btrfs-progs: split subvolume list to its own file
The main functionality of subvolume listing is now in btrfs-list.c but there are no other commands using the API so this will be merged. It's a lot of code so split it to another file. Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
parent
a1f2dd12ad
commit
03650851c5
3
Makefile
3
Makefile
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@ -197,7 +197,8 @@ objects = \
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libbtrfsutil/stubs.o \
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libbtrfsutil/stubs.o \
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libbtrfsutil/subvolume.o
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libbtrfsutil/subvolume.o
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cmds_objects = cmds/subvolume.o cmds/filesystem.o cmds/device.o cmds/scrub.o \
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cmds_objects = cmds/subvolume.o cmds/subvolume-list.o \
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cmds/filesystem.o cmds/device.o cmds/scrub.o \
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cmds/inspect.o cmds/balance.o cmds/send.o cmds/receive.o \
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cmds/inspect.o cmds/balance.o cmds/send.o cmds/receive.o \
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cmds/quota.o cmds/qgroup.o cmds/replace.o check/main.o \
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cmds/quota.o cmds/qgroup.o cmds/replace.o check/main.o \
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cmds/restore.o cmds/rescue.o cmds/rescue-chunk-recover.o \
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cmds/restore.o cmds/rescue.o cmds/rescue-chunk-recover.o \
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@ -130,6 +130,7 @@ int handle_command_group(const struct cmd_struct *cmd, int argc, char **argv);
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extern const char * const generic_cmd_help_usage[];
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extern const char * const generic_cmd_help_usage[];
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DECLARE_COMMAND(subvolume);
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DECLARE_COMMAND(subvolume);
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DECLARE_COMMAND(subvol_list);
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DECLARE_COMMAND(filesystem);
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DECLARE_COMMAND(filesystem);
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DECLARE_COMMAND(filesystem_du);
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DECLARE_COMMAND(filesystem_du);
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DECLARE_COMMAND(filesystem_usage);
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DECLARE_COMMAND(filesystem_usage);
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@ -0,0 +1,231 @@
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include "kerncompat.h"
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#include <getopt.h>
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#include "kernel-shared/ctree.h"
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#include "btrfs-list.h"
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#include "common/help.h"
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#include "common/messages.h"
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#include "common/open-utils.h"
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#include "common/utils.h"
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#include "cmds/commands.h"
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/*
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* Naming of options:
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* - uppercase for filters and sort options
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* - lowercase for enabling specific items in the output
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*/
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static const char * const cmd_subvol_list_usage[] = {
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"btrfs subvolume list [options] <path>",
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"List subvolumes and snapshots in the filesystem.",
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"",
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"Path filtering:",
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"-o print only subvolumes below specified path",
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"-a print all the subvolumes in the filesystem and",
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" distinguish absolute and relative path with respect",
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" to the given <path>",
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"",
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"Field selection:",
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"-p print parent ID",
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"-c print the ogeneration of the subvolume",
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"-g print the generation of the subvolume",
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"-u print the uuid of subvolumes (and snapshots)",
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"-q print the parent uuid of the snapshots",
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"-R print the uuid of the received snapshots",
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"",
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"Type filtering:",
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"-s list only snapshots",
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"-r list readonly subvolumes (including snapshots)",
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"-d list deleted subvolumes that are not yet cleaned",
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"",
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"Other:",
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"-t print the result as a table",
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"",
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"Sorting:",
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"-G [+|-]value",
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" filter the subvolumes by generation",
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" (+value: >= value; -value: <= value; value: = value)",
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"-C [+|-]value",
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" filter the subvolumes by ogeneration",
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" (+value: >= value; -value: <= value; value: = value)",
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"--sort=gen,ogen,rootid,path",
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" list the subvolume in order of gen, ogen, rootid or path",
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" you also can add '+' or '-' in front of each items.",
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" (+:ascending, -:descending, ascending default)",
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NULL,
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};
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static int cmd_subvol_list(const struct cmd_struct *cmd, int argc, char **argv)
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{
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struct btrfs_list_filter_set *filter_set;
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struct btrfs_list_comparer_set *comparer_set;
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u64 flags = 0;
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int fd = -1;
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u64 top_id;
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int ret = -1, uerr = 0;
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char *subvol;
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int is_list_all = 0;
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int is_only_in_path = 0;
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DIR *dirstream = NULL;
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enum btrfs_list_layout layout = BTRFS_LIST_LAYOUT_DEFAULT;
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filter_set = btrfs_list_alloc_filter_set();
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comparer_set = btrfs_list_alloc_comparer_set();
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optind = 0;
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while(1) {
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int c;
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static const struct option long_options[] = {
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{"sort", required_argument, NULL, 'S'},
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{NULL, 0, NULL, 0}
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};
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c = getopt_long(argc, argv,
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"acdgopqsurRG:C:t", long_options, NULL);
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if (c < 0)
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break;
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switch(c) {
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case 'p':
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btrfs_list_setup_print_column(BTRFS_LIST_PARENT);
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break;
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case 'a':
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is_list_all = 1;
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break;
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case 'c':
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btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
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break;
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case 'd':
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btrfs_list_setup_filter(&filter_set,
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BTRFS_LIST_FILTER_DELETED,
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0);
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break;
