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libshare: nfs: share nfs_copy_entries()

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Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12067
This commit is contained in:
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2021-05-17 19:56:48 +02:00
committed by Brian Behlendorf
parent c53f2e9b50
commit 4e225e7316
4 changed files with 52 additions and 128 deletions
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lib/libshare/os/linux/nfs.c
-54
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@@ -419,60 +419,6 @@ nfs_add_entry(FILE *tmpfile, const char *sharepath,
return (SA_OK);
}
/*
* This function copies all entries from the exports file to newfp,
* omitting any entries for the specified mountpoint.
*/
int
nfs_copy_entries(FILE *newfp, const char *mountpoint)
{
char *buf = NULL;
size_t buflen = 0;
int error = SA_OK;
FILE *oldfp = fopen(ZFS_EXPORTS_FILE, "re");
fputs(FILE_HEADER, newfp);
/*
* The ZFS_EXPORTS_FILE may not exist yet. If that's the
* case then just write out the new file.
*/
if (oldfp != NULL) {
while (getline(&buf, &buflen, oldfp) != -1) {
char *space = NULL;
if (buf[0] == '\n' || buf[0] == '#')
continue;
if ((space = strchr(buf, ' ')) != NULL) {
int mountpoint_len = strlen(mountpoint);
if (space - buf == mountpoint_len &&
strncmp(mountpoint, buf,
mountpoint_len) == 0) {
continue;
}
}
fputs(buf, newfp);
}
if (ferror(oldfp) != 0) {
error = ferror(oldfp);
}
if (fclose(oldfp) != 0) {
fprintf(stderr, "Unable to close file %s: %s\n",
ZFS_EXPORTS_FILE, strerror(errno));
error = error != 0 ? error : SA_SYSTEM_ERR;
}
}
if (error == SA_OK && ferror(newfp) != 0)
error = ferror(newfp);
free(buf);
return (error);
}
/*
* Enables NFS sharing for the specified share.
*/