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add uid and gid URL param to specify alternate uid and/or gid 

This allows to connect with an alternate uid or gid than that
of the current user.

Example:
 examples/nfs-ls nfs://10.0.0.1/export?uid=1000&gid=33

Signed-off-by: Peter Lieven <pl@kamp.de>
libnfs-4.0.0-vitalif
Peter Lieven 2013-12-23 13:35:31 +01:00
parent 1c8b4547ce
commit 9126c9c036
4 changed files with 33 additions and 1 deletions
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4
include/libnfs-private.h
View File

@ -97,6 +97,8 @@ struct rpc_context {
/* parameters passable via URL */
int tcp_syncnt;
int uid;
int gid;
};
struct rpc_pdu {
@ -140,6 +142,8 @@ void rpc_set_autoreconnect(struct rpc_context *rpc);
void rpc_unset_autoreconnect(struct rpc_context *rpc);
void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v);
void rpc_set_uid(struct rpc_context *rpc, int uid);
void rpc_set_gid(struct rpc_context *rpc, int gid);
int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size);
void rpc_free_all_fragments(struct rpc_context *rpc);

1
include/nfsc/libnfs.h
View File

@ -77,7 +77,6 @@ EXTERN int nfs_queue_length(struct nfs_context *nfs);
struct AUTH;
EXTERN void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth);
/*
* When an operation failed, this function can extract a detailed error string.
*/

25
lib/init.c
View File

@ -74,6 +74,13 @@ struct rpc_context *rpc_init_context(void)
salt += 0x01000000;
rpc->fd = -1;
rpc->tcp_syncnt = RPC_PARAM_UNDEFINED;
#ifdef WIN32
rpc->uid = 65534;
rpc->gid = 65534;
#else
rpc->uid = getuid();
rpc->gid = getgid();
#endif
return rpc;
}
@ -101,6 +108,24 @@ void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
rpc->auth = auth;
}
static void rpc_set_uid_gid(struct rpc_context *rpc, int uid, int gid) {
if (uid != rpc->uid || gid != rpc->gid) {
struct AUTH *auth = libnfs_authunix_create("libnfs", uid, gid, 0, NULL);
if (auth != NULL) {
rpc_set_auth(rpc, auth);
rpc->uid = uid;
rpc->gid = gid;
}
}
}
void rpc_set_uid(struct rpc_context *rpc, int uid) {
rpc_set_uid_gid(rpc, uid, rpc->gid);
}
void rpc_set_gid(struct rpc_context *rpc, int gid) {
rpc_set_uid_gid(rpc, rpc->uid, gid);
}
void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
{

4
lib/libnfs.c
View File

@ -282,6 +282,10 @@ flags:
strp2++;
if (!strncmp(strp, "tcp-syncnt", 10)) {
rpc_set_tcp_syncnt(nfs->rpc, atoi(strp2));
} else if (!strncmp(strp, "uid", 3)) {
rpc_set_uid(nfs->rpc, atoi(strp2));
} else if (!strncmp(strp, "gid", 3)) {
rpc_set_gid(nfs->rpc, atoi(strp2));
}
}
}