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case 'g':
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btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
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break;
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case 'o':
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is_only_in_path = 1;
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break;
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case 't':
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layout = BTRFS_LIST_LAYOUT_TABLE;
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break;
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case 's':
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btrfs_list_setup_filter(&filter_set,
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BTRFS_LIST_FILTER_SNAPSHOT_ONLY,
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0);
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btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
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btrfs_list_setup_print_column(BTRFS_LIST_OTIME);
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break;
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case 'u':
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btrfs_list_setup_print_column(BTRFS_LIST_UUID);
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break;
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case 'q':
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btrfs_list_setup_print_column(BTRFS_LIST_PUUID);
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break;
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case 'R':
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btrfs_list_setup_print_column(BTRFS_LIST_RUUID);
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break;
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case 'r':
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flags |= BTRFS_ROOT_SUBVOL_RDONLY;
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break;
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case 'G':
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btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
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ret = btrfs_list_parse_filter_string(optarg,
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&filter_set,
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BTRFS_LIST_FILTER_GEN);
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if (ret) {
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uerr = 1;
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goto out;
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}
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break;
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case 'C':
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btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
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ret = btrfs_list_parse_filter_string(optarg,
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&filter_set,
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BTRFS_LIST_FILTER_CGEN);
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if (ret) {
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uerr = 1;
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goto out;
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}
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break;
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case 'S':
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ret = btrfs_list_parse_sort_string(optarg,
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&comparer_set);
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if (ret) {
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uerr = 1;
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goto out;
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}
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break;
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default:
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uerr = 1;
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goto out;
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}
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}
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if (check_argc_exact(argc - optind, 1))
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goto out;
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subvol = argv[optind];
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fd = btrfs_open_dir(subvol, &dirstream, 1);
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if (fd < 0) {
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ret = -1;
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error("can't access '%s'", subvol);
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goto out;
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}
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if (flags)
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btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_FLAGS,
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flags);
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ret = lookup_path_rootid(fd, &top_id);
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if (ret) {
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errno = -ret;
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error("cannot resolve rootid for path: %m");
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goto out;
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}
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if (is_list_all)
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btrfs_list_setup_filter(&filter_set,
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BTRFS_LIST_FILTER_FULL_PATH,
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top_id);
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else if (is_only_in_path)
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btrfs_list_setup_filter(&filter_set,
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BTRFS_LIST_FILTER_TOPID_EQUAL,
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top_id);
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/* by default we shall print the following columns*/
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btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
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btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
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btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
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btrfs_list_setup_print_column(BTRFS_LIST_PATH);
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ret = btrfs_list_subvols_print(fd, filter_set, comparer_set,
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layout, !is_list_all && !is_only_in_path, NULL);
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out:
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close_file_or_dir(fd, dirstream);
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if (filter_set)
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free(filter_set);
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if (comparer_set)
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free(comparer_set);
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if (uerr)
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usage(cmd);
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return !!ret;
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}
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DEFINE_SIMPLE_COMMAND(subvol_list, "list");
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207
cmds/subvolume.c
207
cmds/subvolume.c
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@ -37,7 +37,6 @@
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#include "kernel-shared/ctree.h"
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#include "kernel-shared/ctree.h"
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#include "cmds/commands.h"
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#include "cmds/commands.h"
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#include "common/utils.h"
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#include "common/utils.h"
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#include "btrfs-list.h"
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#include "common/help.h"
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#include "common/help.h"
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#include "common/path-utils.h"
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#include "common/path-utils.h"
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#include "common/device-scan.h"
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#include "common/device-scan.h"
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@ -505,212 +504,6 @@ keep_fd:
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}
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}
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static DEFINE_SIMPLE_COMMAND(subvol_delete, "delete");
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static DEFINE_SIMPLE_COMMAND(subvol_delete, "delete");
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/*
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* Naming of options:
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* - uppercase for filters and sort options
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* - lowercase for enabling specific items in the output
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*/
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static const char * const cmd_subvol_list_usage[] = {
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"btrfs subvolume list [options] <path>",
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"List subvolumes and snapshots in the filesystem.",
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"",
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"Path filtering:",
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"-o print only subvolumes below specified path",
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"-a print all the subvolumes in the filesystem and",
