vitalif
/
libnfs
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

nfs_readlink2: Return symlink without incurring ENAMETOOLONG 

Signed-off-by: Earl Chew <earl_chew@yahoo.com>
libnfs-4.0.0-vitalif
Earl Chew 2017-05-05 07:57:28 -07:00
parent 2edbd14779
commit 1af36b4c77
2 changed files with 50 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/nfsc/libnfs.h
View File

@ -1091,6 +1091,16 @@ EXTERN int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb
*/
EXTERN int nfs_readlink(struct nfs_context *nfs, const char *path, char *buf, int bufsize);
/*
* Sync readlink2(<name>)
* Function returns
* NULL : The command failed.
* buf : The content of the link. The returned buffer must be freed
* by the caller.
*/
EXTERN char *nfs_readlink2(struct nfs_context *nfs, const char *path);
/*

40
lib/libnfs-sync.c
View File

@ -1003,6 +1003,46 @@ int nfs_readlink(struct nfs_context *nfs, const char *path, char *buf, int bufsi
return cb_data.status;
}
static void readlink2_cb(int status, struct nfs_context *nfs, void *data, void *private_data)
{
struct sync_cb_data *cb_data = private_data;
char **bufptr;
char *buf;
cb_data->is_finished = 1;
if (status < 0) {
nfs_set_error(nfs, "readlink call failed with \"%s\"", (char *)data);
return;
}
buf = strdup(data);
if (buf == NULL)
return;
bufptr = cb_data->return_data;
*bufptr = buf;
}
char *nfs_readlink2(struct nfs_context *nfs, const char *path)
{
char *buf;
struct sync_cb_data cb_data;
buf = NULL;
cb_data.is_finished = 0;
cb_data.return_data = &buf;
if (nfs_readlink_async(nfs, path, readlink2_cb, &cb_data) != 0) {
nfs_set_error(nfs, "nfs_readlink_async failed");
return NULL;
}
wait_for_nfs_reply(nfs, &cb_data);
return buf;
}
/*