#include <sys/ioctl.h>
#include <errno.h>
#include <sys/stat.h>
+#include <getopt.h>
#include "kerncompat.h"
#include "ctree.h"
#include "ioctl.h"
#include "utils.h"
-#include "btrfs_cmds.h"
+#include "commands.h"
-/* FIXME - imported cruft, fix sparse errors and warnings */
-#ifdef __CHECKER__
-#define BLKGETSIZE64 0
-#define BTRFS_IOC_SNAP_CREATE_V2 0
-#define BTRFS_VOL_NAME_MAX 255
-struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
-static inline int ioctl(int fd, int define, void *arg) { return 0; }
-#endif
+static const char * const device_cmd_group_usage[] = {
+ "btrfs device <command> [<args>]",
+ NULL
+};
-int do_add_volume(int nargs, char **args)
-{
+static const char * const cmd_add_dev_usage[] = {
+ "btrfs device add [options] <device> [<device>...] <path>",
+ "Add a device to a filesystem",
+ "-K|--nodiscard do not perform whole device TRIM",
+ "-f|--force force overwrite existing filesystem on the disk",
+ NULL
+};
- char *mntpnt = args[nargs-1];
+static int cmd_add_dev(int argc, char **argv)
+{
+ char *mntpnt;
int i, fdmnt, ret=0, e;
+ DIR *dirstream = NULL;
+ int discard = 1;
+ int force = 0;
+ char estr[100];
+
+ while (1) {
+ int long_index;
+ static struct option long_options[] = {
+ { "nodiscard", optional_argument, NULL, 'K'},
+ { "force", no_argument, NULL, 'f'},
+ { 0, 0, 0, 0 }
+ };
+ int c = getopt_long(argc, argv, "Kf", long_options,
+ &long_index);
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'K':
+ discard = 0;
+ break;
+ case 'f':
+ force = 1;
+ break;
+ default:
+ usage(cmd_add_dev_usage);
+ }
+ }
+
+ argc = argc - optind;
+
+ if (check_argc_min(argc, 2))
+ usage(cmd_add_dev_usage);
+ mntpnt = argv[optind + argc - 1];
- fdmnt = open_file_or_dir(mntpnt);
+ fdmnt = open_file_or_dir(mntpnt, &dirstream);
if (fdmnt < 0) {
- fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
- return 12;
+ fprintf(stderr, "ERROR: can't access '%s'\n", mntpnt);
+ return 1;
}
- for (i = 1; i < (nargs-1); i++ ){
+ for (i = optind; i < optind + argc - 1; i++){
struct btrfs_ioctl_vol_args ioctl_args;
int devfd, res;
u64 dev_block_count = 0;
- struct stat st;
int mixed = 0;
+ char *path;
- res = check_mounted(args[i]);
- if (res < 0) {
- fprintf(stderr, "error checking %s mount status\n",
- args[i]);
- ret++;
- continue;
- }
- if (res == 1) {
- fprintf(stderr, "%s is mounted\n", args[i]);
+ res = test_dev_for_mkfs(argv[i], force, estr);
+ if (res) {
+ fprintf(stderr, "%s", estr);
ret++;
continue;
}
- devfd = open(args[i], O_RDWR);
- if (!devfd) {
- fprintf(stderr, "ERROR: Unable to open device '%s'\n", args[i]);
- close(devfd);
+ devfd = open(argv[i], O_RDWR);
+ if (devfd < 0) {
+ fprintf(stderr, "ERROR: Unable to open device '%s'\n", argv[i]);
ret++;
continue;
}
- res = fstat(devfd, &st);
+
+ res = btrfs_prepare_device(devfd, argv[i], 1, &dev_block_count,
+ 0, &mixed, discard);
+ close(devfd);
if (res) {
- fprintf(stderr, "ERROR: Unable to stat '%s'\n", args[i]);
- close(devfd);
- ret++;
- continue;
- }
- if (!S_ISBLK(st.st_mode)) {
