blob: ccb47627424072acad8ee516ba916fea8ef31c3c [file] [log] [blame]
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <sys/stat.h>
#include <libgen.h>
#include <limits.h>
#include <getopt.h>
#include <uuid/uuid.h>
#include "kerncompat.h"
#include "ioctl.h"
#include "qgroup.h"
#include "ctree.h"
#include "commands.h"
#include "utils.h"
#include "btrfs-list.h"
#include "utils.h"
static const char * const subvolume_cmd_group_usage[] = {
"btrfs subvolume <command> <args>",
NULL
};
/*
* test if path is a directory
* this function return
* 0-> path exists but it is not a directory
* 1-> path exists and it is a directory
* -1 -> path is unaccessible
*/
static int test_isdir(char *path)
{
struct stat st;
int res;
res = stat(path, &st);
if(res < 0 )
return -1;
return S_ISDIR(st.st_mode);
}
static const char * const cmd_subvol_create_usage[] = {
"btrfs subvolume create [-i <qgroupid>] [<dest>/]<name>",
"Create a subvolume",
"Create a subvolume <name> in <dest>. If <dest> is not given",
"subvolume <name> will be created in the current directory.",
"",
"-i <qgroupid> add the newly created subvolume to a qgroup. This",
" option can be given multiple times.",
NULL
};
static int cmd_subvol_create(int argc, char **argv)
{
int retval, res, len;
int fddst = -1;
char *newname;
char *dstdir;
char *dst;
struct btrfs_qgroup_inherit *inherit = NULL;
optind = 1;
while (1) {
int c = getopt(argc, argv, "c:i:r");
if (c < 0)
break;
switch (c) {
case 'c':
res = qgroup_inherit_add_copy(&inherit, optarg, 0);
if (res)
return res;
break;
case 'i':
res = qgroup_inherit_add_group(&inherit, optarg);
if (res)
return res;
break;
default:
usage(cmd_subvol_create_usage);
}
}
if (check_argc_exact(argc - optind, 1))
usage(cmd_subvol_create_usage);
dst = argv[optind];
retval = 1; /* failure */
res = test_isdir(dst);
if (res >= 0) {
fprintf(stderr, "ERROR: '%s' exists\n", dst);
goto out;
}
newname = strdup(dst);
newname = basename(newname);
dstdir = strdup(dst);
dstdir = dirname(dstdir);
if (!strcmp(newname, ".") || !strcmp(newname, "..") ||
strchr(newname, '/') ){
fprintf(stderr, "ERROR: uncorrect subvolume name ('%s')\n",
newname);
goto out;
}
len = strlen(newname);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "ERROR: subvolume name too long ('%s)\n",
newname);
goto out;
}
fddst = open_file_or_dir(dstdir);
if (fddst < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", dstdir);
goto out;
}
printf("Create subvolume '%s/%s'\n", dstdir, newname);
if (inherit) {
struct btrfs_ioctl_vol_args_v2 args;
memset(&args, 0, sizeof(args));
strncpy_null(args.name, newname);
args.flags |= BTRFS_SUBVOL_QGROUP_INHERIT;
args.size = qgroup_inherit_size(inherit);
args.qgroup_inherit = inherit;
res = ioctl(fddst, BTRFS_IOC_SUBVOL_CREATE_V2, &args);
} else {
struct btrfs_ioctl_vol_args args;
memset(&args, 0, sizeof(args));
strncpy_null(args.name, newname);
res = ioctl(fddst, BTRFS_IOC_SUBVOL_CREATE, &args);
}
if (res < 0) {
fprintf(stderr, "ERROR: cannot create subvolume - %s\n",
strerror(errno));
goto out;
}
retval = 0; /* success */
out:
if (fddst != -1)
close(fddst);
free(inherit);
return retval;
}
/*
* test if path is a subvolume:
* this function return
* 0-> path exists but it is not a subvolume
* 1-> path exists and it is a subvolume
* -1 -> path is unaccessible
*/
