfsdirent->atime.tv_sec = attributes->atime.seconds;
nfsdirent->atime.tv_usec = attributes->atime.nseconds/1000;
nfsdirent->atime_nsec = attributes->atime.nseconds;
nfsdirent->mtime.tv_sec = attributes->mtime.seconds;
nfsdirent->mtime.tv_usec = attributes->mtime.nseconds/1000;
nfsdirent->mtime_nsec = attributes->mtime.nseconds;
nfsdirent->ctime.tv_sec = attributes->ctime.seconds;
nfsdirent->ctime.tv_usec = attributes->ctime.nseconds/1000;
nfsdirent->ctime_nsec = attributes->ctime.nseconds;
nfsdirent->uid = attributes->uid;
nfsdirent->gid = attributes->gid;
nfsdirent->nlink = attributes->nlink;
nfsdirent->dev = attributes->fsid;
nfsdirent->rdev = specdata3_to_rdev(&attributes->rdev);
nfsdirent->blksize = NFS_BLKSIZE;
nfsdirent->blocks = (attributes->used + 512 - 1) / 512;
nfsdirent->used = attributes->used;
}
}
if (rdpe_cb_data->getattrcount == 0) {
if (rdpe_cb_data->status != RPC_STATUS_SUCCESS) {
nfs_set_error(nfs, "READDIRPLUS emulation "
"failed: %s", rpc_get_error(rpc));
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
nfs_free_nfsdir(nfsdir);
} else {
data->cb(0, nfs, nfsdir, data->private_data);
}
free(rdpe_cb_data);
data->continue_data = NULL;
free_nfs_cb_data(data);
}
}
static int
lookup_missing_attributes(struct nfs_context *nfs,
struct nfsdir *nfsdir,
struct nfs_cb_data *data)
{
struct rdpe_cb_data *rdpe_cb_data = NULL;
struct nfsdirent *nfsdirent;
for (nfsdirent = nfsdir->entries;
nfsdirent;
nfsdirent = nfsdirent->next) {
struct rdpe_lookup_cb_data *rdpe_lookup_cb_data;
LOOKUP3args args;
/* If type == 0 we assume it is a case of the server not
* giving us the attributes for this entry during READIR[PLUS]
* so we fallback to LOOKUP3
*/
if (nfsdirent->type != 0) {
continue;
}
if (rdpe_cb_data == NULL) {
rdpe_cb_data = malloc(sizeof(struct rdpe_cb_data));
rdpe_cb_data->getattrcount = 0;
rdpe_cb_data->status = RPC_STATUS_SUCCESS;
rdpe_cb_data->data = data;
}
rdpe_lookup_cb_data = malloc(sizeof(struct rdpe_lookup_cb_data));
rdpe_lookup_cb_data->rdpe_cb_data = rdpe_cb_data;
rdpe_lookup_cb_data->nfsdirent = nfsdirent;
memset(&args, 0, sizeof(LOOKUP3args));
args.what.dir.data.data_len = data->fh.len;
args.what.dir.data.data_val = data->fh.val;
args.what.name = nfsdirent->name;
if (rpc_nfs3_lookup_async(nfs->rpc, nfs3_opendir_3_cb, &args,
rdpe_lookup_cb_data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send "
"READDIR LOOKUP call");
/* if we have already commands in flight, we cant just
* stop, we have to wait for the commands in flight to
* complete
*/
continue;
}
rdpe_cb_data->getattrcount++;
}
if (rdpe_cb_data != NULL) {
return rdpe_cb_data->getattrcount;
}
return 0;
}
static void
nfs3_opendir_2_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
READDIR3res *res = command_data;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfsdir *nfsdir = data->continue_data;
struct nfsdirent *nfsdirent;
struct entry3 *entry;
uint64_t cookie = 0;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: READDIR of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
entry =res->READDIR3res_u.resok.reply.entries;
while (entry != NULL) {
nfsdirent = malloc(sizeof(struct nfsdirent));
if (nfsdirent == NULL) {
data->cb(-ENOMEM, nfs, "Failed to allocate dirent",
data->private_data);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
memset(nfsdirent, 0, sizeof(struct nfsdirent));
nfsdirent->name = strdup(entry->name);
if (nfsdirent->name == NULL) {
data->cb(-ENOMEM, nfs, "Failed to allocate "
"dirent->name", data->private_data);
free(nfsdirent);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
nfsdirent->inode = entry->fileid;
nfsdirent->next = nfsdir->entries;
nfsdir->entries = nfsdirent;
cookie = entry->cookie;
entry = entry->nextentry;
}
if (res->READDIR3res_u.resok.reply.eof == 0) {
READDIR3args args;
args.dir.data.data_len = data->fh.len;
args.dir.data.data_val = data->fh.val;
args.cookie = cookie;
memcpy(&args.cookieverf, res->READDIR3res_u.resok.cookieverf,
sizeof(cookieverf3));
args.count = 8192;
if (rpc_nfs3_readdir_async(nfs->rpc, nfs3_opendir_2_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send "
"READDIR call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
return;
}
if (res->READDIR3res_u.resok.dir_attributes.attributes_follow)
fattr3_to_nfs_attr(&nfsdir->attr, &res->READDIR3res_u.resok.dir_attributes.post_op_attr_u.attributes);
/* steal the dirhandle */
nfsdir->current = nfsdir->entries;
if (lookup_missing_attributes(nfs, nfsdir, data) == 0) {
data->cb(0, nfs, nfsdir, data->private_data);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
}
static void
nfs3_opendir_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
READDIRPLUS3res *res = command_data;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfsdir *nfsdir = data->continue_data;
struct entryplus3 *entry;
uint64_t cookie = 0;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
if (status == RPC_STATUS_SUCCESS && res->status == NFS3ERR_NOTSUPP) {
READDIR3args args;
args.dir.data.data_len = data->fh.len;
args.dir.data.data_val = data->fh.val;
args.cookie = cookie;
memset(&args.cookieverf, 0, sizeof(cookieverf3));
args.count = 8192;
if (rpc_nfs3_readdir_async(nfs->rpc, nfs3_opendir_2_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send "
"READDIR call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
return;
}
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: READDIRPLUS of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
entry =res->READDIRPLUS3res_u.resok.reply.entries;
while (entry != NULL) {
struct nfsdirent *nfsdirent;
struct nfs_attr attr;
int has_attr = 0;
memset(&attr, 0, sizeof(attr));
nfsdirent = malloc(sizeof(struct nfsdirent));
if (nfsdirent == NULL) {
data->cb(-ENOMEM, nfs, "Failed to allocate dirent",
data->private_data);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
memset(nfsdirent, 0, sizeof(struct nfsdirent));
nfsdirent->name = strdup(entry->name);
if (nfsdirent->name == NULL) {
data->cb(-ENOMEM, nfs, "Failed to allocate "
"dirent->name", data->private_data);
free(nfsdirent);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
nfsdirent->inode = entry->fileid;
if (entry->name_attributes.attributes_follow) {
fattr3_to_nfs_attr(&attr, &entry->name_attributes.post_op_attr_u.attributes);
has_attr = 1;
}
if (!has_attr) {
struct nested_mounts *mnt;
int splen = strlen(data->saved_path);
/* A single '/' is a special case, treat it as
* zero-length below. */
if (splen == 1)
splen = 0;
/* No name attributes. Is it a nested mount then?*/
for(mnt = nfs->nfsi->nested_mounts; mnt; mnt = mnt->next) {
if (strncmp(data->saved_path, mnt->path, splen))
continue;
if (mnt->path[splen] != '/')
continue;
if (strcmp(mnt->path + splen + 1, entry->name))
continue;
attr = mnt->attr;
has_attr = 1;
break;
}
}
if (has_attr) {
struct specdata3 sd3 = { attr.rdev.specdata1,
attr.rdev.specdata2 };
nfsdirent->type = attr.type;
nfsdirent->mode = attr.mode;
switch (nfsdirent->type) {
case NF3REG: nfsdirent->mode |= S_IFREG; break;
case NF3DIR: nfsdirent->mode |= S_IFDIR; break;
case NF3BLK: nfsdirent->mode |= S_IFBLK; break;