- fprintf(stderr, "ERROR: '%s' is not a block device\n", args[i]);
- close(devfd);
ret++;
- continue;
+ goto error_out;
}
- res = btrfs_prepare_device(devfd, args[i], 1, &dev_block_count, &mixed);
- if (res) {
- fprintf(stderr, "ERROR: Unable to init '%s'\n", args[i]);
- close(devfd);
+ path = canonicalize_path(argv[i]);
+ if (!path) {
+ fprintf(stderr,
+ "ERROR: Could not canonicalize pathname '%s': %s\n",
+ argv[i], strerror(errno));
ret++;
- continue;
+ goto error_out;
}
- close(devfd);
- strncpy(ioctl_args.name, args[i], BTRFS_PATH_NAME_MAX);
+ strncpy_null(ioctl_args.name, path);
res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
e = errno;
- if(res<0){
- fprintf(stderr, "ERROR: error adding the device '%s' - %s\n",
- args[i], strerror(e));
+ if (res < 0) {
+ fprintf(stderr, "ERROR: error adding the device '%s' - %s\n",
+ path, strerror(e));
ret++;
}
-
+ free(path);
}
- close(fdmnt);
- if (ret)
- return ret+20;
- else
- return 0;
-
+error_out:
+ close_file_or_dir(fdmnt, dirstream);
+ return !!ret;
}
-int do_remove_volume(int nargs, char **args)
-{
+static const char * const cmd_rm_dev_usage[] = {
+ "btrfs device delete <device> [<device>...] <path>",
+ "Remove a device from a filesystem",
+ NULL
+};
- char *mntpnt = args[nargs-1];
+static int cmd_rm_dev(int argc, char **argv)
+{
+ char *mntpnt;
int i, fdmnt, ret=0, e;
+ DIR *dirstream = NULL;
- fdmnt = open_file_or_dir(mntpnt);
+ if (check_argc_min(argc, 3))
+ usage(cmd_rm_dev_usage);
+
+ mntpnt = argv[argc - 1];
+
+ fdmnt = open_file_or_dir(mntpnt, &dirstream);
if (fdmnt < 0) {
- fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
- return 12;
+ fprintf(stderr, "ERROR: can't access '%s'\n", mntpnt);
+ return 1;
}
- for(i=1 ; i < (nargs-1) ; i++ ){
+ for(i=1 ; i < argc - 1; i++ ){
struct btrfs_ioctl_vol_args arg;
int res;
- strncpy(arg.name, args[i], BTRFS_PATH_NAME_MAX);
+ if (!is_block_device(argv[i])) {
+ fprintf(stderr,
+ "ERROR: %s is not a block device\n", argv[i]);
+ ret++;
+ continue;
+ }
+ strncpy_null(arg.name, argv[i]);
res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
e = errno;
- if(res<0){
- fprintf(stderr, "ERROR: error removing the device '%s' - %s\n",
- args[i], strerror(e));
+ if (res > 0) {
+ fprintf(stderr,
+ "ERROR: error removing the device '%s' - %s\n",
+ argv[i], btrfs_err_str(res));
+ ret++;
+ } else if (res < 0) {
+ fprintf(stderr,
+ "ERROR: error removing the device '%s' - %s\n",
+ argv[i], strerror(e));
ret++;
}
}
- close(fdmnt);
- if( ret)
- return ret+20;
- else
- return 0;
+ close_file_or_dir(fdmnt, dirstream);
+ return !!ret;
}
-int do_scan(int argc, char **argv)
-{
- int i, fd, e;
- int checklist = 1;
- int devstart = 1;
+static const char * const cmd_scan_dev_usage[] = {
+ "btrfs device scan [(-d|--all-devices)|<device> [<device>...]]",
+ "Scan devices for a btrfs filesystem",
+ " -d|--all-devices (deprecated)",
+ NULL
+};
- if( argc >= 2 && !strcmp(argv[1],"--all-devices")){
-
- if( argc >2 ){
- fprintf(stderr, "ERROR: too may arguments\n");
- return 22;
- }
-
- checklist = 0;
- devstart += 1;