int test_issubvolume(char *path)
{
struct stat st;
int res;
res = stat(path, &st);
if(res < 0 )
return -1;
return (st.st_ino == 256) && S_ISDIR(st.st_mode);
}
static const char * const cmd_subvol_delete_usage[] = {
"btrfs subvolume delete <subvolume> [<subvolume>...]",
"Delete subvolume(s)",
NULL
};
static int cmd_subvol_delete(int argc, char **argv)
{
int res, fd, len, e, cnt = 1, ret = 0;
struct btrfs_ioctl_vol_args args;
char *dname, *vname, *cpath;
char *path;
if (argc < 2)
usage(cmd_subvol_delete_usage);
again:
path = argv[cnt];
res = test_issubvolume(path);
if(res<0){
fprintf(stderr, "ERROR: error accessing '%s'\n", path);
ret = 12;
goto out;
}
if(!res){
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", path);
ret = 13;
goto out;
}
cpath = realpath(path, 0);
dname = strdup(cpath);
dname = dirname(dname);
vname = strdup(cpath);
vname = basename(vname);
free(cpath);
if( !strcmp(vname,".") || !strcmp(vname,"..") ||
strchr(vname, '/') ){
fprintf(stderr, "ERROR: incorrect subvolume name ('%s')\n",
vname);
ret = 14;
goto out;
}
len = strlen(vname);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "ERROR: snapshot name too long ('%s)\n",
vname);
ret = 14;
goto out;
}
fd = open_file_or_dir(dname);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", dname);
ret = 12;
goto out;
}
printf("Delete subvolume '%s/%s'\n", dname, vname);
strncpy_null(args.name, vname);
res = ioctl(fd, BTRFS_IOC_SNAP_DESTROY, &args);
e = errno;
close(fd);
if(res < 0 ){
fprintf( stderr, "ERROR: cannot delete '%s/%s' - %s\n",
dname, vname, strerror(e));
ret = 11;
goto out;
}
out:
cnt++;
if (cnt < argc)
goto again;
return ret;
}
/*
* Naming of options:
* - uppercase for filters and sort options
* - lowercase for enabling specific items in the output
*/
static const char * const cmd_subvol_list_usage[] = {
"btrfs subvolume list [-agopurts] [-G [+|-]value] [-C [+|-]value] "
"[--sort=gen,ogen,rootid,path] <path>",
"List subvolumes (and snapshots)",
"",
"-p print parent ID",
"-a print all the subvolumes in the filesystem and",
" distinguish absolute and relative path with respect",
" to the given <path>",
"-c print the ogeneration of the subvolume",
"-g print the generation of the subvolume",
"-o print only subvolumes bellow specified path",
"-u print the uuid of subvolumes (and snapshots)",
"-q print the parent uuid of the snapshots",
"-t print the result as a table",
"-s list snapshots only in the filesystem",
"-r list readonly subvolumes (including snapshots)",
"-G [+|-]value",
" filter the subvolumes by generation",
" (+value: >= value; -value: <= value; value: = value)",
"-C [+|-]value",
" filter the subvolumes by ogeneration",
" (+value: >= value; -value: <= value; value: = value)",
"--sort=gen,ogen,rootid,path",
" list the subvolume in order of gen, ogen, rootid or path",
" you also can add '+' or '-' in front of each items.",
" (+:ascending, -:descending, ascending default)",
NULL,
};
static int cmd_subvol_list(int argc, char **argv)
{
struct btrfs_list_filter_set *filter_set;
struct btrfs_list_comparer_set *comparer_set;
u64 flags = 0;
int fd = -1;
u64 top_id;
int ret = -1, uerr = 0;
int c;
char *subvol;
int is_tab_result = 0;
int is_list_all = 0;
int is_only_in_path = 0;
struct option long_options[] = {
{"sort", 1, NULL, 'S'},
{0, 0, 0, 0}
};