case NF3CHR: nfsdirent->mode |= S_IFCHR; break;
case NF3LNK: nfsdirent->mode |= S_IFLNK; break;
case NF3SOCK: nfsdirent->mode |= S_IFSOCK; break;
case NF3FIFO: nfsdirent->mode |= S_IFIFO; break;
};
nfsdirent->size = attr.size;
nfsdirent->atime.tv_sec = attr.atime.seconds;
nfsdirent->atime.tv_usec = attr.atime.nseconds/1000;
nfsdirent->atime_nsec = attr.atime.nseconds;
nfsdirent->mtime.tv_sec = attr.mtime.seconds;
nfsdirent->mtime.tv_usec = attr.mtime.nseconds/1000;
nfsdirent->mtime_nsec = attr.mtime.nseconds;
nfsdirent->ctime.tv_sec = attr.ctime.seconds;
nfsdirent->ctime.tv_usec = attr.ctime.nseconds/1000;
nfsdirent->ctime_nsec = attr.ctime.nseconds;
nfsdirent->uid = attr.uid;
nfsdirent->gid = attr.gid;
nfsdirent->nlink = attr.nlink;
nfsdirent->dev = attr.fsid;
nfsdirent->rdev = specdata3_to_rdev(&sd3);
nfsdirent->blksize = NFS_BLKSIZE;
nfsdirent->blocks = (attr.used + 512 - 1) / 512;
nfsdirent->used = attr.used;
}
nfsdirent->next = nfsdir->entries;
nfsdir->entries = nfsdirent;
cookie = entry->cookie;
entry = entry->nextentry;
}
if (res->READDIRPLUS3res_u.resok.reply.eof == 0) {
READDIRPLUS3args args;
args.dir.data.data_len = data->fh.len;
args.dir.data.data_val = data->fh.val;
args.cookie = cookie;
memcpy(&args.cookieverf,
res->READDIRPLUS3res_u.resok.cookieverf,
sizeof(cookieverf3));
args.dircount = 8192;
args.maxcount = 8192;
if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs3_opendir_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send "
"READDIRPLUS call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
nfs_free_nfsdir(nfsdir);
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
return;
}
if (res->READDIRPLUS3res_u.resok.dir_attributes.attributes_follow) {
fattr3_to_nfs_attr(&nfsdir->attr, &res->READDIRPLUS3res_u.resok.dir_attributes.post_op_attr_u.attributes);
}
/* steal the dirhandle */
nfsdir->current = nfsdir->entries;
if (lookup_missing_attributes(nfs, nfsdir, data) == 0) {
data->cb(0, nfs, nfsdir, data->private_data);
/* We can not free data->continue_data here */
data->continue_data = NULL;
free_nfs_cb_data(data);
return;
}
}
static int
nfs3_opendir_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr,
struct nfs_cb_data *data)
{
READDIRPLUS3args args;
struct nfsdir *nfsdir = data->continue_data;
struct nfsdir *cached;
cached = nfs_dircache_find(nfs, &data->fh);
if (cached) {
if (attr && attr->mtime.seconds == cached->attr.mtime.seconds
&& attr->mtime.nseconds == cached->attr.mtime.nseconds) {
cached->current = cached->entries;
data->cb(0, nfs, cached, data->private_data);
free_nfs_cb_data(data);
return 0;
} else {
/* cache must be stale */
nfs_free_nfsdir(cached);
}
}
nfsdir->fh.len = data->fh.len;
nfsdir->fh.val = malloc(nfsdir->fh.len);
if (nfsdir->fh.val == NULL) {
nfs_set_error(nfs, "OOM when allocating fh for nfsdir");
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
memcpy(nfsdir->fh.val, data->fh.val, data->fh.len);
args.dir.data.data_len = data->fh.len;
args.dir.data.data_val = data->fh.val;
args.cookie = 0;
memset(&args.cookieverf, 0, sizeof(cookieverf3));
args.dircount = 8192;
args.maxcount = 8192;
if (rpc_nfs3_readdirplus_async(nfs->rpc, nfs3_opendir_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send "
"READDIRPLUS call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb,
void *private_data)
{
struct nfsdir *nfsdir;
nfsdir = malloc(sizeof(struct nfsdir));
if (nfsdir == NULL) {
nfs_set_error(nfs, "failed to allocate buffer for nfsdir");
return -1;
}
memset(nfsdir, 0, sizeof(struct nfsdir));
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_opendir_continue_internal,
nfsdir, free, 0) != 0) {
return -1;
}
return 0;
}
struct mknod_cb_data {
char *path;
int mode;
int major;
int minor;
};
static void
free_mknod_cb_data(void *ptr)
{
struct mknod_cb_data *data = ptr;
free(data->path);
free(data);
}
static void
nfs3_mknod_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
MKNOD3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
char *str = data->continue_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
str = &str[strlen(str) + 1];
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: MKNOD of %s/%s failed with "
"%s(%d)", data->saved_path, str,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_mknod_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct mknod_cb_data *cb_data = data->continue_data;
char *str = cb_data->path;
MKNOD3args args;
memset(&args, 0, sizeof(args));
str = &str[strlen(str) + 1];
args.where.dir.data.data_len = data->fh.len;
args.where.dir.data.data_val = data->fh.val;
args.where.name = str;
switch (cb_data->mode & S_IFMT) {
case S_IFCHR:
args.what.type = NF3CHR;
args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_it = 1;
args.what.mknoddata3_u.chr_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
args.what.mknoddata3_u.chr_device.spec.specdata1 = cb_data->major;
args.what.mknoddata3_u.chr_device.spec.specdata2 = cb_data->minor;
break;
case S_IFBLK:
args.what.type = NF3BLK;
args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_it = 1;
args.what.mknoddata3_u.blk_device.dev_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
args.what.mknoddata3_u.blk_device.spec.specdata1 = cb_data->major;
args.what.mknoddata3_u.blk_device.spec.specdata2 = cb_data->minor;
break;
case S_IFSOCK:
args.what.type = NF3SOCK;
args.what.mknoddata3_u.sock_attributes.mode.set_it = 1;
args.what.mknoddata3_u.sock_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
break;
case S_IFIFO:
args.what.type = NF3FIFO;
args.what.mknoddata3_u.pipe_attributes.mode.set_it = 1;
args.what.mknoddata3_u.pipe_attributes.mode.set_mode3_u.mode = cb_data->mode & (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
break;
default:
nfs_set_error(nfs, "Invalid file type for "
"NFS3/MKNOD call");
data->cb(-EINVAL, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
if (rpc_nfs3_mknod_async(nfs->rpc, nfs3_mknod_cb, &args, data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_mknod_async(struct nfs_context *nfs, const char *path, int mode, int dev,
nfs_cb cb, void *private_data)
{
char *ptr;
struct mknod_cb_data *cb_data;
cb_data = malloc(sizeof(struct mknod_cb_data));
if (cb_data == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"mode buffer for cb data");
return -1;
}
ptr = strrchr(path, '/');
if (ptr) {
cb_data->path = strdup(path);
if (cb_data->path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for mknod path");
return -1;
}
ptr = strrchr(cb_data->path, '/');
*ptr = 0;
} else {
cb_data->path = malloc(strlen(path) + 2);
if (cb_data->path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for mknod path");
return -1;
}
sprintf(cb_data->path, "%c%s", '\0', path);
}
cb_data->mode = mode;
cb_data->major = major(dev);
cb_data->minor = minor(dev);
/* data->path now points to the parent directory and beyond the
* null terminator is the new node to create */
if (nfs3_lookuppath_async(nfs, cb_data->path, 0, cb, private_data,
nfs3_mknod_continue_internal,
cb_data, free_mknod_cb_data, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_unlink_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