+static int cmd_scan_dev(int argc, char **argv)
+{
+ int i, fd, e;
+ int devstart = 1;
+ int all = 0;
+ int ret = 0;
+
+ optind = 1;
+ while (1) {
+ int long_index;
+ static struct option long_options[] = {
+ { "all-devices", no_argument, NULL, 'd'},
+ { 0, 0, 0, 0 },
+ };
+ int c = getopt_long(argc, argv, "d", long_options,
+ &long_index);
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'd':
+ all = 1;
+ break;
+ default:
+ usage(cmd_scan_dev_usage);
+ }
}
- if(argc<=devstart){
-
- int ret;
+ if (all && check_argc_max(argc, 2))
+ usage(cmd_scan_dev_usage);
+ if (all || argc == 1) {
printf("Scanning for Btrfs filesystems\n");
- if(checklist)
- ret = btrfs_scan_block_devices(1);
- else
- ret = btrfs_scan_one_dir("/dev", 1);
- if (ret){
+ ret = btrfs_scan_lblkid(BTRFS_UPDATE_KERNEL);
+ if (ret)
fprintf(stderr, "ERROR: error %d while scanning\n", ret);
- return 18;
- }
- return 0;
+ goto out;
}
fd = open("/dev/btrfs-control", O_RDWR);
if (fd < 0) {
perror("failed to open /dev/btrfs-control");
- return 10;
+ ret = 1;
+ goto out;
}
for( i = devstart ; i < argc ; i++ ){
struct btrfs_ioctl_vol_args args;
- int ret;
+ char *path;
- printf("Scanning for Btrfs filesystems in '%s'\n", argv[i]);
+ if (!is_block_device(argv[i])) {
+ fprintf(stderr,
+ "ERROR: %s is not a block device\n", argv[i]);
+ ret = 1;
+ goto close_out;
+ }
+ path = canonicalize_path(argv[i]);
+ if (!path) {
+ fprintf(stderr,
+ "ERROR: Could not canonicalize path '%s': %s\n",
+ argv[i], strerror(errno));
+ ret = 1;
+ goto close_out;
+ }
+ printf("Scanning for Btrfs filesystems in '%s'\n", path);
- strncpy(args.name, argv[i], BTRFS_PATH_NAME_MAX);
+ strncpy_null(args.name, path);
/*
* FIXME: which are the error code returned by this ioctl ?
* it seems that is impossible to understand if there no is
e = errno;
if( ret < 0 ){
- close(fd);
- fprintf(stderr, "ERROR: unable to scan the device '%s' - %s\n",
- argv[i], strerror(e));
- return 11;
+ fprintf(stderr, "ERROR: unable to scan the device '%s' - %s\n",
+ path, strerror(e));
+ free(path);
+ goto close_out;
}
+ free(path);
}
+close_out:
close(fd);
- return 0;
+out:
+ return !!ret;
+}
+
+static const char * const cmd_ready_dev_usage[] = {
+ "btrfs device ready <device>",
+ "Check device to see if it has all of its 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;
+ char *path;
+
+ 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 1;
+ }
+
+ path = canonicalize_path(argv[argc - 1]);
+ if (!path) {
+ fprintf(stderr,
+ "ERROR: Could not canonicalize pathname '%s': %s\n",
+ argv[argc - 1], strerror(errno));
+ ret = 1;
+ goto out;
+ }
+
+ if (!is_block_device(path)) {
+ fprintf(stderr,
+ "ERROR: %s is not a block device\n", path);
+ ret = 1;
+ goto out;
+ }
+
+ strncpy(args.name, path, 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", path,
+ strerror(errno));
+ ret = 1;
+ }
+
+out:
+ free(path);
+ close(fd);
+ return ret;
+}
+
+static const char * const cmd_dev_stats_usage[] = {
+ "btrfs device stats [-z] <path>|<device>",
+ "Show current device IO stats. -z to reset stats afterwards.",
