--- /dev/null
+/*
+ * Authors: Kent Overstreet <kent.overstreet@gmail.com>
+ * Gabriel de Perthuis <g2p.code@gmail.com>
+ * Jacob Malevich <jam@datera.io>
+ *
+ * GPLv2
+ */
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <uuid/uuid.h>
+
+#include "cmds.h"
+#include "libbcachefs.h"
+#include "crypto.h"
+#include "libbcachefs/darray.h"
+#include "libbcachefs/errcode.h"
+#include "libbcachefs/opts.h"
+#include "libbcachefs/super-io.h"
+#include "libbcachefs/util.h"
+
+#define OPTS \
+x(0, replicas, required_argument) \
+x(0, encrypted, no_argument) \
+x(0, no_passphrase, no_argument) \
+x('L', fs_label, required_argument) \
+x('U', uuid, required_argument) \
+x(0, fs_size, required_argument) \
+x(0, superblock_size, required_argument) \
+x(0, bucket_size, required_argument) \
+x('l', label, required_argument) \
+x(0, discard, no_argument) \
+x(0, data_allowed, required_argument) \
+x(0, durability, required_argument) \
+x(0, version, required_argument) \
+x(0, no_initialize, no_argument) \
+x('f', force, no_argument) \
+x('q', quiet, no_argument) \
+x('v', verbose, no_argument) \
+x('h', help, no_argument)
+
+static void usage(void)
+{
+ puts("bcachefs format - create a new bcachefs filesystem on one or more devices\n"
+ "Usage: bcachefs format [OPTION]... <devices>\n"
+ "\n"
+ "Options:");
+
+ bch2_opts_usage(OPT_FORMAT);
+
+ puts(
+ " --replicas=# Sets both data and metadata replicas\n"
+ " --encrypted Enable whole filesystem encryption (chacha20/poly1305)\n"
+ " --no_passphrase Don't encrypt master encryption key\n"
+ " -L, --fs_label=label\n"
+ " -U, --uuid=uuid\n"
+ " --superblock_size=size\n"
+ "\n"
+ "Device specific options:");
+
+ bch2_opts_usage(OPT_DEVICE);
+
+ puts(" -l, --label=label Disk label\n"
+ "\n"
+ " -f, --force\n"
+ " -q, --quiet Only print errors\n"
+ " -v, --verbose Verbose filesystem initialization\n"
+ " -h, --help Display this help and exit\n"
+ "\n"
+ "Device specific options must come before corresponding devices, e.g.\n"
+ " bcachefs format --label cache /dev/sdb /dev/sdc\n"
+ "\n"
+ "Report bugs to <linux-bcachefs@vger.kernel.org>");
+}
+
+enum {
+ O_no_opt = 1,
+#define x(shortopt, longopt, arg) O_##longopt,
+ OPTS
+#undef x
+};
+
+#define x(shortopt, longopt, arg) { \
+ .name = #longopt, \
+ .has_arg = arg, \
+ .flag = NULL, \
+ .val = O_##longopt, \
+},
+static const struct option format_opts[] = {
+ OPTS
+ { NULL }
+};
+#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;
+}
+
+int cmd_format(int argc, char *argv[])
+{
+ DARRAY(struct dev_opts) devices = { 0 };
+ DARRAY(char *) device_paths = { 0 };
+ struct format_opts opts = format_opts_default();
+ struct dev_opts dev_opts = dev_opts_default();
+ bool force = false, no_passphrase = false, quiet = false, initialize = true, verbose = false;
+ bool unconsumed_dev_option = false;
+ unsigned v;
+ int opt;
+
+ struct bch_opt_strs fs_opt_strs =
+ bch2_cmdline_opts_get(&argc, argv, OPT_FORMAT);
+ struct bch_opts fs_opts = bch2_parse_opts(fs_opt_strs);
+
+ while ((opt = getopt_long(argc, argv,
+ "-L:U:g:fqhv",
+ format_opts,
+ NULL)) != -1)
+ switch (opt) {
+ case O_replicas:
+ if (kstrtouint(optarg, 10, &v) ||
+ !v ||
+ v > BCH_REPLICAS_MAX)
+ die("invalid replicas");
+
+ opt_set(fs_opts, metadata_replicas, v);
+ opt_set(fs_opts, data_replicas, v);
+ break;
+ case O_encrypted:
+ opts.encrypted = true;
+ break;
+ case O_no_passphrase:
+ no_passphrase = true;
+ break;
+ case O_fs_label:
