btrfs-progs: tests: add shell quotes to mkfs test scripts

[platform/upstream/btrfs-progs.git] / cmds-quota.c

diff --git a/cmds-quota.c b/cmds-quota.c
index 8481514..745889d 100644 (file)
--- a/cmds-quota.c
+++ b/cmds-quota.c
@@ -24,19 +24,20 @@
 
 #include "commands.h"
 #include "utils.h"
+#include "help.h"
 
 static const char * const quota_cmd_group_usage[] = {
        "btrfs quota <command> [options] <path>",
        NULL
 };
 
-int quota_ctl(int cmd, int argc, char **argv)
+static 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;
+       DIR *dirstream = NULL;
 
        if (check_argc_exact(argc, 2))
                return -1;
@@ -44,19 +45,15 @@ int quota_ctl(int cmd, int argc, char **argv)
        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;
-       }
+       fd = btrfs_open_dir(path, &dirstream, 1);
+       if (fd < 0)
+               return 1;
 
        ret = ioctl(fd, BTRFS_IOC_QUOTA_CTL, &args);
-       e = errno;
-       close(fd);
+       close_file_or_dir(fd, dirstream);
        if (ret < 0) {
-               fprintf(stderr, "ERROR: quota command failed: %s\n",
-                       strerror(e));
-               return 30;
+               error("quota command failed: %m");
+               return 1;
        }
        return 0;
 }
@@ -64,12 +61,20 @@ int quota_ctl(int cmd, int argc, char **argv)
 static const char * const cmd_quota_enable_usage[] = {
        "btrfs quota enable <path>",
        "Enable subvolume quota support for a filesystem.",
+       "Any data already present on the filesystem will not count towards",
+       "the space usage numbers. It is recommended to enable quota for a",
+       "filesystem before writing any data to it.",
        NULL
 };
 
 static int cmd_quota_enable(int argc, char **argv)
 {
-       int ret = quota_ctl(BTRFS_QUOTA_CTL_ENABLE, argc, argv);
+       int ret;
+
+       clean_args_no_options(argc, argv, cmd_quota_enable_usage);
+
+       ret = quota_ctl(BTRFS_QUOTA_CTL_ENABLE, argc, argv);
+
        if (ret < 0)
                usage(cmd_quota_enable_usage);
        return ret;
@@ -83,32 +88,118 @@ static const char * const cmd_quota_disable_usage[] = {
 
 static int cmd_quota_disable(int argc, char **argv)
 {
-       int ret = quota_ctl(BTRFS_QUOTA_CTL_DISABLE, argc, argv);
+       int ret;
+
+       clean_args_no_options(argc, argv, cmd_quota_disable_usage);
+
+       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.",
+       "btrfs quota rescan [-sw] <path>",
+       "Trash all qgroup numbers and scan the metadata again with the current config.",
+       "",
+       "-s   show status of a running rescan operation",
+       "-w   wait for rescan operation to finish (can be already in progress)",
        NULL
 };
 
 static int cmd_quota_rescan(int argc, char **argv)
 {
-       int ret = quota_ctl(BTRFS_QUOTA_CTL_RESCAN, argc, argv);
-       if (ret < 0)
+       int ret = 0;
+       int fd;
+       int e;
+       char *path = NULL;
+       struct btrfs_ioctl_quota_rescan_args args;
+       unsigned long ioctlnum = BTRFS_IOC_QUOTA_RESCAN;
+       DIR *dirstream = NULL;
+       int wait_for_completion = 0;
+
+       while (1) {
+               int c = getopt(argc, argv, "sw");
+               if (c < 0)
+                       break;
+               switch (c) {
+               case 's':
+                       ioctlnum = BTRFS_IOC_QUOTA_RESCAN_STATUS;
+                       break;
+               case 'w':
+                       wait_for_completion = 1;
+                       break;
+               default:
+                       usage(cmd_quota_rescan_usage);
+               }
+       }
+
+       if (ioctlnum != BTRFS_IOC_QUOTA_RESCAN && wait_for_completion) {
+               error("switch -w cannot be used with -s");
+               return 1;
+       }
+
+       if (check_argc_exact(argc - optind, 1))
                usage(cmd_quota_rescan_usage);
-       return ret;
+
+       memset(&args, 0, sizeof(args));
+
+       path = argv[optind];
+       fd = btrfs_open_dir(path, &dirstream, 1);
+       if (fd < 0)
+               return 1;
+
+       ret = ioctl(fd, ioctlnum, &args);
+       e = errno;
+
+       if (ioctlnum == BTRFS_IOC_QUOTA_RESCAN_STATUS) {
+               close_file_or_dir(fd, dirstream);
+               if (ret < 0) {
+                       error("could not obtain quota rescan status: %m");
+                       return 1;
+               }
+               if (!args.flags)
+                       printf("no rescan operation in progress\n");
+               else
+                       printf("rescan operation running (current key %lld)\n",
+                               args.progress);
+               return 0;
+       }
+
+       if (ret == 0) {
+               printf("quota rescan started\n");
+               fflush(stdout);
+       } else if (ret < 0 && (!wait_for_completion || e != EINPROGRESS)) {
+               error("quota rescan failed: %m");
+               close_file_or_dir(fd, dirstream);
+               return 1;
+       }
+
+       if (wait_for_completion) {
+               ret = ioctl(fd, BTRFS_IOC_QUOTA_RESCAN_WAIT, &args);
+               e = errno;
+               if (ret < 0) {
+                       error("quota rescan wait failed: %m");
+                       close_file_or_dir(fd, dirstream);
+                       return 1;
+               }
+       }
+
+       close_file_or_dir(fd, dirstream);
+       return 0;
 }
 
+static const char quota_cmd_group_info[] =
+"manage filesystem quota settings";
+
 const struct cmd_group quota_cmd_group = {
-       quota_cmd_group_usage, NULL, {
+       quota_cmd_group_usage, quota_cmd_group_info, {
                { "enable", cmd_quota_enable, cmd_quota_enable_usage, NULL, 0 },
-               { "disable", cmd_quota_disable, cmd_quota_disable_usage, 0, 0 },
+               { "disable", cmd_quota_disable, cmd_quota_disable_usage,
+                  NULL, 0 },
                { "rescan", cmd_quota_rescan, cmd_quota_rescan_usage, NULL, 0 },
-               { 0, 0, 0, 0, 0 }
+               NULL_CMD_STRUCT
        }
 };