REMOVE3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
char *str = data->continue_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
str = &str[strlen(str) + 1];
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: REMOVE of %s/%s failed with "
"%s(%d)", data->saved_path, str,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_unlink_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
char *str = data->continue_data;
struct REMOVE3args args;
str = &str[strlen(str) + 1];
args.object.dir.data.data_len = data->fh.len;
args.object.dir.data.data_val = data->fh.val;
args.object.name = str;
if (rpc_nfs3_remove_async(nfs->rpc, nfs3_unlink_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send REMOVE "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb,
void *private_data)
{
char *new_path;
char *ptr;
ptr = strrchr(path, '/');
if (ptr) {
new_path = strdup(path);
if (new_path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for unlink path");
return -1;
}
ptr = strrchr(new_path, '/');
*ptr = 0;
} else {
new_path = malloc(strlen(path) + 2);
if (new_path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for unlink path");
return -1;
}
sprintf(new_path, "%c%s", '\0', path);
}
/* new_path now points to the parent directory and beyond the
* null terminator is the object to unlink */
if (nfs3_lookuppath_async(nfs, new_path, 0, cb, private_data,
nfs3_unlink_continue_internal,
new_path, free, 0) != 0) {
return -1;
}
return 0;
}
struct create_cb_data {
char *path;
int flags;
int mode;
};
static void
free_create_cb_data(void *ptr)
{
struct create_cb_data *data = ptr;
free(data->path);
free(data);
}
static void
nfs3_create_trunc_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfsfh *nfsfh = data->nfsfh;
SETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
nfs_free_nfsfh(nfsfh);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: Setattr failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
nfs_free_nfsfh(nfsfh);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, nfsfh, data->private_data);
free_nfs_cb_data(data);
}
static void
nfs3_create_2_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
LOOKUP3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfsfh *nfsfh;
struct create_cb_data *cb_data = data->continue_data;
char *str = cb_data->path;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
str = &str[strlen(str) + 1];
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: CREATE of %s/%s failed with "
"%s(%d)", data->saved_path, str,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfsfh = malloc(sizeof(struct nfsfh));
if (nfsfh == NULL) {
nfs_set_error(nfs, "NFS: Failed to allocate nfsfh structure");
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
memset(nfsfh, 0, sizeof(struct nfsfh));
if (cb_data->flags & O_SYNC) {
nfsfh->is_sync = 1;
}
if (cb_data->flags & O_APPEND) {
nfsfh->is_append = 1;
}
/* copy the filehandle */
nfsfh->fh.len = res->LOOKUP3res_u.resok.object.data.data_len;
nfsfh->fh.val = malloc(nfsfh->fh.len);
if (nfsfh->fh.val == NULL) {
nfs_set_error(nfs, "Out of memory: Failed to allocate "
"fh structure");
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
free(nfsfh);
return;
}
memcpy(nfsfh->fh.val,
res->LOOKUP3res_u.resok.object.data.data_val,
nfsfh->fh.len);
/* Try to truncate it if we were requested to */
if (cb_data->flags & O_TRUNC) {
SETATTR3args args;
data->nfsfh = nfsfh;
memset(&args, 0, sizeof(SETATTR3args));
args.object.data.data_len = nfsfh->fh.len;
args.object.data.data_val = nfsfh->fh.val;
args.new_attributes.size.set_it = 1;
args.new_attributes.size.set_size3_u.size = 0;
if (rpc_nfs3_setattr_async(nfs->rpc, nfs3_create_trunc_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send "
"SETATTR call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
nfs_free_nfsfh(nfsfh);
return;
}
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, nfsfh, data->private_data);
free_nfs_cb_data(data);
}
static void
nfs3_create_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
CREATE3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct create_cb_data *cb_data = data->continue_data;
char *str = cb_data->path;
LOOKUP3args args;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
str = &str[strlen(str) + 1];
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: CREATE of %s/%s failed with "
"%s(%d)", data->saved_path, str,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
memset(&args, 0, sizeof(LOOKUP3args));
args.what.dir.data.data_len = data->fh.len;
args.what.dir.data.data_val = data->fh.val;
args.what.name = str;
if (rpc_nfs3_lookup_async(nfs->rpc, nfs3_create_2_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send lookup "
"call for %s/%s", data->saved_path, str);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
return;
}
static int
nfs3_create_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct create_cb_data *cb_data = data->continue_data;
char *str = cb_data->path;
CREATE3args args;
str = &str[strlen(str) + 1];
memset(&args, 0, sizeof(CREATE3args));
args.where.dir.data.data_len = data->fh.len;
args.where.dir.data.data_val = data->fh.val;
args.where.name = str;
args.how.mode = (cb_data->flags & O_EXCL) ? GUARDED : UNCHECKED;
args.how.createhow3_u.obj_attributes.mode.set_it = 1;
args.how.createhow3_u.obj_attributes.mode.set_mode3_u.mode = cb_data->mode;
if (rpc_nfs3_create_async(nfs->rpc, nfs3_create_1_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send CREATE "
"call for %s/%s", data->path, str);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_create_async(struct nfs_context *nfs, const char *path, int flags,
int mode, nfs_cb cb, void *private_data)
{
struct create_cb_data *cb_data;
char *ptr;
cb_data = malloc(sizeof(struct create_cb_data));
if (cb_data == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"mode buffer for cb data");
return -1;
}
ptr = strrchr(path, '/');
if (ptr) {
cb_data->path = strdup(path);
if (cb_data->path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for creat path");
return -1;
}
ptr = strrchr(cb_data->path, '/');
*ptr = 0;
} else {
cb_data->path = malloc(strlen(path) + 2);
if (cb_data->path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for creat path");
return -1;
}
sprintf(cb_data->path, "%c%s", '\0', path);
}
cb_data->flags = flags;
cb_data->mode = mode;
/* new_path now points to the parent directory and beyond the
* null terminator is the new object to create */
if (nfs3_lookuppath_async(nfs, cb_data->path, 0, cb, private_data,
nfs3_create_continue_internal, cb_data,
free_create_cb_data, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_rmdir_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
RMDIR3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
char *str = data->continue_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
str = &str[strlen(str) + 1];
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: RMDIR of %s/%s failed with "
"%s(%d)", data->saved_path, str,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_rmdir_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
