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-rw-r--r--cmds-filesystem.c488
1 files changed, 488 insertions, 0 deletions
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
new file mode 100644
index 00000000..2e607d2c
--- /dev/null
+++ b/cmds-filesystem.c
@@ -0,0 +1,488 @@
+/*
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <uuid/uuid.h>
+#include <ctype.h>
+
+#include "kerncompat.h"
+#include "ctree.h"
+#include "ioctl.h"
+#include "utils.h"
+#include "volumes.h"
+
+#include "version.h"
+
+#include "btrfs_cmds.h"
+#include "btrfslabel.h"
+
+int do_df_filesystem(int nargs, char **argv)
+{
+ struct btrfs_ioctl_space_args *sargs;
+ u64 count = 0, i;
+ int ret;
+ int fd;
+ int e;
+ char *path = argv[1];
+
+ fd = open_file_or_dir(path);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+
+ sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
+ if (!sargs)
+ return -ENOMEM;
+
+ sargs->space_slots = 0;
+ sargs->total_spaces = 0;
+
+ ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
+ e = errno;
+ if (ret) {
+ fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
+ path, strerror(e));
+ free(sargs);
+ return ret;
+ }
+ if (!sargs->total_spaces)
+ return 0;
+
+ count = sargs->total_spaces;
+
+ sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) +
+ (count * sizeof(struct btrfs_ioctl_space_info)));
+ if (!sargs)
+ return -ENOMEM;
+
+ sargs->space_slots = count;
+ sargs->total_spaces = 0;
+
+ ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
+ e = errno;
+ if (ret) {
+ fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
+ path, strerror(e));
+ close(fd);
+ free(sargs);
+ return ret;
+ }
+
+ for (i = 0; i < sargs->total_spaces; i++) {
+ char description[80];
+ char *total_bytes;
+ char *used_bytes;
+ int written = 0;
+ u64 flags = sargs->spaces[i].flags;
+
+ memset(description, 0, 80);
+
+ if (flags & BTRFS_BLOCK_GROUP_DATA) {
+ if (flags & BTRFS_BLOCK_GROUP_METADATA) {
+ snprintf(description, 14, "%s",
+ "Data+Metadata");
+ written += 13;
+ } else {
+ snprintf(description, 5, "%s", "Data");
+ written += 4;
+ }
+ } else if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
+ snprintf(description, 7, "%s", "System");
+ written += 6;
+ } else if (flags & BTRFS_BLOCK_GROUP_METADATA) {
+ snprintf(description, 9, "%s", "Metadata");
+ written += 8;
+ }
+
+ if (flags & BTRFS_BLOCK_GROUP_RAID0) {
+ snprintf(description+written, 8, "%s", ", RAID0");
+ written += 7;
+ } else if (flags & BTRFS_BLOCK_GROUP_RAID1) {
+ snprintf(description+written, 8, "%s", ", RAID1");
+ written += 7;
+ } else if (flags & BTRFS_BLOCK_GROUP_DUP) {
+ snprintf(description+written, 6, "%s", ", DUP");
+ written += 5;
+ } else if (flags & BTRFS_BLOCK_GROUP_RAID10) {
+ snprintf(description+written, 9, "%s", ", RAID10");
+ written += 8;
+ }
+
+ total_bytes = pretty_sizes(sargs->spaces[i].total_bytes);
+ used_bytes = pretty_sizes(sargs->spaces[i].used_bytes);
+ printf("%s: total=%s, used=%s\n", description, total_bytes,
+ used_bytes);
+ }
+ free(sargs);
+
+ return 0;
+}
+
+static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
+{
+ struct list_head *cur;
+ struct btrfs_device *device;
+
+ list_for_each(cur, &fs_devices->devices) {
+ device = list_entry(cur, struct btrfs_device, dev_list);
+ if ((device->label && strcmp(device->label, search) == 0) ||
+ strcmp(device->name, search) == 0)
+ return 1;
+ }
+ return 0;
+}
+
+static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
+{
+ char uuidbuf[37];
+ struct list_head *cur;
