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Allow bookmark short name in 'zfs bookmark'

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This lets users create a bookmark from the command line by its name
only, without the need to specify the dataset path which is extacted
from the snapshot parameter.

These commands are now equivalent:

   zfs bookmark poolname/fs@snap poolname/fs#bookmark
   zfs bookmark @snap poolname/fs#bookmark
   zfs bookmark poolname/fs@snap \#bookmark

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #3665 
Closes #6027
This commit is contained in:
LOLi 2017-04-20 21:09:40 +02:00 committed by Brian Behlendorf
parent 3e67c38c34
commit 587e228a6f
1 changed files with 19 additions and 3 deletions
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22
cmd/zfs/zfs_main.c
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@ -6864,6 +6864,7 @@ static int
zfs_do_bookmark(int argc, char **argv)
{
char snapname[ZFS_MAX_DATASET_NAME_LEN];
char bookname[ZFS_MAX_DATASET_NAME_LEN];
zfs_handle_t *zhp;
nvlist_t *nvl;
int ret = 0;
@ -6894,7 +6895,7 @@ zfs_do_bookmark(int argc, char **argv)
if (strchr(argv[1], '#') == NULL) {
(void) fprintf(stderr,
gettext("invalid bookmark name '%s' -- "
gettext("invalid bookmark name '%s': "
"must contain a '#'\n"), argv[1]);
goto usage;
}
@ -6910,6 +6911,18 @@ zfs_do_bookmark(int argc, char **argv)
} else {
(void) strlcpy(snapname, argv[0], sizeof (snapname));
}
if (argv[1][0] == '#') {
/*
* Bookmark name begins with #.
* Default to same fs as snapshot.
*/
(void) strlcpy(bookname, argv[0], sizeof (bookname));
*strchr(bookname, '@') = '\0';
(void) strlcat(bookname, argv[1], sizeof (bookname));
} else {
(void) strlcpy(bookname, argv[1], sizeof (bookname));
}
zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
if (zhp == NULL)
goto usage;
@ -6917,7 +6930,7 @@ zfs_do_bookmark(int argc, char **argv)
nvl = fnvlist_alloc();
fnvlist_add_string(nvl, argv[1], snapname);
fnvlist_add_string(nvl, bookname, snapname);
ret = lzc_bookmark(nvl, NULL);
fnvlist_free(nvl);
@ -6927,7 +6940,7 @@ zfs_do_bookmark(int argc, char **argv)
(void) snprintf(errbuf, sizeof (errbuf),
dgettext(TEXT_DOMAIN,
"cannot create bookmark '%s'"), argv[1]);
"cannot create bookmark '%s'"), bookname);
switch (ret) {
case EXDEV:
@ -6945,6 +6958,9 @@ zfs_do_bookmark(int argc, char **argv)
case ENOSPC:
err_msg = "out of space";
break;
case ENOENT:
err_msg = "dataset does not exist";
break;
default:
err_msg = "unknown error";
break;