char *str = data->continue_data;
RMDIR3args args;
str = &str[strlen(str) + 1];
args.object.dir.data.data_len = data->fh.len;
args.object.dir.data.data_val = data->fh.val;
args.object.name = str;
if (rpc_nfs3_rmdir_async(nfs->rpc, nfs3_rmdir_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send RMDIR "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb,
void *private_data)
{
char *new_path;
char *ptr;
ptr = strrchr(path, '/');
if (ptr) {
new_path = strdup(path);
if (new_path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for rmdir path");
return -1;
}
ptr = strrchr(new_path, '/');
*ptr = 0;
} else {
new_path = malloc(strlen(path) + 2);
if (new_path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for rmdir path");
return -1;
}
sprintf(new_path, "%c%s", '\0', path);
}
/* new_path now points to the parent directory and beyond the
* null terminator is the directory to remove */
if (nfs3_lookuppath_async(nfs, new_path, 0, cb, private_data,
nfs3_rmdir_continue_internal,
new_path, free, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_mkdir_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
MKDIR3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
char *str = data->continue_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
str = &str[strlen(str) + 1];
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: MKDIR of %s/%s failed "
"with %s(%d)", data->saved_path, str,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_mkdir_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
char *str = data->continue_data;
int mode = (int)data->continue_int;
MKDIR3args args;
str = &str[strlen(str) + 1];
memset(&args, 0, sizeof(MKDIR3args));
args.where.dir.data.data_len = data->fh.len;
args.where.dir.data.data_val = data->fh.val;
args.where.name = str;
args.attributes.mode.set_it = 1;
args.attributes.mode.set_mode3_u.mode = mode;
if (rpc_nfs3_mkdir_async(nfs->rpc, nfs3_mkdir_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send MKDIR "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_mkdir2_async(struct nfs_context *nfs, const char *path, int mode,
nfs_cb cb, void *private_data)
{
char *new_path;
char *ptr;
ptr = strrchr(path, '/');
if (ptr) {
new_path = strdup(path);
if (new_path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for mkdir path");
return -1;
}
ptr = strrchr(new_path, '/');
*ptr = 0;
} else {
new_path = malloc(strlen(path) + 2);
if (new_path == NULL) {
nfs_set_error(nfs, "Out of memory, failed to allocate "
"buffer for mkdir path");
return -1;
}
sprintf(new_path, "%c%s", '\0', path);
}
/* new_path now points to the parent directory and beyond the
* null terminator is the new directory to create */
if (nfs3_lookuppath_async(nfs, new_path, 0, cb, private_data,
nfs3_mkdir_continue_internal,
new_path, free, mode) != 0) {
return -1;
}
return 0;
}
static int
nfs3_truncate_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
uint64_t offset = data->continue_int;
struct nfsfh nfsfh;
memset(&nfsfh, 0, sizeof(struct nfsfh));
nfsfh.fh = data->fh;
if (nfs_ftruncate_async(nfs, &nfsfh, offset, data->cb,
data->private_data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send SETATTR "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
free_nfs_cb_data(data);
return 0;
}
int
nfs3_truncate_async(struct nfs_context *nfs, const char *path, uint64_t length,
nfs_cb cb, void *private_data)
{
uint64_t offset;
offset = length;
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_truncate_continue_internal,
NULL, NULL, offset) != 0) {
return -1;
}
return 0;
}
static void
nfs3_ftruncate_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
SETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: Setattr failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfs_dircache_drop(nfs, &data->fh);
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
int
nfs3_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh,
uint64_t length, nfs_cb cb, void *private_data)
{
struct nfs_cb_data *data;
SETATTR3args args;
nfs_pagecache_invalidate(nfs, nfsfh);
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
memset(&args, 0, sizeof(SETATTR3args));
args.object.data.data_len = nfsfh->fh.len;
args.object.data.data_val = nfsfh->fh.val;
args.new_attributes.size.set_it = 1;
args.new_attributes.size.set_size3_u.size = length;
if (rpc_nfs3_setattr_async(nfs->rpc, nfs3_ftruncate_cb,
&args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send SETATTR "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static void
nfs3_fsync_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
COMMIT3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: Commit failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
int
nfs3_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb,
void *private_data)
{
struct nfs_cb_data *data;
struct COMMIT3args args;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
args.file.data.data_len = nfsfh->fh.len;
args.file.data.data_val = nfsfh->fh.val;
args.offset = 0;
args.count = 0;
if (rpc_nfs3_commit_async(nfs->rpc, nfs3_fsync_cb, &args, data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send COMMIT "
"call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static void
nfs3_getacl_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
GETACL3res *res;
GETACL3resok *resok;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
fattr3_acl acl;
int i;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: GETACL of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
memset(&acl, 0, sizeof(acl));
resok = &res->GETACL3res_u.resok;
acl.ace_count = resok->ace_count;
if (acl.ace_count) {
acl.ace = calloc(acl.ace_count, sizeof(struct nfsacl_ace));
if (acl.ace == NULL) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
for (i = 0; i < acl.ace_count; i++) {
acl.ace[i] = resok->ace.ace_val[i];
}
}
acl.default_ace_count = resok->default_ace_count;
if (acl.default_ace_count) {
acl.default_ace = calloc(acl.default_ace_count, sizeof(struct nfsacl_ace));
if (acl.default_ace == NULL) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
for (i = 0; i < acl.default_ace_count; i++) {
acl.default_ace[i] = resok->default_ace.default_ace_val[i];
}
}
data->cb(0, nfs, &acl, data->private_data);
free_nfs_cb_data(data);
}
int
nfs3_getacl_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb,
void *private_data)
{
struct nfs_cb_data *data;
GETACL3args args;
printf("getacl async\n");
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
memset(&args, 0, sizeof(GETACL3args));
args.dir.data.data_len = nfsfh->fh.len;
args.dir.data.data_val = nfsfh->fh.val;
args.mask = NFSACL_MASK_ACL_ENTRY|NFSACL_MASK_ACL_COUNT|NFSACL_MASK_ACL_DEFAULT_ENTRY|NFSACL_MASK_ACL_DEFAULT_COUNT;
if (rpc_nfsacl_getacl_async(nfs->rpc, nfs3_getacl_cb, &args, data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static void
nfs3_stat_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
GETATTR3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
#ifdef WIN32
struct __stat64 st;
#else
struct stat st;
#endif