+ struct btrfs_device *device;
+ char *super_bytes_used;
+ u64 devs_found = 0;
+ u64 total;
+
+ uuid_unparse(fs_devices->fsid, uuidbuf);
+ device = list_entry(fs_devices->devices.next, struct btrfs_device,
+ dev_list);
+ if (device->label && device->label[0])
+ printf("Label: '%s' ", device->label);
+ else
+ printf("Label: none ");
+
+ super_bytes_used = pretty_sizes(device->super_bytes_used);
+
+ total = device->total_devs;
+ printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
+ (unsigned long long)total, super_bytes_used);
+
+ free(super_bytes_used);
+
+ list_for_each(cur, &fs_devices->devices) {
+ char *total_bytes;
+ char *bytes_used;
+ device = list_entry(cur, struct btrfs_device, dev_list);
+ total_bytes = pretty_sizes(device->total_bytes);
+ bytes_used = pretty_sizes(device->bytes_used);
+ printf("\tdevid %4llu size %s used %s path %s\n",
+ (unsigned long long)device->devid,
+ total_bytes, bytes_used, device->name);
+ free(total_bytes);
+ free(bytes_used);
+ devs_found++;
+ }
+ if (devs_found < total) {
+ printf("\t*** Some devices missing\n");
+ }
+ printf("\n");
+}
+
+int do_show_filesystem(int argc, char **argv)
+{
+ struct list_head *all_uuids;
+ struct btrfs_fs_devices *fs_devices;
+ struct list_head *cur_uuid;
+ char *search = 0;
+ int ret;
+ int checklist = 1;
+ int searchstart = 1;
+
+ if( argc >= 2 && !strcmp(argv[1],"--all-devices")){
+ checklist = 0;
+ searchstart += 1;
+ }
+
+ if( argc > searchstart+1 ){
+ fprintf(stderr, "ERROR: too many arguments\n");
+ return 22;
+ }
+
+ if(checklist)
+ ret = btrfs_scan_block_devices(0);
+ else
+ ret = btrfs_scan_one_dir("/dev", 0);
+
+ if (ret){
+ fprintf(stderr, "ERROR: error %d while scanning\n", ret);
+ return 18;
+ }
+
+ if(searchstart < argc)
+ search = argv[searchstart];
+
+ all_uuids = btrfs_scanned_uuids();
+ list_for_each(cur_uuid, all_uuids) {
+ fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices,
+ list);
+ if (search && uuid_search(fs_devices, search) == 0)
+ continue;
+ print_one_uuid(fs_devices);
+ }
+ printf("%s\n", BTRFS_BUILD_VERSION);
+ return 0;
+}
+
+int do_fssync(int argc, char **argv)
+{
+ int fd, res, e;
+ char *path = argv[1];
+
+ fd = open_file_or_dir(path);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+
+ printf("FSSync '%s'\n", path);
+ res = ioctl(fd, BTRFS_IOC_SYNC);
+ e = errno;
+ close(fd);
+ if( res < 0 ){
+ fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
+ path, strerror(e));
+ return 16;
+ }
+
+ return 0;
+}
+
+static u64 parse_size(char *s)
+{
+ int len = strlen(s);
+ char c;
+ u64 mult = 1;
+
+ if (!isdigit(s[len - 1])) {
+ c = tolower(s[len - 1]);
+ switch (c) {
+ case 'g':
+ mult *= 1024;
+ case 'm':
+ mult *= 1024;
+ case 'k':
+ mult *= 1024;
+ case 'b':
+ break;
+ default:
+ fprintf(stderr, "Unknown size descriptor %c\n", c);
+ exit(1);
+ }
+ s[len - 1] = '\0';
+ }
+ return atoll(s) * mult;
+}
+
+static int parse_compress_type(char *s)
+{
+ if (strcmp(optarg, "zlib") == 0)
+ return BTRFS_COMPRESS_ZLIB;
+ else if (strcmp(optarg, "lzo") == 0)
+ return BTRFS_COMPRESS_LZO;
+ else {
+ fprintf(stderr, "Unknown compress type %s\n", s);
+ exit(1);
+ };
+}
+
+int do_defrag(int ac, char **av)
+{
+ int fd;
+ int flush = 0;
+ u64 start = 0;
+ u64 len = (u64)-1;
+ u32 thresh = 0;
+ int i;
+ int errors = 0;
+ int ret = 0;
+ int verbose = 0;
+ int fancy_ioctl = 0;
+ struct btrfs_ioctl_defrag_range_args range;
+ int e=0;
+ int compress_type = BTRFS_COMPRESS_NONE;
+
+ optind = 1;
+ while(1) {
