diff options
Diffstat (limited to 'builtin/verify-pack.c')
| -rw-r--r-- | builtin/verify-pack.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/builtin/verify-pack.c b/builtin/verify-pack.c new file mode 100644 index 0000000..b6079ae --- /dev/null +++ b/builtin/verify-pack.c @@ -0,0 +1,166 @@ +#include "builtin.h" +#include "cache.h" +#include "pack.h" +#include "pack-revindex.h" +#include "parse-options.h" + +#define MAX_CHAIN 50 + +#define VERIFY_PACK_VERBOSE 01 +#define VERIFY_PACK_STAT_ONLY 02 + +static void show_pack_info(struct packed_git *p, unsigned int flags) +{ + uint32_t nr_objects, i; + int cnt; + int stat_only = flags & VERIFY_PACK_STAT_ONLY; + unsigned long chain_histogram[MAX_CHAIN+1], baseobjects; + + nr_objects = p->num_objects; + memset(chain_histogram, 0, sizeof(chain_histogram)); + baseobjects = 0; + + for (i = 0; i < nr_objects; i++) { + const unsigned char *sha1; + unsigned char base_sha1[20]; + const char *type; + unsigned long size; + unsigned long store_size; + off_t offset; + unsigned int delta_chain_length; + + sha1 = nth_packed_object_sha1(p, i); + if (!sha1) + die("internal error pack-check nth-packed-object"); + offset = nth_packed_object_offset(p, i); + type = packed_object_info_detail(p, offset, &size, &store_size, + &delta_chain_length, + base_sha1); + if (!stat_only) + printf("%s ", sha1_to_hex(sha1)); + if (!delta_chain_length) { + if (!stat_only) + printf("%-6s %lu %lu %"PRIuMAX"\n", + type, size, store_size, (uintmax_t)offset); + baseobjects++; + } + else { + if (!stat_only) + printf("%-6s %lu %lu %"PRIuMAX" %u %s\n", + type, size, store_size, (uintmax_t)offset, + delta_chain_length, sha1_to_hex(base_sha1)); + if (delta_chain_length <= MAX_CHAIN) + chain_histogram[delta_chain_length]++; + else + chain_histogram[0]++; + } + } + + if (baseobjects) + printf("non delta: %lu object%s\n", + baseobjects, baseobjects > 1 ? "s" : ""); + + for (cnt = 1; cnt <= MAX_CHAIN; cnt++) { + if (!chain_histogram[cnt]) + continue; + printf("chain length = %d: %lu object%s\n", cnt, + chain_histogram[cnt], + chain_histogram[cnt] > 1 ? "s" : ""); + } + if (chain_histogram[0]) + printf("chain length > %d: %lu object%s\n", MAX_CHAIN, + chain_histogram[0], + chain_histogram[0] > 1 ? "s" : ""); +} + +static int verify_one_pack(const char *path, unsigned int flags) +{ + char arg[PATH_MAX]; + int len; + int verbose = flags & VERIFY_PACK_VERBOSE; + int stat_only = flags & VERIFY_PACK_STAT_ONLY; + struct packed_git *pack; + int err; + + len = strlcpy(arg, path, PATH_MAX); + if (len >= PATH_MAX) + return error("name too long: %s", path); + + /* + * In addition to "foo.idx" we accept "foo.pack" and "foo"; + * normalize these forms to "foo.idx" for add_packed_git(). + */ + if (has_extension(arg, ".pack")) { + strcpy(arg + len - 5, ".idx"); + len--; + } else if (!has_extension(arg, ".idx")) { + if (len + 4 >= PATH_MAX) + return error("name too long: %s.idx", arg); + strcpy(arg + len, ".idx"); + len += 4; + } + + /* + * add_packed_git() uses our buffer (containing "foo.idx") to + * build the pack filename ("foo.pack"). Make sure it fits. + */ + if (len + 1 >= PATH_MAX) { + arg[len - 4] = '\0'; + return error("name too long: %s.pack", arg); + } + + pack = add_packed_git(arg, len, 1); + if (!pack) + return error("packfile %s not found.", arg); + + install_packed_git(pack); + + if (!stat_only) + err = verify_pack(pack); + else + err = open_pack_index(pack); + + if (verbose || stat_only) { + if (err) + printf("%s: bad\n", pack->pack_name); + else { + show_pack_info(pack, flags); + if (!stat_only) + printf("%s: ok\n", pack->pack_name); + } + } + + return err; +} + +static const char * const verify_pack_usage[] = { + "git verify-pack [-v|--verbose] [-s|--stat-only] <pack>...", + NULL +}; + +int cmd_verify_pack(int argc, const char **argv, const char *prefix) +{ + int err = 0; + unsigned int flags = 0; + int i; + const struct option verify_pack_options[] = { + OPT_BIT('v', "verbose", &flags, "verbose", + VERIFY_PACK_VERBOSE), + OPT_BIT('s', "stat-only", &flags, "show statistics only", + VERIFY_PACK_STAT_ONLY), + OPT_END() + }; + + git_config(git_default_config, NULL); + argc = parse_options(argc, argv, prefix, verify_pack_options, + verify_pack_usage, 0); + if (argc < 1) + usage_with_options(verify_pack_usage, verify_pack_options); + for (i = 0; i < argc; i++) { + if (verify_one_pack(argv[i], flags)) + err = 1; + discard_revindex(); + } + + return err; +} |