+ NULL
+};
+
+static int cmd_dev_stats(int argc, char **argv)
+{
+ char *dev_path;
+ struct btrfs_ioctl_fs_info_args fi_args;
+ struct btrfs_ioctl_dev_info_args *di_args = NULL;
+ int ret;
+ int fdmnt;
+ int i;
+ int c;
+ int err = 0;
+ __u64 flags = 0;
+ DIR *dirstream = NULL;
+
+ optind = 1;
+ while ((c = getopt(argc, argv, "z")) != -1) {
+ switch (c) {
+ case 'z':
+ flags = BTRFS_DEV_STATS_RESET;
+ break;
+ case '?':
+ default:
+ usage(cmd_dev_stats_usage);
+ }
+ }
+
+ argc = argc - optind;
+ if (check_argc_exact(argc, 1))
+ usage(cmd_dev_stats_usage);
+
+ dev_path = argv[optind];
+
+ fdmnt = open_path_or_dev_mnt(dev_path, &dirstream);
+ if (fdmnt < 0) {
+ if (errno == EINVAL)
+ fprintf(stderr,
+ "ERROR: '%s' is not a mounted btrfs device\n",
+ dev_path);
+ else
+ fprintf(stderr, "ERROR: can't access '%s': %s\n",
+ dev_path, strerror(errno));
+ return 1;
+ }
+
+ ret = get_fs_info(dev_path, &fi_args, &di_args);
+ if (ret) {
+ fprintf(stderr, "ERROR: getting dev info for devstats failed: "
+ "%s\n", strerror(-ret));
+ err = 1;
+ goto out;
+ }
+ if (!fi_args.num_devices) {
+ fprintf(stderr, "ERROR: no devices found\n");
+ err = 1;
+ goto out;
+ }
+
+ for (i = 0; i < fi_args.num_devices; i++) {
+ struct btrfs_ioctl_get_dev_stats args = {0};
+ __u8 path[BTRFS_DEVICE_PATH_NAME_MAX + 1];
+
+ strncpy((char *)path, (char *)di_args[i].path,
+ BTRFS_DEVICE_PATH_NAME_MAX);
+ path[BTRFS_DEVICE_PATH_NAME_MAX] = '\0';
+
+ args.devid = di_args[i].devid;
+ args.nr_items = BTRFS_DEV_STAT_VALUES_MAX;
+ args.flags = flags;
+
+ if (ioctl(fdmnt, BTRFS_IOC_GET_DEV_STATS, &args) < 0) {
+ fprintf(stderr,
+ "ERROR: ioctl(BTRFS_IOC_GET_DEV_STATS) on %s failed: %s\n",
+ path, strerror(errno));
+ err = 1;
+ } else {
+ if (args.nr_items >= BTRFS_DEV_STAT_WRITE_ERRS + 1)
+ printf("[%s].write_io_errs %llu\n",
+ path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_WRITE_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_READ_ERRS + 1)
+ printf("[%s].read_io_errs %llu\n",
+ path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_READ_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_FLUSH_ERRS + 1)
+ printf("[%s].flush_io_errs %llu\n",
+ path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_FLUSH_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_CORRUPTION_ERRS + 1)
+ printf("[%s].corruption_errs %llu\n",
+ path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_CORRUPTION_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_GENERATION_ERRS + 1)
+ printf("[%s].generation_errs %llu\n",
+ path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_GENERATION_ERRS]);
+ }
+ }
+
+out:
+ free(di_args);
+ close_file_or_dir(fdmnt, dirstream);
+
+ return err;
}
+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 },
+ { "stats", cmd_dev_stats, cmd_dev_stats_usage, NULL, 0 },
+ NULL_CMD_STRUCT
+ }
+};
+
+int cmd_device(int argc, char **argv)
+{
+ return handle_command_group(&device_cmd_group, argc, argv);
+}
projects / platform / upstream / btrfs-progs.git / blobdiff