filter_set = btrfs_list_alloc_filter_set();
comparer_set = btrfs_list_alloc_comparer_set();
optind = 1;
while(1) {
c = getopt_long(argc, argv,
"acgopqsurG:C:t", long_options, NULL);
if (c < 0)
break;
switch(c) {
case 'p':
btrfs_list_setup_print_column(BTRFS_LIST_PARENT);
break;
case 'a':
is_list_all = 1;
break;
case 'c':
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
break;
case 'g':
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
break;
case 'o':
is_only_in_path = 1;
break;
case 't':
is_tab_result = 1;
break;
case 's':
btrfs_list_setup_filter(&filter_set,
BTRFS_LIST_FILTER_SNAPSHOT_ONLY,
0);
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
btrfs_list_setup_print_column(BTRFS_LIST_OTIME);
break;
case 'u':
btrfs_list_setup_print_column(BTRFS_LIST_UUID);
break;
case 'q':
btrfs_list_setup_print_column(BTRFS_LIST_PUUID);
break;
case 'r':
flags |= BTRFS_ROOT_SUBVOL_RDONLY;
break;
case 'G':
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
ret = btrfs_list_parse_filter_string(optarg,
&filter_set,
BTRFS_LIST_FILTER_GEN);
if (ret) {
uerr = 1;
goto out;
}
break;
case 'C':
btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
ret = btrfs_list_parse_filter_string(optarg,
&filter_set,
BTRFS_LIST_FILTER_CGEN);
if (ret) {
uerr = 1;
goto out;
}
break;
case 'S':
ret = btrfs_list_parse_sort_string(optarg,
&comparer_set);
if (ret) {
uerr = 1;
goto out;
}
break;
default:
uerr = 1;
goto out;
}
}
if (flags)
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_FLAGS,
flags);
if (check_argc_exact(argc - optind, 1)) {
uerr = 1;
goto out;
}
subvol = argv[optind];
ret = test_issubvolume(subvol);
if (ret < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", subvol);
goto out;
}
if (!ret) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol);
ret = -1;
goto out;
}
fd = open_file_or_dir(subvol);
if (fd < 0) {
ret = -1;
fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
goto out;
}
ret = btrfs_list_get_path_rootid(fd, &top_id);
if (ret) {
fprintf(stderr, "ERROR: can't get rootid for '%s'\n", subvol);
goto out;
}
if (is_list_all)
btrfs_list_setup_filter(&filter_set,
BTRFS_LIST_FILTER_FULL_PATH,
top_id);
else if (is_only_in_path)
btrfs_list_setup_filter(&filter_set,
BTRFS_LIST_FILTER_TOPID_EQUAL,
top_id);
/* by default we shall print the following columns*/
btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
if (is_tab_result)
ret = btrfs_list_subvols_print(fd, filter_set, comparer_set,
BTRFS_LIST_LAYOUT_TABLE,
!is_list_all && !is_only_in_path, NULL);
else
ret = btrfs_list_subvols_print(fd, filter_set, comparer_set,
BTRFS_LIST_LAYOUT_DEFAULT,
!is_list_all && !is_only_in_path, NULL);
out:
if (fd != -1)
close(fd);
if (filter_set)
btrfs_list_free_filter_set(filter_set);
if (comparer_set)
btrfs_list_free_comparer_set(comparer_set);
if (uerr)
usage(cmd_subvol_list_usage);
return ret;
}
static const char * const cmd_snapshot_usage[] = {
"btrfs subvolume snapshot [-r] <source> [<dest>/]<name>",
"btrfs subvolume snapshot [-r] [-i <qgroupid>] <source> [<dest>/]<name>",
"Create a snapshot of the subvolume",
"Create a writable/readonly snapshot of the subvolume <source> with",
"the name <name> in the <dest> directory",
"",
"-r create a readonly snapshot",
"-i <qgroupid> add the newly created snapshot to a qgroup. This",
" option can be given multiple times.",
