projects / thirdparty / xfsprogs-dev.git / blame
| Commit | Line | Data |
|---|---|---|
| 57e7138a BF |
1 | /* |
| 2 | * Copyright (c) 2018 Red Hat, Inc. | |
| 3 | * All Rights Reserved. | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or | |
| 6 | * modify it under the terms of the GNU General Public License as | |
| 7 | * published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it would be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License | |
| 15 | * along with this program; if not, write the Free Software Foundation, | |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 17 | */ | |
| 18 | ||
| 19 | #include "command.h" | |
| 20 | #include "input.h" | |
| 21 | #include "init.h" | |
| 22 | #include "io.h" | |
| 23 | ||
| 24 | static cmdinfo_t swapext_cmd; | |
| 25 | ||
| 26 | static void | |
| 27 | swapext_help(void) | |
| 28 | { | |
| 29 | printf(_( | |
| 30 | "\n" | |
| 31 | " Swaps extents between the open file descriptor and the supplied filename.\n" | |
| 32 | "\n")); | |
| 33 | } | |
| 34 | ||
| 35 | static int | |
| 36 | xfs_bulkstat_single( | |
| 37 | int fd, | |
| 38 | xfs_ino_t *lastip, | |
| 39 | struct xfs_bstat *ubuffer) | |
| 40 | { | |
| 41 | struct xfs_fsop_bulkreq bulkreq; | |
| 42 | ||
| 43 | bulkreq.lastip = (__u64 *)lastip; | |
| 44 | bulkreq.icount = 1; | |
| 45 | bulkreq.ubuffer = ubuffer; | |
| 46 | bulkreq.ocount = NULL; | |
| 47 | return ioctl(fd, XFS_IOC_FSBULKSTAT_SINGLE, &bulkreq); | |
| 48 | } | |
| 49 | ||
| 50 | static int | |
| 51 | swapext_f( | |
| 52 | int argc, | |
| 53 | char **argv) | |
| 54 | { | |
| 55 | int fd; | |
| 56 | int error; | |
| 57 | struct xfs_swapext sx; | |
| 58 | struct stat stat; | |
| 59 | ||
| 60 | /* open the donor file */ | |
| 61 | fd = openfile(argv[1], NULL, 0, 0, NULL); | |
| 62 | if (fd < 0) | |
| 63 | return 0; | |
| 64 | ||
| 65 | /* | |
| 66 | * stat the target file to get the inode number and use the latter to | |
| 67 | * get the bulkstat info for the swapext cmd. | |
| 68 | */ | |
| 69 | error = fstat(file->fd, &stat); | |
| 70 | if (error) { | |
| 71 | perror("fstat"); | |
| 72 | goto out; | |
| 73 | } | |
| 74 | ||
| 75 | error = xfs_bulkstat_single(file->fd, &stat.st_ino, &sx.sx_stat); | |
| 76 | if (error) { | |
| 77 | perror("bulkstat"); | |
| 78 | goto out; | |
| 79 | } | |
| 80 | sx.sx_version = XFS_SX_VERSION; | |
| 81 | sx.sx_fdtarget = file->fd; | |
| 82 | sx.sx_fdtmp = fd; | |
| 83 | sx.sx_offset = 0; | |
| 84 | sx.sx_length = stat.st_size; | |
| 85 | error = ioctl(file->fd, XFS_IOC_SWAPEXT, &sx); | |
| 86 | if (error) | |
| 87 | perror("swapext"); | |
| 88 | ||
| 89 | out: | |
| 90 | close(fd); | |
| 91 | return 0; | |
| 92 | } | |
| 93 | ||
| 94 | void | |
| 95 | swapext_init(void) | |
| 96 | { | |
| 97 | swapext_cmd.name = "swapext"; | |
| 98 | swapext_cmd.cfunc = swapext_f; | |
| 99 | swapext_cmd.argmin = 1; | |
| 100 | swapext_cmd.argmax = 1; | |
| 101 | swapext_cmd.flags = CMD_NOMAP_OK; | |
| 102 | swapext_cmd.args = _("<donorfile>"); | |
| 103 | swapext_cmd.oneline = _("Swap extents between files."); | |
| 104 | swapext_cmd.help = swapext_help; | |
| 105 | ||
| 106 | add_command(&swapext_cmd); | |
| 107 | } |