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-rw-r--r--c_src/cmd_format.c314
1 files changed, 0 insertions, 314 deletions
diff --git a/c_src/cmd_format.c b/c_src/cmd_format.c
index aa87feb0..d0c56882 100644
--- a/c_src/cmd_format.c
+++ b/c_src/cmd_format.c
@@ -102,16 +102,6 @@ static const struct option format_opts[] = {
};
#undef x
-u64 read_flag_list_or_die(char *opt, const char * const list[],
- const char *msg)
-{
- u64 v = bch2_read_flag_list(opt, list);
- if (v == (u64) -1)
- die("Bad %s %s", msg, opt);
-
- return v;
-}
-
static void build_fs(struct bch_fs *c, const char *src_path)
{
struct copy_fs_state s = {};
@@ -318,307 +308,3 @@ int cmd_format(int argc, char *argv[])
darray_exit(&device_paths);
return 0;
}
-
-static void show_super_usage(void)
-{
- puts("bcachefs show-super \n"
- "Usage: bcachefs show-super [OPTION].. device\n"
- "\n"
- "Options:\n"
- " -f, --fields=(fields) list of sections to print\n"
- " --field-only=fiel) print superblock section only, no header\n"
- " -l, --layout print superblock layout\n"
- " -h, --help display this help and exit\n"
- "Report bugs to <linux-bcachefs@vger.kernel.org>");
- exit(EXIT_SUCCESS);
-}
-
-int cmd_show_super(int argc, char *argv[])
-{
- static const struct option longopts[] = {
- { "fields", 1, NULL, 'f' },
- { "field-only", 1, NULL, 'F' },
- { "layout", 0, NULL, 'l' },
- { "help", 0, NULL, 'h' },
- { NULL }
- };
- unsigned fields = 0;
- int field_only = -1;
- bool print_layout = false;
- bool print_default_fields = true;
- int opt;
-
- while ((opt = getopt_long(argc, argv, "f:lh", longopts, NULL)) != -1)
- switch (opt) {
- case 'f':
- fields = !strcmp(optarg, "all")
- ? ~0
- : read_flag_list_or_die(optarg,
- bch2_sb_fields, "superblock field");
- print_default_fields = false;
- break;
- case 'F':
- field_only = read_string_list_or_die(optarg,
- bch2_sb_fields, "superblock field");
- print_default_fields = false;
- break;
- case 'l':
- print_layout = true;
- break;
- case 'h':
- show_super_usage();
- break;
- }
- args_shift(optind);
-
- char *dev = arg_pop();
- if (!dev)
- die("please supply a device");
- if (argc)
- die("too many arguments");
-
- struct bch_opts opts = bch2_opts_empty();
-
- opt_set(opts, noexcl, true);
- opt_set(opts, nochanges, true);
-
- struct bch_sb_handle sb;
- int ret = bch2_read_super(dev, &opts, &sb);
- if (ret)
- die("Error opening %s: %s", dev, bch2_err_str(ret));
-
- if (print_default_fields) {
- fields |= bch2_sb_field_get(sb.sb, members_v2)
- ? 1 << BCH_SB_FIELD_members_v2
- : 1 << BCH_SB_FIELD_members_v1;
- fields |= 1 << BCH_SB_FIELD_errors;
- }
-
- struct printbuf buf = PRINTBUF;
-
- buf.human_readable_units = true;
-
- if (field_only >= 0) {
- struct bch_sb_field *f = bch2_sb_field_get_id(sb.sb, field_only);
-
- if (f)
- __bch2_sb_field_to_text(&buf, sb.sb, f);
- } else {
- printbuf_tabstop_push(&buf, 44);
-
- char *model = fd_to_dev_model(sb.bdev->bd_fd);
- prt_str(&buf, "Device:");
- prt_tab(&buf);
- prt_str(&buf, model);
- prt_newline(&buf);
- free(model);
-
- bch2_sb_to_text(&buf, sb.sb, print_layout, fields);
- }
- printf("%s", buf.buf);
-
- bch2_free_super(&sb);
- printbuf_exit(&buf);
- return 0;
-}
-
-#include "libbcachefs/super-io.h"
-#include "libbcachefs/sb-members.h"
-
-typedef DARRAY(struct bch_sb *) probed_sb_list;
-
-static void probe_one_super(int dev_fd, unsigned sb_size, u64 offset,
- probed_sb_list *sbs, bool verbose)
-{
- darray_char sb_buf = {};
- darray_resize(&sb_buf, sb_size);
-
- xpread(dev_fd, sb_buf.data, sb_buf.size, offset);
-
- struct printbuf err = PRINTBUF;
- int ret = bch2_sb_validate((void *) sb_buf.data, offset >> 9, 0, &err);
- printbuf_exit(&err);
-
- if (!ret) {
- if (verbose) {
- struct printbuf buf = PRINTBUF;
- prt_human_readable_u64(&buf, offset);
- printf("found superblock at %s\n", buf.buf);
- printbuf_exit(&buf);
- }
-
- darray_push(sbs, (void *) sb_buf.data);
- sb_buf.data = NULL;
- }
-
- darray_exit(&sb_buf);
-}
-
-static void probe_sb_range(int dev_fd, u64 start_offset, u64 end_offset,
- probed_sb_list *sbs, bool verbose)
-{
- start_offset &= ~((u64) 511);