NULL
};
static int cmd_snapshot(int argc, char **argv)
{
char *subvol, *dst;
int res, retval;
int fd = -1, fddst = -1;
int len, readonly = 0;
char *newname;
char *dstdir;
struct btrfs_ioctl_vol_args_v2 args;
struct btrfs_qgroup_inherit *inherit = NULL;
optind = 1;
memset(&args, 0, sizeof(args));
while (1) {
int c = getopt(argc, argv, "c:i:r");
if (c < 0)
break;
switch (c) {
case 'c':
res = qgroup_inherit_add_copy(&inherit, optarg, 0);
if (res)
return res;
break;
case 'i':
res = qgroup_inherit_add_group(&inherit, optarg);
if (res)
return res;
break;
case 'r':
readonly = 1;
break;
case 'x':
res = qgroup_inherit_add_copy(&inherit, optarg, 1);
if (res)
return res;
break;
default:
usage(cmd_snapshot_usage);
}
}
if (check_argc_exact(argc - optind, 2))
usage(cmd_snapshot_usage);
subvol = argv[optind];
dst = argv[optind + 1];
retval = 1; /* failure */
res = test_issubvolume(subvol);
if (res < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", subvol);
goto out;
}
if (!res) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol);
goto out;
}
res = test_isdir(dst);
if (res == 0) {
fprintf(stderr, "ERROR: '%s' exists and it is not a directory\n", dst);
goto out;
}
if (res > 0) {
newname = strdup(subvol);
newname = basename(newname);
dstdir = dst;
} else {
newname = strdup(dst);
newname = basename(newname);
dstdir = strdup(dst);
dstdir = dirname(dstdir);
}
if (!strcmp(newname, ".") || !strcmp(newname, "..") ||
strchr(newname, '/') ){
fprintf(stderr, "ERROR: incorrect snapshot name ('%s')\n",
newname);
goto out;
}
len = strlen(newname);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "ERROR: snapshot name too long ('%s)\n",
newname);
goto out;
}
fddst = open_file_or_dir(dstdir);
if (fddst < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", dstdir);
goto out;
}
fd = open_file_or_dir(subvol);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", dstdir);
goto out;
}
if (readonly) {
args.flags |= BTRFS_SUBVOL_RDONLY;
printf("Create a readonly snapshot of '%s' in '%s/%s'\n",
subvol, dstdir, newname);
} else {
printf("Create a snapshot of '%s' in '%s/%s'\n",
subvol, dstdir, newname);
}
args.fd = fd;
if (inherit) {
args.flags |= BTRFS_SUBVOL_QGROUP_INHERIT;
args.size = qgroup_inherit_size(inherit);
args.qgroup_inherit = inherit;
}
strncpy_null(args.name, newname);
res = ioctl(fddst, BTRFS_IOC_SNAP_CREATE_V2, &args);
if (res < 0) {
fprintf( stderr, "ERROR: cannot snapshot '%s' - %s\n",
subvol, strerror(errno));
goto out;
}
retval = 0; /* success */
out:
if (fd != -1)
close(fd);
if (fddst != -1)
close(fddst);
free(inherit);
return retval;
}
static const char * const cmd_subvol_get_default_usage[] = {
"btrfs subvolume get-default <path>",
"Get the default subvolume of a filesystem",
NULL
};
static int cmd_subvol_get_default(int argc, char **argv)
{
int fd = -1;
int ret;
char *subvol;
struct btrfs_list_filter_set *filter_set;
u64 default_id;
if (check_argc_exact(argc, 2))
usage(cmd_subvol_get_default_usage);
subvol = argv[1];
ret = test_issubvolume(subvol);
if (ret < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", subvol);
return 1;
}
if (!ret) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol);
return 1;
}
fd = open_file_or_dir(subvol);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
return 1;
}