+ case 'L':
+ opts.label = optarg;
+ break;
+ case O_uuid:
+ case 'U':
+ if (uuid_parse(optarg, opts.uuid.b))
+ die("Bad uuid");
+ break;
+ case O_force:
+ case 'f':
+ force = true;
+ break;
+ case O_fs_size:
+ if (bch2_strtoull_h(optarg, &dev_opts.size))
+ die("invalid filesystem size");
+ unconsumed_dev_option = true;
+ break;
+ case O_superblock_size:
+ if (bch2_strtouint_h(optarg, &opts.superblock_size))
+ die("invalid filesystem size");
+
+ opts.superblock_size >>= 9;
+ break;
+ case O_bucket_size:
+ if (bch2_strtoull_h(optarg, &dev_opts.bucket_size))
+ die("bad bucket_size %s", optarg);
+ unconsumed_dev_option = true;
+ break;
+ case O_label:
+ case 'l':
+ dev_opts.label = optarg;
+ unconsumed_dev_option = true;
+ break;
+ case O_discard:
+ dev_opts.discard = true;
+ unconsumed_dev_option = true;
+ break;
+ case O_data_allowed:
+ dev_opts.data_allowed =
+ read_flag_list_or_die(optarg,
+ bch2_data_types, "data type");
+ unconsumed_dev_option = true;
+ break;
+ case O_durability:
+ if (kstrtouint(optarg, 10, &dev_opts.durability) ||
+ dev_opts.durability > BCH_REPLICAS_MAX)
+ die("invalid durability");
+ unconsumed_dev_option = true;
+ break;
+ case O_version:
+ if (kstrtouint(optarg, 10, &opts.version))
+ die("invalid version");
+ break;
+ case O_no_initialize:
+ initialize = false;
+ break;
+ case O_no_opt:
+ darray_push(&device_paths, optarg);
+ dev_opts.path = optarg;
+ darray_push(&devices, dev_opts);
+ dev_opts.size = 0;
+ unconsumed_dev_option = false;
+ break;
+ case O_quiet:
+ case 'q':
+ quiet = true;
+ break;
+ case 'v':
+ verbose = true;
+ case O_help:
+ case 'h':
+ usage();
+ exit(EXIT_SUCCESS);
+ break;
+ case '?':
+ exit(EXIT_FAILURE);
+ break;
+ }
+
+ if (unconsumed_dev_option)
+ die("Options for devices apply to subsequent devices; got a device option with no device");
+
+ if (opts.version != bcachefs_metadata_version_current)
+ initialize = false;
+
+ if (!devices.nr)
+ die("Please supply a device");
+
+ if (opts.encrypted && !no_passphrase) {
+ opts.passphrase = read_passphrase_twice("Enter passphrase: ");
+ initialize = false;
+ }
+
+ darray_for_each(devices, dev) {
+ int ret = open_for_format(dev, force);
+ if (ret)
+ die("Error opening %s: %s", dev_opts.path, strerror(-ret));
+ }
+
+ struct bch_sb *sb =
+ bch2_format(fs_opt_strs,
+ fs_opts,
+ opts,
+ devices.data, devices.nr);
+ bch2_opt_strs_free(&fs_opt_strs);
+
+ if (!quiet) {
+ struct printbuf buf = PRINTBUF;
+
+ buf.human_readable_units = true;
+
+ bch2_sb_to_text(&buf, sb, false, 1 << BCH_SB_FIELD_members_v2);
+ printf("%s", buf.buf);
+
+ printbuf_exit(&buf);
+ }
+ free(sb);
+
+ if (opts.passphrase) {
+ memzero_explicit(opts.passphrase, strlen(opts.passphrase));
+ free(opts.passphrase);
+ }
+
+ darray_exit(&devices);
+
+ if (initialize) {
+ struct bch_opts mount_opts = bch2_opts_empty();
+
+
+ opt_set(mount_opts, verbose, verbose);
+
+ /*
+ * Start the filesystem once, to allocate the journal and create
+ * the root directory:
+ */
+ struct bch_fs *c = bch2_fs_open(device_paths.data,
+ device_paths.nr,
+ mount_opts);
+ if (IS_ERR(c))
+ die("error opening %s: %s", device_paths.data[0],
+ bch2_err_str(PTR_ERR(c)));
+
+ bch2_fs_stop(c);
+ }
+
+ 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 {
+ bch2_sb_to_text(&buf, sb.sb, print_layout, fields);
+ }
+ printf("%s", buf.buf);
+
+ bch2_free_super(&sb);
+ printbuf_exit(&buf);
+ return 0;
+}
projects / bcachefs-tools-debian / blobdiff