+ int c = getopt(ac, av, "vc::fs:l:t:");
+ if (c < 0)
+ break;
+ switch(c) {
+ case 'c':
+ compress_type = BTRFS_COMPRESS_ZLIB;
+ if (optarg)
+ compress_type = parse_compress_type(optarg);
+ fancy_ioctl = 1;
+ break;
+ case 'f':
+ flush = 1;
+ fancy_ioctl = 1;
+ break;
+ case 'v':
+ verbose = 1;
+ break;
+ case 's':
+ start = parse_size(optarg);
+ fancy_ioctl = 1;
+ break;
+ case 'l':
+ len = parse_size(optarg);
+ fancy_ioctl = 1;
+ break;
+ case 't':
+ thresh = parse_size(optarg);
+ fancy_ioctl = 1;
+ break;
+ default:
+ fprintf(stderr, "Invalid arguments for defragment\n");
+ free(av);
+ return 1;
+ }
+ }
+ if (ac - optind == 0) {
+ fprintf(stderr, "Invalid arguments for defragment\n");
+ free(av);
+ return 1;
+ }
+
+ memset(&range, 0, sizeof(range));
+ range.start = start;
+ range.len = len;
+ range.extent_thresh = thresh;
+ if (compress_type) {
+ range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
+ range.compress_type = compress_type;
+ }
+ if (flush)
+ range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
+
+ for (i = optind; i < ac; i++) {
+ if (verbose)
+ printf("%s\n", av[i]);
+ fd = open_file_or_dir(av[i]);
+ if (fd < 0) {
+ fprintf(stderr, "failed to open %s\n", av[i]);
+ perror("open:");
+ errors++;
+ continue;
+ }
+ if (!fancy_ioctl) {
+ ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
+ e=errno;
+ } else {
+ ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &range);
+ if (ret && errno == ENOTTY) {
+ fprintf(stderr, "ERROR: defrag range ioctl not "
+ "supported in this kernel, please try "
+ "without any options.\n");
+ errors++;
+ close(fd);
+ break;
+ }
+ }
+ if (ret) {
+ fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
+ av[i], strerror(e));
+ errors++;
+ }
+ close(fd);
+ }
+ if (verbose)
+ printf("%s\n", BTRFS_BUILD_VERSION);
+ if (errors) {
+ fprintf(stderr, "total %d failures\n", errors);
+ exit(1);
+ }
+
+ free(av);
+ return errors + 20;
+}
+
+int do_balance(int argc, char **argv)
+{
+
+ int fdmnt, ret=0, e;
+ struct btrfs_ioctl_vol_args args;
+ char *path = argv[1];
+
+ fdmnt = open_file_or_dir(path);
+ if (fdmnt < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+
+ memset(&args, 0, sizeof(args));
+ ret = ioctl(fdmnt, BTRFS_IOC_BALANCE, &args);
+ e = errno;
+ close(fdmnt);
+ if(ret<0){
+ fprintf(stderr, "ERROR: error during balancing '%s' - %s\n",
+ path, strerror(e));
+
+ return 19;
+ }
+ return 0;
+}
+
+int do_resize(int argc, char **argv)
+{
+
+ struct btrfs_ioctl_vol_args args;
+ int fd, res, len, e;
+ char *amount=argv[1], *path=argv[2];
+
+ fd = open_file_or_dir(path);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+ len = strlen(amount);
+ if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
+ fprintf(stderr, "ERROR: size value too long ('%s)\n",
+ amount);
+ return 14;
+ }
+
+ printf("Resize '%s' of '%s'\n", path, amount);
+ strncpy(args.name, amount, BTRFS_PATH_NAME_MAX);
+ res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
+ e = errno;
+ close(fd);
+ if( res < 0 ){
+ fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
+ path, strerror(e));
+ return 30;
+ }
+ return 0;
+}
+
+int do_change_label(int nargs, char **argv)
+{
+ /* check the number of argument */
+ if ( nargs > 3 ){
+ fprintf(stderr, "ERROR: '%s' requires maximum 2 args\n",
+ argv[0]);
+ return -2;
+ }else if (nargs == 2){
+ return get_label(argv[1]);
+ } else { /* nargs == 0 */
+ return set_label(argv[1], argv[2]);
+ }
+}
+
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