diff options
Diffstat (limited to 'cmds-device.c')
| -rw-r--r-- | cmds-device.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/cmds-device.c b/cmds-device.c index 4787aca1..75ee293d 100644 --- a/cmds-device.c +++ b/cmds-device.c @@ -250,11 +250,46 @@ static int cmd_scan_dev(int argc, char **argv) return 0; } +static const char * const cmd_ready_dev_usage[] = { + "btrfs device ready <device>", + "Check device to see if it has all of it's devices in cache for mounting", + NULL +}; + +static int cmd_ready_dev(int argc, char **argv) +{ + struct btrfs_ioctl_vol_args args; + int fd; + int ret; + + if (check_argc_min(argc, 2)) + usage(cmd_ready_dev_usage); + + fd = open("/dev/btrfs-control", O_RDWR); + if (fd < 0) { + perror("failed to open /dev/btrfs-control"); + return 10; + } + + strncpy(args.name, argv[argc - 1], BTRFS_PATH_NAME_MAX); + ret = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args); + if (ret < 0) { + fprintf(stderr, "ERROR: unable to determine if the device '%s'" + " is ready for mounting - %s\n", argv[argc - 1], + strerror(errno)); + ret = 1; + } + + close(fd); + return ret; +} + const struct cmd_group device_cmd_group = { device_cmd_group_usage, NULL, { { "add", cmd_add_dev, cmd_add_dev_usage, NULL, 0 }, { "delete", cmd_rm_dev, cmd_rm_dev_usage, NULL, 0 }, { "scan", cmd_scan_dev, cmd_scan_dev_usage, NULL, 0 }, + { "ready", cmd_ready_dev, cmd_ready_dev_usage, NULL, 0 }, { 0, 0, 0, 0, 0 } } }; |