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: GETATTR of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
st.st_dev = (dev_t)res->GETATTR3res_u.resok.obj_attributes.fsid;
st.st_ino = (ino_t)res->GETATTR3res_u.resok.obj_attributes.fileid;
st.st_mode = res->GETATTR3res_u.resok.obj_attributes.mode;
switch (res->GETATTR3res_u.resok.obj_attributes.type) {
case NF3REG:
st.st_mode |= S_IFREG;
break;
case NF3DIR:
st.st_mode |= S_IFDIR;
break;
case NF3BLK:
st.st_mode |= S_IFBLK;
break;
case NF3CHR:
st.st_mode |= S_IFCHR;
break;
case NF3LNK:
st.st_mode |= S_IFLNK;
break;
case NF3SOCK:
st.st_mode |= S_IFSOCK;
break;
case NF3FIFO:
st.st_mode |= S_IFIFO;
break;
}
st.st_nlink = res->GETATTR3res_u.resok.obj_attributes.nlink;
st.st_uid = res->GETATTR3res_u.resok.obj_attributes.uid;
st.st_gid = res->GETATTR3res_u.resok.obj_attributes.gid;
st.st_rdev = specdata3_to_rdev(&res->GETATTR3res_u.resok.obj_attributes.rdev);
st.st_size = res->GETATTR3res_u.resok.obj_attributes.size;
#ifndef WIN32
st.st_blksize = NFS_BLKSIZE;
st.st_blocks = (res->GETATTR3res_u.resok.obj_attributes.used + 512 - 1) / 512;
#endif//WIN32
st.st_atime = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
st.st_mtime = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
st.st_ctime = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
#ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
st.st_atim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.atime.nseconds;
st.st_mtim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.mtime.nseconds;
st.st_ctim.tv_nsec = res->GETATTR3res_u.resok.obj_attributes.ctime.nseconds;
#endif
data->cb(0, nfs, &st, data->private_data);
free_nfs_cb_data(data);
}
int
nfs3_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb,
void *private_data)
{
struct nfs_cb_data *data;
struct GETATTR3args args;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = nfsfh->fh.len;
args.object.data.data_val = nfsfh->fh.val;
if (rpc_nfs3_getattr_async(nfs->rpc, nfs3_stat_1_cb, &args,
data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static void
nfs3_stat64_1_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
GETATTR3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfs_stat_64 st;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: GETATTR of %s failed with "
"%s(%d)", data->saved_path,
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
st.nfs_dev = res->GETATTR3res_u.resok.obj_attributes.fsid;
st.nfs_ino = res->GETATTR3res_u.resok.obj_attributes.fileid;
st.nfs_mode = res->GETATTR3res_u.resok.obj_attributes.mode;
switch (res->GETATTR3res_u.resok.obj_attributes.type) {
case NF3REG:
st.nfs_mode |= S_IFREG;
break;
case NF3DIR:
st.nfs_mode |= S_IFDIR;
break;
case NF3BLK:
st.nfs_mode |= S_IFBLK;
break;
case NF3CHR:
st.nfs_mode |= S_IFCHR;
break;
case NF3LNK:
st.nfs_mode |= S_IFLNK;
break;
case NF3SOCK:
st.nfs_mode |= S_IFSOCK;
break;
case NF3FIFO:
st.nfs_mode |= S_IFIFO;
break;
}
st.nfs_nlink = res->GETATTR3res_u.resok.obj_attributes.nlink;
st.nfs_uid = res->GETATTR3res_u.resok.obj_attributes.uid;
st.nfs_gid = res->GETATTR3res_u.resok.obj_attributes.gid;
st.nfs_rdev = specdata3_to_rdev(&res->GETATTR3res_u.resok.obj_attributes.rdev);
st.nfs_size = res->GETATTR3res_u.resok.obj_attributes.size;
st.nfs_blksize = NFS_BLKSIZE;
st.nfs_blocks = (res->GETATTR3res_u.resok.obj_attributes.used + 512 - 1) / 512;
st.nfs_atime = res->GETATTR3res_u.resok.obj_attributes.atime.seconds;
st.nfs_mtime = res->GETATTR3res_u.resok.obj_attributes.mtime.seconds;
st.nfs_ctime = res->GETATTR3res_u.resok.obj_attributes.ctime.seconds;
st.nfs_atime_nsec = res->GETATTR3res_u.resok.obj_attributes.atime.nseconds;
st.nfs_mtime_nsec = res->GETATTR3res_u.resok.obj_attributes.mtime.nseconds;
st.nfs_ctime_nsec = res->GETATTR3res_u.resok.obj_attributes.ctime.nseconds;
st.nfs_used = res->GETATTR3res_u.resok.obj_attributes.used;
data->cb(0, nfs, &st, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_stat64_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct GETATTR3args args;
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
if (rpc_nfs3_getattr_async(nfs->rpc, nfs3_stat64_1_cb,
&args, data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_stat64_async(struct nfs_context *nfs, const char *path,
int no_follow, nfs_cb cb, void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, no_follow, cb, private_data,
nfs3_stat64_continue_internal,
NULL, NULL, 0) != 0) {
return -1;
}
return 0;
}
int
nfs3_fstat64_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb,
void *private_data)
{
struct nfs_cb_data *data;
struct GETATTR3args args;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = nfsfh->fh.len;
args.object.data.data_val = nfsfh->fh.val;
if (rpc_nfs3_getattr_async(nfs->rpc, nfs3_stat64_1_cb, &args,
data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
static int
nfs3_stat_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
struct GETATTR3args args;
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
if (rpc_nfs3_getattr_async(nfs->rpc, nfs3_stat_1_cb, &args,
data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
int
nfs3_stat_async(struct nfs_context *nfs, const char *path,
nfs_cb cb, void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_stat_continue_internal,
NULL, NULL, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_close_cb(int err, struct nfs_context *nfs, void *ret_data,
void *private_data) {
struct nfs_cb_data *data = private_data;
nfs_free_nfsfh(data->nfsfh);
data->cb(err, nfs, ret_data, data->private_data);
free_nfs_cb_data(data);
}
int
nfs3_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb,
void *private_data)
{
struct nfs_cb_data *data;
if (!nfsfh->is_dirty) {
nfs_free_nfsfh(nfsfh);
cb(0, nfs, NULL, private_data);
return 0;
}
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfsfh = nfsfh;
data->cb = cb;
data->private_data = private_data;
return nfs_fsync_async(nfs, nfsfh, nfs3_close_cb, data);
}
static void
nfs3_write_append_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
GETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: GETATTR failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
if (nfs3_pwrite_async_internal(nfs, data->nfsfh, res->GETATTR3res_u.resok.obj_attributes.size, data->count, data->usrbuf, data->cb, data->private_data, 1) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
free_nfs_cb_data(data);
}
static void
nfs3_fill_WRITE3args (WRITE3args *args, struct nfsfh *fh, uint64_t offset,
uint64_t count, const void *buf)
{
memset(args, 0, sizeof(WRITE3args));
args->file.data.data_len = fh->fh.len;
args->file.data.data_val = fh->fh.val;
args->offset = offset;
args->count = (count3)count;
args->stable = fh->is_sync ? FILE_SYNC : UNSTABLE;
args->data.data_len = (count3)count;
args->data.data_val = (char *)buf;
}
static void
nfs3_pwrite_mcb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_mcb_data *mdata = private_data;
struct nfs_cb_data *data = mdata->data;
struct nfs_context *nfs = data->nfs;
WRITE3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
data->num_calls--;
/* Flag the failure but do not invoke callback until we have
* received all responses.
