| /* |
| * Copyright (c) 2012 Red Hat, Inc. |
| * All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would 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 the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libxfs.h" |
| #include <linux/fs.h> |
| #include "command.h" |
| #include "init.h" |
| #include "path.h" |
| #include "space.h" |
| #include "input.h" |
| |
| static cmdinfo_t trim_cmd; |
| |
| /* |
| * Trim unused space in xfs filesystem. |
| */ |
| static int |
| trim_f( |
| int argc, |
| char **argv) |
| { |
| struct fstrim_range trim = {0}; |
| xfs_agnumber_t agno = 0; |
| off64_t offset = 0; |
| ssize_t length = 0; |
| ssize_t minlen = 0; |
| int aflag = 0; |
| int fflag = 0; |
| int ret; |
| int c; |
| |
| while ((c = getopt(argc, argv, "a:fm:")) != EOF) { |
| switch (c) { |
| case 'a': |
| aflag = 1; |
| agno = cvt_u32(optarg, 10); |
| if (errno) { |
| printf(_("bad agno value %s\n"), optarg); |
| return command_usage(&trim_cmd); |
| } |
| break; |
| case 'f': |
| fflag = 1; |
| break; |
| case 'm': |
| minlen = cvtnum(file->geom.blocksize, |
| file->geom.sectsize, optarg); |
| break; |
| default: |
| return command_usage(&trim_cmd); |
| } |
| } |
| |
| if (aflag && fflag) |
| return command_usage(&trim_cmd); |
| |
| if (optind != argc - 2 && !(aflag || fflag)) |
| return command_usage(&trim_cmd); |
| if (optind != argc) { |
| offset = cvtnum(file->geom.blocksize, file->geom.sectsize, |
| argv[optind]); |
| length = cvtnum(file->geom.blocksize, file->geom.sectsize, |
| argv[optind + 1]); |
| } else if (agno) { |
| offset = (off64_t)agno * file->geom.agblocks * file->geom.blocksize; |
| length = file->geom.agblocks * file->geom.blocksize; |
| } else { |
| offset = 0; |
| length = file->geom.datablocks * file->geom.blocksize; |
| } |
| |
| trim.start = offset; |
| trim.len = length; |
| trim.minlen = minlen; |
| |
| ret = ioctl(file->fd, FITRIM, (unsigned long)&trim); |
| if (ret < 0) { |
| fprintf(stderr, "%s: ioctl(FITRIM) [\"%s\"]: %s\n", |
| progname, file->name, strerror(errno)); |
| exitcode = 1; |
| } |
| return 0; |
| } |
| |
| static void |
| trim_help(void) |
| { |
| printf(_( |
| "\n" |
| "Discard filesystem free space\n" |
| "\n" |
| " -a agno -- trim all the freespace in the given AG agno\n" |
| " -f -- trim all the freespace in the entire filesystem\n" |
| " offset length -- trim the freespace in the range {offset, length}\n" |
| " -m minlen -- skip freespace extents smaller than minlen\n" |
| "\n" |
| "One of -a, -f, or the offset/length pair are required.\n" |
| "\n")); |
| |
| } |
| |
| void |
| trim_init(void) |
| { |
| trim_cmd.name = "trim"; |
| trim_cmd.altname = "tr"; |
| trim_cmd.cfunc = trim_f; |
| trim_cmd.argmin = 1; |
| trim_cmd.argmax = 4; |
| trim_cmd.args = "[-m minlen] ( -a agno | -f | offset length )"; |
| trim_cmd.flags = CMD_FLAG_ONESHOT; |
| trim_cmd.oneline = _("Discard filesystem free space"); |
| trim_cmd.help = trim_help; |
| |
| add_command(&trim_cmd); |
| } |
| |