| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2018 Red Hat, Inc. |
| * All Rights Reserved. |
| */ |
| |
| #include "command.h" |
| #include "input.h" |
| #include "init.h" |
| #include "io.h" |
| #include "libfrog/logging.h" |
| #include "libfrog/fsgeom.h" |
| #include "libfrog/bulkstat.h" |
| |
| static cmdinfo_t swapext_cmd; |
| |
| static void |
| swapext_help(void) |
| { |
| printf(_( |
| "\n" |
| " Swaps extents between the open file descriptor and the supplied filename.\n" |
| "\n")); |
| } |
| |
| static int |
| swapext_f( |
| int argc, |
| char **argv) |
| { |
| struct xfs_fd fxfd = XFS_FD_INIT(file->fd); |
| struct xfs_bulkstat bulkstat; |
| int fd; |
| int error; |
| struct xfs_swapext sx; |
| struct stat stat; |
| |
| /* open the donor file */ |
| fd = openfile(argv[1], NULL, 0, 0, NULL); |
| if (fd < 0) |
| return 0; |
| |
| /* |
| * stat the target file to get the inode number and use the latter to |
| * get the bulkstat info for the swapext cmd. |
| */ |
| error = fstat(file->fd, &stat); |
| if (error) { |
| perror("fstat"); |
| goto out; |
| } |
| |
| error = -xfrog_bulkstat_single(&fxfd, stat.st_ino, 0, &bulkstat); |
| if (error) { |
| xfrog_perror(error, "bulkstat"); |
| goto out; |
| } |
| error = -xfrog_bulkstat_v5_to_v1(&fxfd, &sx.sx_stat, &bulkstat); |
| if (error) { |
| xfrog_perror(error, "bulkstat conversion"); |
| goto out; |
| } |
| sx.sx_version = XFS_SX_VERSION; |
| sx.sx_fdtarget = file->fd; |
| sx.sx_fdtmp = fd; |
| sx.sx_offset = 0; |
| sx.sx_length = stat.st_size; |
| error = ioctl(file->fd, XFS_IOC_SWAPEXT, &sx); |
| if (error) |
| perror("swapext"); |
| |
| out: |
| close(fd); |
| return 0; |
| } |
| |
| void |
| swapext_init(void) |
| { |
| swapext_cmd.name = "swapext"; |
| swapext_cmd.cfunc = swapext_f; |
| swapext_cmd.argmin = 1; |
| swapext_cmd.argmax = 1; |
| swapext_cmd.flags = CMD_NOMAP_OK; |
| swapext_cmd.args = _("<donorfile>"); |
| swapext_cmd.oneline = _("Swap extents between files."); |
| swapext_cmd.help = swapext_help; |
| |
| add_command(&swapext_cmd); |
| } |