ret = btrfs_list_get_default_subvolume(fd, &default_id);
if (ret) {
fprintf(stderr, "ERROR: can't perform the search - %s\n",
strerror(errno));
goto out;
}
ret = 1;
if (default_id == 0) {
fprintf(stderr, "ERROR: 'default' dir item not found\n");
goto out;
}
/* no need to resolve roots if FS_TREE is default */
if (default_id == BTRFS_FS_TREE_OBJECTID) {
printf("ID 5 (FS_TREE)\n");
goto out;
}
filter_set = btrfs_list_alloc_filter_set();
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_ROOTID,
default_id);
/* by default we shall print the following columns*/
btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
ret = btrfs_list_subvols_print(fd, filter_set, NULL,
BTRFS_LIST_LAYOUT_DEFAULT, 1, NULL);
if (filter_set)
btrfs_list_free_filter_set(filter_set);
out:
if (fd != -1)
close(fd);
if (ret)
return 1;
return 0;
}
static const char * const cmd_subvol_set_default_usage[] = {
"btrfs subvolume set-default <subvolid> <path>",
"Set the default subvolume of a filesystem",
NULL
};
static int cmd_subvol_set_default(int argc, char **argv)
{
int ret=0, fd, e;
u64 objectid;
char *path;
char *subvolid;
if (check_argc_exact(argc, 3))
usage(cmd_subvol_set_default_usage);
subvolid = argv[1];
path = argv[2];
objectid = (unsigned long long)strtoll(subvolid, NULL, 0);
if (errno == ERANGE) {
fprintf(stderr, "ERROR: invalid tree id (%s)\n", subvolid);
return 1;
}
fd = open_file_or_dir(path);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access to '%s'\n", path);
return 1;
}
ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
e = errno;
close(fd);
if (ret < 0) {
fprintf(stderr, "ERROR: unable to set a new default subvolume - %s\n",
strerror(e));
return 1;
}
return 0;
}
static const char * const cmd_find_new_usage[] = {
"btrfs subvolume find-new <path> <lastgen>",
"List the recently modified files in a filesystem",
NULL
};
static int cmd_find_new(int argc, char **argv)
{
int fd;
int ret;
char *subvol;
u64 last_gen;
if (check_argc_exact(argc, 3))
usage(cmd_find_new_usage);
subvol = argv[1];
last_gen = atoll(argv[2]);
ret = test_issubvolume(subvol);
if (ret < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", subvol);
return 12;
}
if (!ret) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", subvol);
return 13;
}
fd = open_file_or_dir(subvol);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
return 12;
}
ret = btrfs_list_find_updated_files(fd, 0, last_gen);
close(fd);
if (ret)
return 19;
return 0;
}
static const char * const cmd_subvol_show_usage[] = {
"btrfs subvolume show <subvol-path>",
"Show more information of the subvolume",
NULL
};
static int cmd_subvol_show(int argc, char **argv)
{
struct root_info get_ri;
struct btrfs_list_filter_set *filter_set;
char tstr[256];
char uuidparse[37];
char *fullpath = NULL, *svpath = NULL, *mnt = NULL;
char raw_prefix[] = "\t\t\t\t";
u64 sv_id, mntid;
int fd = -1, mntfd = -1;
int ret = -1;
if (check_argc_exact(argc, 2))
usage(cmd_subvol_show_usage);
fullpath = realpath(argv[1], 0);
if (!fullpath) {
fprintf(stderr, "ERROR: finding real path for '%s', %s\n",
argv[1], strerror(errno));
goto out;
}
ret = test_issubvolume(fullpath);
if (ret < 0) {
fprintf(stderr, "ERROR: error accessing '%s'\n", fullpath);
goto out;
}
if (!ret) {
fprintf(stderr, "ERROR: '%s' is not a subvolume\n", fullpath);
ret = -1;
