diff options
Diffstat (limited to 'cmds-quota.c')
-rw-r--r-- | cmds-quota.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/cmds-quota.c b/cmds-quota.c new file mode 100644 index 00000000..cf9ad976 --- /dev/null +++ b/cmds-quota.c @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2012 STRATO. 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 v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will 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 to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#include <sys/ioctl.h> +#include <unistd.h> + +#include "ctree.h" +#include "ioctl.h" + +#include "commands.h" + +static const char * const quota_cmd_group_usage[] = { + "btrfs quota <command> [options] <path>", + NULL +}; + +int quota_ctl(int cmd, int argc, char **argv) +{ + int ret = 0; + int fd; + int e; + char *path = argv[1]; + struct btrfs_ioctl_quota_ctl_args args; + + if (check_argc_exact(argc, 2)) + return -1; + + memset(&args, 0, sizeof(args)); + args.cmd = cmd; + + fd = open_file_or_dir(path); + if (fd < 0) { + fprintf(stderr, "ERROR: can't access '%s'\n", path); + return 12; + } + + ret = ioctl(fd, BTRFS_IOC_QUOTA_CTL, &args); + e = errno; + close(fd); + if (ret < 0) { + fprintf(stderr, "ERROR: quota command failed: %s\n", + strerror(e)); + return 30; + } + return 0; +} + +static const char * const cmd_quota_enable_usage[] = { + "btrfs quota enable <path>", + "Enable subvolume quota support for a filesystem.", + NULL +}; + +static int cmd_quota_enable(int argc, char **argv) +{ + int ret = quota_ctl(BTRFS_QUOTA_CTL_ENABLE, argc, argv); + if (ret < 0) + usage(cmd_quota_enable_usage); + return ret; +} + +static const char * const cmd_quota_disable_usage[] = { + "btrfs quota disable <path>", + "Disable subvolume quota support for a filesystem.", + NULL +}; + +static int cmd_quota_disable(int argc, char **argv) +{ + int ret = quota_ctl(BTRFS_QUOTA_CTL_DISABLE, argc, argv); + if (ret < 0) + usage(cmd_quota_disable_usage); + return ret; +} + +static const char * const cmd_quota_rescan_usage[] = { + "btrfs quota rescan <path>", + "Rescan the subvolume for a changed quota setting.", + NULL +}; + +static int cmd_quota_rescan(int argc, char **argv) +{ + int ret = quota_ctl(BTRFS_QUOTA_CTL_RESCAN, argc, argv); + if (ret < 0) + usage(cmd_quota_rescan_usage); + return ret; +} + +const struct cmd_group quota_cmd_group = { + quota_cmd_group_usage, NULL, { + { "enable", cmd_quota_enable, cmd_quota_enable_usage, NULL, 0 }, + { "disable", cmd_quota_disable, cmd_quota_disable_usage, 0, 0 }, + { "rescan", cmd_quota_rescan, cmd_quota_rescan_usage, NULL, 0 }, + { 0, 0, 0, 0, 0 } + } +}; + +int cmd_quota(int argc, char **argv) +{ + return handle_command_group("a_cmd_group, argc, argv); +} |