*/
if (status == RPC_STATUS_ERROR) {
data->error = 1;
}
if (status == RPC_STATUS_CANCEL) {
data->cancel = 1;
}
if (status == RPC_STATUS_TIMEOUT) {
data->cancel = 1;
}
if (status == RPC_STATUS_SUCCESS) {
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
data->error = 1;
} else {
size_t count = res->WRITE3res_u.resok.count;
if (count < mdata->count) {
if (count == 0) {
nfs_set_error(nfs, "NFS: Write failed. No bytes written!");
data->error = 1;
} else {
/* reissue reminder of this write request */
WRITE3args args;
mdata->offset += count;
mdata->count -= count;
nfs3_fill_WRITE3args(&args,
data->nfsfh,
mdata->offset,
mdata->count,
&data->usrbuf[mdata->offset - data->offset]);
if (rpc_nfs3_write_async(nfs->rpc,
nfs3_pwrite_mcb,
&args, mdata) == 0) {
data->num_calls++;
return;
} else {
nfs_set_error(nfs, "RPC error: Failed to send WRITE call for %s", data->path);
data->oom = 1;
}
}
}
if (count > 0) {
if (data->max_offset < mdata->offset + count) {
data->max_offset = mdata->offset + count;
}
}
}
}
free(mdata);
if (data->num_calls > 0) {
/* still waiting for more replies */
return;
}
if (data->oom != 0) {
data->cb(-ENOMEM, nfs, command_data, data->private_data);
free_nfs_cb_data(data);
return;
}
if (data->error != 0) {
data->cb(-EFAULT, nfs, command_data, data->private_data);
free_nfs_cb_data(data);
return;
}
if (data->cancel != 0) {
data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
free_nfs_cb_data(data);
return;
}
if (data->update_pos) {
data->nfsfh->offset = data->max_offset;
}
nfs_pagecache_put(&data->nfsfh->pagecache, data->offset, data->usrbuf, data->count);
data->cb((int)(data->max_offset - data->offset), nfs, NULL, data->private_data);
free_nfs_cb_data(data);
}
int
nfs3_pwrite_async_internal(struct nfs_context *nfs, struct nfsfh *nfsfh,
uint64_t offset, size_t count, const char *buf,
nfs_cb cb, void *private_data, int update_pos)
{
struct nfs_cb_data *data;
nfsfh->is_dirty = 1;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
data->nfsfh = nfsfh;
data->usrbuf = buf;
data->update_pos = update_pos;
/* hello, clang-analyzer */
assert(data->num_calls == 0);
/* chop requests into chunks of at most WRITEMAX bytes if necessary.
* we send all writes in parallel so that performance is still good.
*/
data->max_offset = offset;
data->offset = offset;
data->count = count;
do {
size_t writecount = count;
struct nfs_mcb_data *mdata;
WRITE3args args;
if (writecount > nfs_get_writemax(nfs)) {
writecount = (size_t)nfs_get_writemax(nfs);
}
mdata = malloc(sizeof(struct nfs_mcb_data));
if (mdata == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_mcb_data structure");
if (data->num_calls == 0) {
free_nfs_cb_data(data);
return -1;
}
data->oom = 1;
break;
}
memset(mdata, 0, sizeof(struct nfs_mcb_data));
mdata->data = data;
mdata->offset = offset;
mdata->count = writecount;
nfs3_fill_WRITE3args(&args, nfsfh, offset, writecount,
&buf[offset - data->offset]);
if (rpc_nfs3_write_async(nfs->rpc, nfs3_pwrite_mcb,
&args, mdata) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send WRITE "
"call for %s", data->path);
free(mdata);
if (data->num_calls == 0) {
free_nfs_cb_data(data);
return -1;
}
data->oom = 1;
break;
}
count -= writecount;
offset += writecount;
data->num_calls++;
} while (count > 0);
return 0;
}
int
nfs3_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, uint64_t count,
const void *buf, nfs_cb cb, void *private_data)
{
if (nfsfh->is_append) {
struct GETATTR3args args;
struct nfs_cb_data *data;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "Out of memory.");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
data->nfsfh = nfsfh;
data->usrbuf = buf;
data->count = (size_t)count;
memset(&args, 0, sizeof(GETATTR3args));
args.object.data.data_len = nfsfh->fh.len;
args.object.data.data_val = nfsfh->fh.val;
if (rpc_nfs3_getattr_async(nfs->rpc, nfs3_write_append_cb,
&args, data) != 0) {
free_nfs_cb_data(data);
return -1;
}
return 0;
}
return nfs3_pwrite_async_internal(nfs, nfsfh, nfsfh->offset,
(size_t)count, buf,
cb, private_data, 1);
}
static void
nfs3_fill_READ3args(READ3args *args, struct nfsfh *fh, uint64_t offset,
uint64_t count)
{
memset(args, 0, sizeof(READ3args));
args->file.data.data_len = fh->fh.len;
args->file.data.data_val = fh->fh.val;
args->offset = offset;
args->count = (count3)count;
}
static void
nfs3_pread_mcb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_mcb_data *mdata = private_data;
struct nfs_cb_data *data = mdata->data;
struct nfs_context *nfs = data->nfs;
READ3res *res;
int cb_err;
void *cb_data;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
data->num_calls--;
/* Flag the failure but do not invoke callback until we have
* received all responses.