goto out;
}
ret = find_mount_root(fullpath, &mnt);
if (ret < 0) {
fprintf(stderr, "ERROR: find_mount_root failed on %s: "
"%s\n", fullpath, strerror(-ret));
goto out;
}
ret = -1;
svpath = get_subvol_name(mnt, fullpath);
fd = open_file_or_dir(fullpath);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", fullpath);
goto out;
}
ret = btrfs_list_get_path_rootid(fd, &sv_id);
if (ret) {
fprintf(stderr, "ERROR: can't get rootid for '%s'\n",
fullpath);
goto out;
}
mntfd = open_file_or_dir(mnt);
if (mntfd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", mnt);
goto out;
}
ret = btrfs_list_get_path_rootid(mntfd, &mntid);
if (ret) {
fprintf(stderr, "ERROR: can't get rootid for '%s'\n", mnt);
goto out;
}
if (sv_id == BTRFS_FS_TREE_OBJECTID) {
printf("%s is btrfs root\n", fullpath);
goto out;
}
memset(&get_ri, 0, sizeof(get_ri));
get_ri.root_id = sv_id;
if (btrfs_get_subvol(mntfd, &get_ri)) {
fprintf(stderr, "ERROR: can't find '%s'\n",
svpath);
goto out;
}
ret = 0;
/* print the info */
printf("%s\n", fullpath);
printf("\tName: \t\t\t%s\n", get_ri.name);
if (uuid_is_null(get_ri.uuid))
strcpy(uuidparse, "-");
else
uuid_unparse(get_ri.uuid, uuidparse);
printf("\tuuid: \t\t\t%s\n", uuidparse);
if (uuid_is_null(get_ri.puuid))
strcpy(uuidparse, "-");
else
uuid_unparse(get_ri.puuid, uuidparse);
printf("\tParent uuid: \t\t%s\n", uuidparse);
if (get_ri.otime)
strftime(tstr, 256, "%Y-%m-%d %X",
localtime(&get_ri.otime));
else
strcpy(tstr, "-");
printf("\tCreation time: \t\t%s\n", tstr);
printf("\tObject ID: \t\t%llu\n", get_ri.root_id);
printf("\tGeneration (Gen): \t%llu\n", get_ri.gen);
printf("\tGen at creation: \t%llu\n", get_ri.ogen);
printf("\tParent: \t\t%llu\n", get_ri.ref_tree);
printf("\tTop Level: \t\t%llu\n", get_ri.top_id);
if (get_ri.flags & BTRFS_ROOT_SUBVOL_RDONLY)
printf("\tFlags: \t\t\treadonly\n");
else
printf("\tFlags: \t\t\t-\n");
/* print the snapshots of the given subvol if any*/
printf("\tSnapshot(s):\n");
filter_set = btrfs_list_alloc_filter_set();
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_BY_PARENT,
(u64)(unsigned long)get_ri.uuid);
btrfs_list_setup_print_column(BTRFS_LIST_PATH);
btrfs_list_subvols_print(fd, filter_set, NULL, BTRFS_LIST_LAYOUT_RAW,
1, raw_prefix);
/* clean up */
if (get_ri.path)
free(get_ri.path);
if (get_ri.name)
free(get_ri.name);
if (get_ri.full_path)
free(get_ri.full_path);
if (filter_set)
btrfs_list_free_filter_set(filter_set);
out:
if (mntfd >= 0)
close(mntfd);
if (fd >= 0)
close(fd);
if (mnt)
free(mnt);
if (fullpath)
free(fullpath);
return ret;
}
const struct cmd_group subvolume_cmd_group = {
subvolume_cmd_group_usage, NULL, {
{ "create", cmd_subvol_create, cmd_subvol_create_usage, NULL, 0 },
{ "delete", cmd_subvol_delete, cmd_subvol_delete_usage, NULL, 0 },
{ "list", cmd_subvol_list, cmd_subvol_list_usage, NULL, 0 },
{ "snapshot", cmd_snapshot, cmd_snapshot_usage, NULL, 0 },
{ "get-default", cmd_subvol_get_default,
cmd_subvol_get_default_usage, NULL, 0 },
{ "set-default", cmd_subvol_set_default,
cmd_subvol_set_default_usage, NULL, 0 },
{ "find-new", cmd_find_new, cmd_find_new_usage, NULL, 0 },
{ "show", cmd_subvol_show, cmd_subvol_show_usage, NULL, 0 },
{ 0, 0, 0, 0, 0 }
}
};
int cmd_subvolume(int argc, char **argv)
{
return handle_command_group(&subvolume_cmd_group, argc, argv);
}