mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-28 00:52:17 +00:00
502e2a3510
Currently, users wishing to manage Btrfs filesystems programatically have to shell out to btrfs-progs and parse the output. This isn't ideal. The goal of libbtrfsutil is to provide a library version of as many of the operations of btrfs-progs as possible and to migrate btrfs-progs to use it. Rather than simply refactoring the existing btrfs-progs code, the code has to be written from scratch for a couple of reasons: * A lot of the btrfs-progs code was not designed with a nice library API in mind in terms of reusability, naming, and error reporting. * libbtrfsutil is licensed under the LGPL, whereas btrfs-progs is under the GPL, which makes it dubious to directly copy or move the code. Eventually, most of the low-level btrfs-progs code should either live in libbtrfsutil or the shared kernel/userspace filesystem code, and btrfs-progs will just be the CLI wrapper. This first commit just includes the build system changes, license, README, and error reporting helper. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
56 lines
2.4 KiB
C
56 lines
2.4 KiB
C
/*
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* Copyright (C) 2018 Facebook
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*
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* This file is part of libbtrfsutil.
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*
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* libbtrfsutil is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* libbtrfsutil 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
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libbtrfsutil. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stddef.h>
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#include "btrfsutil_internal.h"
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static const char * const error_messages[] = {
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[BTRFS_UTIL_OK] = "Success",
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[BTRFS_UTIL_ERROR_STOP_ITERATION] = "Stop iteration",
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[BTRFS_UTIL_ERROR_NO_MEMORY] = "Cannot allocate memory",
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[BTRFS_UTIL_ERROR_INVALID_ARGUMENT] = "Invalid argument",
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[BTRFS_UTIL_ERROR_NOT_BTRFS] = "Not a Btrfs filesystem",
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[BTRFS_UTIL_ERROR_NOT_SUBVOLUME] = "Not a Btrfs subvolume",
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[BTRFS_UTIL_ERROR_SUBVOLUME_NOT_FOUND] = "Subvolume not found",
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[BTRFS_UTIL_ERROR_OPEN_FAILED] = "Could not open",
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[BTRFS_UTIL_ERROR_RMDIR_FAILED] = "Could not rmdir",
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[BTRFS_UTIL_ERROR_UNLINK_FAILED] = "Could not unlink",
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[BTRFS_UTIL_ERROR_STAT_FAILED] = "Could not stat",
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[BTRFS_UTIL_ERROR_STATFS_FAILED] = "Could not statfs",
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[BTRFS_UTIL_ERROR_SEARCH_FAILED] = "Could not search B-tree",
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[BTRFS_UTIL_ERROR_INO_LOOKUP_FAILED] = "Could not lookup inode",
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[BTRFS_UTIL_ERROR_SUBVOL_GETFLAGS_FAILED] = "Could not get subvolume flags",
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[BTRFS_UTIL_ERROR_SUBVOL_SETFLAGS_FAILED] = "Could not set subvolume flags",
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[BTRFS_UTIL_ERROR_SUBVOL_CREATE_FAILED] = "Could not create subvolume",
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[BTRFS_UTIL_ERROR_SNAP_CREATE_FAILED] = "Could not create snapshot",
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[BTRFS_UTIL_ERROR_SNAP_DESTROY_FAILED] = "Could not destroy subvolume/snapshot",
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[BTRFS_UTIL_ERROR_DEFAULT_SUBVOL_FAILED] = "Could not set default subvolume",
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[BTRFS_UTIL_ERROR_SYNC_FAILED] = "Could not sync filesystem",
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[BTRFS_UTIL_ERROR_START_SYNC_FAILED] = "Could not start filesystem sync",
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[BTRFS_UTIL_ERROR_WAIT_SYNC_FAILED] = "Could not wait for filesystem sync",
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};
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PUBLIC const char *btrfs_util_strerror(enum btrfs_util_error err)
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{
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if (err < 0 || err >= sizeof(error_messages) / sizeof(error_messages[0]))
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return NULL;
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return error_messages[err];
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}
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