*/
if (status == RPC_STATUS_ERROR) {
data->error = 1;
}
if (status == RPC_STATUS_CANCEL) {
data->cancel = 1;
}
if (status == RPC_STATUS_TIMEOUT) {
data->cancel = 1;
}
if (status == RPC_STATUS_SUCCESS) {
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: Read failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->error = 1;
} else {
size_t count = res->READ3res_u.resok.count;
if (count < data->count && data->buffer == NULL) {
/* we need a reassembly buffer after all */
data->buffer = malloc(mdata->count);
if (data->buffer == NULL) {
data->oom = 1;
goto out;
}
}
if (count > 0) {
if (count == data->count && data->buffer == NULL) {
data->buffer = res->READ3res_u.resok.data.data_val;
data->not_my_buffer = 1;
} else if (count <= mdata->count) {
if (data->buffer == NULL) {
data->buffer = malloc(data->org_count);
if (data->buffer == NULL) {
data->oom = 1;
goto out;
}
}
/* copy data into reassembly buffer */
memcpy(&data->buffer[mdata->offset - data->offset], res->READ3res_u.resok.data.data_val, count);
} else {
nfs_set_error(nfs, "NFS: Read overflow. Server has sent more data than requested!");
data->error = 1;
goto out;
}
if (data->max_offset < mdata->offset + count) {
data->max_offset = mdata->offset + count;
}
}
/* check if we have received a short read */
if (count < mdata->count && !res->READ3res_u.resok.eof) {
if (count == 0) {
nfs_set_error(nfs, "NFS: Read failed. No bytes read and not at EOF!");
data->error = 1;
} else {
/* reissue reminder of this read request */
READ3args args;
mdata->offset += count;
mdata->count -= count;
nfs3_fill_READ3args(&args, data->nfsfh,
mdata->offset,
mdata->count);
if (rpc_nfs3_read_async(nfs->rpc,
nfs3_pread_mcb,
&args, mdata)
== 0) {
data->num_calls++;
return;
} else {
nfs_set_error(nfs, "RPC error: Failed to send READ call for %s", data->path);
data->oom = 1;
}
}
}
}
}
out:
free(mdata);
if (data->num_calls > 0) {
/* still waiting for more replies */
return;
}
if (data->oom != 0) {
data->cb(-ENOMEM, nfs, command_data, data->private_data);
free_nfs_cb_data(data);
return;
}
if (data->error != 0) {
data->cb(-EFAULT, nfs, command_data, data->private_data);
free_nfs_cb_data(data);
return;
}
if (data->cancel != 0) {
data->cb(-EINTR, nfs, "Command was cancelled",
data->private_data);
free_nfs_cb_data(data);
return;
}
data->nfsfh->ra.fh_offset = data->max_offset;
nfs_pagecache_put(&data->nfsfh->pagecache, data->offset, data->buffer,
(size_t)(data->max_offset - data->offset));
if (data->max_offset > data->org_offset + data->org_count) {
data->max_offset = data->org_offset + data->org_count;
}
if (data->update_pos) {
data->nfsfh->offset = data->max_offset;
}
cb_err = (int)(data->max_offset - data->org_offset);
cb_data = data->buffer + (data->org_offset - data->offset);
data->cb(cb_err, nfs, cb_data, data->private_data);
free_nfs_cb_data(data);
return;
}
int
nfs3_pread_async_internal(struct nfs_context *nfs, struct nfsfh *nfsfh,
uint64_t offset, size_t count, nfs_cb cb,
void *private_data, int update_pos)
{
struct nfs_cb_data *data;
data = malloc(sizeof(struct nfs_cb_data));
if (data == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate "
"nfs_cb_data structure");
return -1;
}
memset(data, 0, sizeof(struct nfs_cb_data));
data->nfs = nfs;
data->cb = cb;
data->private_data = private_data;
data->nfsfh = nfsfh;
data->org_offset = offset;
data->org_count = count;
data->update_pos = update_pos;
assert(data->num_calls == 0);
if (nfsfh->pagecache.num_entries) {
/* align start offset to blocksize */
count += offset & (NFS_BLKSIZE - 1);
offset &= ~(NFS_BLKSIZE - 1);
/* align end offset to blocksize */
count += NFS_BLKSIZE - 1 ;
count &= ~(NFS_BLKSIZE - 1);
}
data->offset = offset;
data->count = (count3)count;
if (nfsfh->pagecache.num_entries) {
while (count > 0) {
char *cdata = nfs_pagecache_get(&nfsfh->pagecache,
offset);
if (!cdata) {
break;
}
/* we copy data from the pagecache so we need a
* reassembly buffer */
if (data->buffer == NULL) {
data->buffer = malloc(data->count);
if (data->buffer == NULL) {
free_nfs_cb_data(data);
return -ENOMEM;
}
}
memcpy(data->buffer + offset - data->offset, cdata,
NFS_BLKSIZE);
offset += NFS_BLKSIZE;
count -= NFS_BLKSIZE;
}
if (!count) {
data->nfsfh->ra.fh_offset = data->offset + data->count;
if (update_pos) {
data->nfsfh->offset = data->org_offset + data->org_count;
}
data->cb(data->org_count, nfs, data->buffer + (data->org_offset - data->offset), data->private_data);
free_nfs_cb_data(data);
return 0;
}
}
if (nfs->rpc->readahead) {
nfsfh->ra.cur_ra = MAX(NFS_BLKSIZE, nfsfh->ra.cur_ra);
if (offset >= nfsfh->ra.fh_offset &&
offset <= nfsfh->ra.fh_offset + nfsfh->ra.cur_ra + NFS_BLKSIZE) {
if (nfs->rpc->readahead > nfsfh->ra.cur_ra) {
nfsfh->ra.cur_ra <<= 1;
}
} else {
nfsfh->ra.cur_ra = 0;
}
count += nfsfh->ra.cur_ra;
data->count += nfsfh->ra.cur_ra;
}
if ((data->count > nfs_get_readmax(nfs) || data->count > data->org_count) &&
(data->buffer == NULL || nfsfh->ra.cur_ra > 0)) {
/* we do readahead, a big read or aligned out the request so we
* need a (bigger) reassembly buffer */
data->buffer = realloc(data->buffer, data->count + nfsfh->ra.cur_ra);
if (data->buffer == NULL) {
free_nfs_cb_data(data);
return -ENOMEM;
}
}
data->max_offset = data->offset;
/* chop requests into chunks of at most READMAX bytes if necessary.
* we send all reads in parallel so that performance is still good.