- end_offset &= ~((u64) 511);
-
- size_t buflen = end_offset - start_offset;
- void *buf = malloc(buflen);
- xpread(dev_fd, buf, buflen, start_offset);
-
- for (u64 offset = 0; offset < buflen; offset += 512) {
- struct bch_sb *sb = buf + offset;
-
- if (!uuid_equal(&sb->magic, &BCACHE_MAGIC) &&
- !uuid_equal(&sb->magic, &BCHFS_MAGIC))
- continue;
-
- size_t bytes = vstruct_bytes(sb);
- if (offset + bytes > buflen) {
- fprintf(stderr, "found sb %llu size %zu that overran buffer\n",
- start_offset + offset, bytes);
- continue;
- }
- struct printbuf err = PRINTBUF;
- int ret = bch2_sb_validate(sb, (start_offset + offset) >> 9, 0, &err);
- if (ret)
- fprintf(stderr, "found sb %llu that failed to validate: %s\n",
- start_offset + offset, err.buf);
- printbuf_exit(&err);
-
- if (ret)
- continue;
-
- if (verbose) {
- struct printbuf buf = PRINTBUF;
- prt_human_readable_u64(&buf, start_offset + offset);
- printf("found superblock at %s\n", buf.buf);
- printbuf_exit(&buf);
- }
-
- void *sb_copy = malloc(bytes);
- memcpy(sb_copy, sb, bytes);
- darray_push(sbs, sb_copy);
- }
-
- free(buf);
-}
-
-static u64 bch2_sb_last_mount_time(struct bch_sb *sb)
-{
- u64 ret = 0;
- for (unsigned i = 0; i < sb->nr_devices; i++)
- ret = max(ret, le64_to_cpu(bch2_sb_member_get(sb, i).last_mount));
- return ret;
-}
-
-static int bch2_sb_time_cmp(struct bch_sb *l, struct bch_sb *r)
-{
- return cmp_int(bch2_sb_last_mount_time(l),
- bch2_sb_last_mount_time(r));
-}
-
-static void recover_super_usage(void)
-{
- puts("bcachefs recover-super \n"
- "Usage: bcachefs recover-super [OPTION].. device\n"
- "\n"
- "Attempt to recover a filesystem on a device that has had the main superblock\n"
- "and superblock layout overwritten.\n"
- "All options will be guessed if not provided\n"
- "\n"
- "Options:\n"
- " -d, --dev_size size of filessytem on device, in bytes \n"
- " -o, --offset offset to probe, in bytes\n"
- " -y, --yes Recover without prompting\n"
- " -v, --verbose Increase logging level\n"
- " -h, --help display this help and exit\n"
- "Report bugs to <linux-bcachefs@vger.kernel.org>");
- exit(EXIT_SUCCESS);
-}
-
-int cmd_recover_super(int argc, char *argv[])
-{
- static const struct option longopts[] = {
- { "dev_size", 1, NULL, 'd' },
- { "offset", 1, NULL, 'o' },
- { "yes", 0, NULL, 'y' },
- { "verbose", 0, NULL, 'v' },
- { "help", 0, NULL, 'h' },
- { NULL }
- };
- u64 dev_size = 0, offset = 0;
- bool yes = false, verbose = false;
- int opt;
-
- while ((opt = getopt_long(argc, argv, "d:o:yvh", longopts, NULL)) != -1)
- switch (opt) {
- case 'd':
- if (bch2_strtoull_h(optarg, &dev_size))
- die("invalid offset");
- break;
- case 'o':
- if (bch2_strtoull_h(optarg, &offset))
- die("invalid offset");
-
- if (offset & 511)
- die("offset must be a multiple of 512");
- break;
- case 'y':
- yes = true;
- break;
- case 'v':
- verbose = true;
- break;
- case 'h':
- recover_super_usage();
- break;
- }
- args_shift(optind);
-
- char *dev_path = arg_pop();
- if (!dev_path)
- die("please supply a device");
- if (argc)
- die("too many arguments");
-
- int dev_fd = xopen(dev_path, O_RDWR);
-
- if (!dev_size)
- dev_size = get_size(dev_fd);
-
- probed_sb_list sbs = {};
-
- if (offset) {
- probe_one_super(dev_fd, SUPERBLOCK_SIZE_DEFAULT, offset, &sbs, verbose);
- } else {
- unsigned scan_len = 16 << 20; /* 16MB, start and end of device */
-
- probe_sb_range(dev_fd, 4096, scan_len, &sbs, verbose);
- probe_sb_range(dev_fd, dev_size - scan_len, dev_size, &sbs, verbose);
- }
-
- if (!sbs.nr) {
- printf("Found no bcachefs superblocks\n");
- exit(EXIT_FAILURE);
- }
-
- struct bch_sb *best = NULL;
- darray_for_each(sbs, sb)
- if (!best || bch2_sb_time_cmp(best, *sb) < 0)
- best = *sb;
-
- struct printbuf buf = PRINTBUF;
- bch2_sb_to_text(&buf, best, true, BIT_ULL(BCH_SB_FIELD_members_v2));
-
- printf("Found superblock:\n%s", buf.buf);
- printf("Recover?");
-
- if (yes || ask_yn())
- bch2_super_write(dev_fd, best);
-
- printbuf_exit(&buf);
- darray_for_each(sbs, sb)
- kfree(*sb);
- darray_exit(&sbs);
-
- return 0;
-}
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