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|
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" distinguish absolute and relative path with respect",
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" to the given <path>",
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"",
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"Field selection:",
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"-p print parent ID",
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|
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"-c print the ogeneration of the subvolume",
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|
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"-g print the generation of the subvolume",
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|
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"-u print the uuid of subvolumes (and snapshots)",
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|
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"-q print the parent uuid of the snapshots",
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|
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"-R print the uuid of the received snapshots",
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|
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"",
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|
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"Type filtering:",
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|
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"-s list only snapshots",
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|
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"-r list readonly subvolumes (including snapshots)",
|
|
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"-d list deleted subvolumes that are not yet cleaned",
|
|
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"",
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|
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"Other:",
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|
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"-t print the result as a table",
|
|
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"",
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|
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"Sorting:",
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|
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"-G [+|-]value",
|
|
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" filter the subvolumes by generation",
|
|
||||||
" (+value: >= value; -value: <= value; value: = value)",
|
|
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"-C [+|-]value",
|
|
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" filter the subvolumes by ogeneration",
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|
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" (+value: >= value; -value: <= value; value: = value)",
|
|
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"--sort=gen,ogen,rootid,path",
|
|
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" list the subvolume in order of gen, ogen, rootid or path",
|
|
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" you also can add '+' or '-' in front of each items.",
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|
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" (+:ascending, -:descending, ascending default)",
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NULL,
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};
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static int cmd_subvol_list(const struct cmd_struct *cmd, int argc, char **argv)
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{
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struct btrfs_list_filter_set *filter_set;
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|
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struct btrfs_list_comparer_set *comparer_set;
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u64 flags = 0;
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|
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int fd = -1;
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|
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u64 top_id;
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int ret = -1, uerr = 0;
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|
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char *subvol;
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int is_list_all = 0;
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int is_only_in_path = 0;
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DIR *dirstream = NULL;
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enum btrfs_list_layout layout = BTRFS_LIST_LAYOUT_DEFAULT;
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filter_set = btrfs_list_alloc_filter_set();
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comparer_set = btrfs_list_alloc_comparer_set();
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|
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optind = 0;
|
|
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while(1) {
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|
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int c;
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|
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static const struct option long_options[] = {
|
|
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{"sort", required_argument, NULL, 'S'},
|
|
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{NULL, 0, NULL, 0}
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|
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};
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|
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|
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c = getopt_long(argc, argv,
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|
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"acdgopqsurRG:C:t", long_options, NULL);
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|
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if (c < 0)
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|
||||||
break;
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|
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|
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switch(c) {
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case 'p':
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|
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btrfs_list_setup_print_column(BTRFS_LIST_PARENT);
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break;
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|
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case 'a':
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is_list_all = 1;
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break;
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|
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case 'c':
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|
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btrfs_list_setup_print_column(BTRFS_LIST_OGENERATION);
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|
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break;
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|
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case 'd':
|
|
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btrfs_list_setup_filter(&filter_set,
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|
||||||
BTRFS_LIST_FILTER_DELETED,
|
|
||||||
0);
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|
||||||
break;
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|
||||||
case 'g':
|
|
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btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
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|
||||||
break;
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|
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case 'o':
|
|
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is_only_in_path = 1;
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|
||||||
break;
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|
||||||
case 't':
|
|
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layout = BTRFS_LIST_LAYOUT_TABLE;
|
|
||||||
break;
|
|
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case 's':
|
|
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btrfs_list_setup_filter(&filter_set,
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|
||||||
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':
|
|
||||||
btrfs_list_setup_print_column(BTRFS_LIST_RUUID);
|
|
||||||
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 (check_argc_exact(argc - optind, 1))
|
|
||||||
goto out;
|
|
||||||
|
|
||||||
subvol = argv[optind];
|
|
||||||
fd = btrfs_open_dir(subvol, &dirstream, 1);
|
|
||||||
if (fd < 0) {
|
|
||||||
ret = -1;
|
|
||||||
error("can't access '%s'", subvol);
|
|
||||||
goto out;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (flags)
|
|
||||||
btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_FLAGS,
|
|
||||||
flags);
|
|
||||||
|
|
||||||
ret = lookup_path_rootid(fd, &top_id);
|
|
||||||
if (ret) {
|
|
||||||
errno = -ret;
|
|
||||||
error("cannot resolve rootid for path: %m");
|
|
||||||
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);
|
|
||||||
|
|
||||||
ret = btrfs_list_subvols_print(fd, filter_set, comparer_set,
|
|
||||||
layout, !is_list_all && !is_only_in_path, NULL);
|
|
||||||
|
|
||||||
out:
|
|
||||||
close_file_or_dir(fd, dirstream);
|
|
||||||
if (filter_set)
|
|
||||||
free(filter_set);
|
|
||||||
if (comparer_set)
|
|
||||||
free(comparer_set);
|
|
||||||
if (uerr)
|
|
||||||
usage(cmd);
|
|
||||||
return !!ret;
|
|
||||||
}
|
|
||||||
static DEFINE_SIMPLE_COMMAND(subvol_list, "list");
|
|
||||||
|
|
||||||
static const char * const cmd_subvol_snapshot_usage[] = {
|
static const char * const cmd_subvol_snapshot_usage[] = {
|
||||||
"btrfs subvolume snapshot [-r] [-i <qgroupid>] <source> <dest>|[<dest>/]<name>",
|
"btrfs subvolume snapshot [-r] [-i <qgroupid>] <source> <dest>|[<dest>/]<name>",
|
||||||
"Create a snapshot of the subvolume",
|
"Create a snapshot of the subvolume",
|
||||||
|
|
Loading…
Reference in New Issue