*/
do {
size_t readcount = count;
struct nfs_mcb_data *mdata;
READ3args args;
if (readcount > nfs_get_readmax(nfs)) {
readcount = (size_t)nfs_get_readmax(nfs);
}
mdata = malloc(sizeof(struct nfs_mcb_data));
if (mdata == NULL) {
nfs_set_error(nfs, "out of memory: failed to allocate nfs_mcb_data structure");
if (data->num_calls == 0) {
free_nfs_cb_data(data);
return -1;
}
data->oom = 1;
break;
}
memset(mdata, 0, sizeof(struct nfs_mcb_data));
mdata->data = data;
mdata->offset = offset;
mdata->count = readcount;
nfs3_fill_READ3args(&args, nfsfh, offset, readcount);
if (rpc_nfs3_read_async(nfs->rpc, nfs3_pread_mcb,
&args, mdata) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send READ "
"call for %s", data->path);
free(mdata);
if (data->num_calls == 0) {
free_nfs_cb_data(data);
return -1;
}
data->oom = 1;
break;
}
count -= readcount;
offset += readcount;
data->num_calls++;
} while (count > 0);
return 0;
}
static int
nfs3_chdir_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
/* steal saved_path */
#ifdef HAVE_MULTITHREADING
nfs_mt_mutex_lock(&nfs->rpc->rpc_mutex);
#endif
free(nfs->nfsi->cwd);
nfs->nfsi->cwd = data->saved_path;
#ifdef HAVE_MULTITHREADING
nfs_mt_mutex_unlock(&nfs->rpc->rpc_mutex);
#endif
data->saved_path = NULL;
data->cb(0, nfs, NULL, data->private_data);
free_nfs_cb_data(data);
return 0;
}
int
nfs3_chdir_async(struct nfs_context *nfs, const char *path,
nfs_cb cb, void *private_data)
{
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_chdir_continue_internal,
NULL, NULL, 0) != 0) {
return -1;
}
return 0;
}
static void
nfs3_open_trunc_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfsfh *nfsfh;
SETATTR3res *res;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: Setattr failed with %s(%d)",
nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
nfsfh = malloc(sizeof(struct nfsfh));
if (nfsfh == NULL) {
nfs_set_error(nfs, "NFS: Failed to allocate nfsfh "
"structure");
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
memset(nfsfh, 0, sizeof(struct nfsfh));
if (data->continue_int & O_SYNC) {
nfsfh->is_sync = 1;
}
if (data->continue_int & O_APPEND) {
nfsfh->is_append = 1;
}
/* steal the filehandle */
nfsfh->fh = data->fh;
data->fh.val = NULL;
data->cb(0, nfs, nfsfh, data->private_data);
free_nfs_cb_data(data);
}
static void
nfs3_open_cb(struct rpc_context *rpc, int status, void *command_data,
void *private_data)
{
ACCESS3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
struct nfsfh *nfsfh;
unsigned int nfsmode = 0;
assert(rpc->magic == RPC_CONTEXT_MAGIC);
if (check_nfs3_error(nfs, status, data, command_data)) {
free_nfs_cb_data(data);
return;
}
res = command_data;
if (res->status != NFS3_OK) {
nfs_set_error(nfs, "NFS: ACCESS of %s failed with %s(%d)",
data->saved_path, nfsstat3_to_str(res->status),
nfsstat3_to_errno(res->status));
data->cb(nfsstat3_to_errno(res->status), nfs,
nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
if (data->continue_int & O_WRONLY) {
nfsmode |= ACCESS3_MODIFY;
}
if (data->continue_int & O_RDWR) {
nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
}
if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
nfsmode |= ACCESS3_READ;
}
if (res->ACCESS3res_u.resok.access != nfsmode) {
nfs_set_error(nfs, "NFS: ACCESS denied. Required "
"access %c%c%c. Allowed access %c%c%c",
nfsmode&ACCESS3_READ?'r':'-',
nfsmode&ACCESS3_MODIFY?'w':'-',
nfsmode&ACCESS3_EXECUTE?'x':'-',
res->ACCESS3res_u.resok.access&ACCESS3_READ ? 'r':'-',
res->ACCESS3res_u.resok.access&ACCESS3_MODIFY ?'w':'-',
res->ACCESS3res_u.resok.access&ACCESS3_EXECUTE ?'x':'-');
data->cb(-EACCES, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
/* Try to truncate it if we were requested to */
if ((data->continue_int & O_TRUNC) &&
(data->continue_int & (O_RDWR|O_WRONLY))) {
SETATTR3args args;
memset(&args, 0, sizeof(SETATTR3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
args.new_attributes.size.set_it = 1;
args.new_attributes.size.set_size3_u.size = 0;
if (rpc_nfs3_setattr_async(nfs->rpc, nfs3_open_trunc_cb, &args,
data) != 0) {
nfs_set_error(nfs, "RPC error: Failed to send "
"SETATTR call for %s", data->path);
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return;
}
return;
}
nfsfh = malloc(sizeof(struct nfsfh));
if (nfsfh == NULL) {
nfs_set_error(nfs, "NFS: Failed to allocate nfsfh structure");
data->cb(-ENOMEM, nfs, nfs_get_error(nfs), data->private_data);
free_nfs_cb_data(data);
return;
}
memset(nfsfh, 0, sizeof(struct nfsfh));
if (data->continue_int & O_SYNC) {
nfsfh->is_sync = 1;
}
if (data->continue_int & O_APPEND) {
nfsfh->is_append = 1;
}
/* init the pagecache */
nfs_pagecache_init(nfs, nfsfh);
/* steal the filehandle */
nfsfh->fh = data->fh;
data->fh.val = NULL;
data->cb(0, nfs, nfsfh, data->private_data);
free_nfs_cb_data(data);
}
static int
nfs3_open_continue_internal(struct nfs_context *nfs,
struct nfs_attr *attr _U_,
struct nfs_cb_data *data)
{
int nfsmode = 0;
ACCESS3args args;
if (data->continue_int & O_WRONLY) {
nfsmode |= ACCESS3_MODIFY;
}
if (data->continue_int & O_RDWR) {
nfsmode |= ACCESS3_READ|ACCESS3_MODIFY;
}
if (!(data->continue_int & (O_WRONLY|O_RDWR))) {
nfsmode |= ACCESS3_READ;
}
memset(&args, 0, sizeof(ACCESS3args));
args.object.data.data_len = data->fh.len;
args.object.data.data_val = data->fh.val;
args.access = nfsmode;
if (rpc_nfs3_access_async(nfs->rpc, nfs3_open_cb, &args, data) != 0) {
data->cb(-ENOMEM, nfs, nfs_get_error(nfs),
data->private_data);
free_nfs_cb_data(data);
return -1;
}
return 0;
}
/* TODO add the plumbing for mode */
int
nfs3_open_async(struct nfs_context *nfs, const char *path, int flags,
int mode, nfs_cb cb, void *private_data)
{
if (flags & O_CREAT) {
return nfs3_create_async(nfs, path, flags, mode,
cb, private_data);
}
if (nfs3_lookuppath_async(nfs, path, 0, cb, private_data,
nfs3_open_continue_internal,
NULL, NULL, flags) != 0) {
return -1;
}
return 0;
}
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