From 8a498a05c3c6b2f53db669b24f36257ab213eb4c Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Tue, 28 Jun 2005 14:58:33 -0700 Subject: [PATCH] Update fsck-cache (take 2) The fsck-cache complains if objects referred to by files in .git/refs/ or objects stored in files under .git/objects/??/ are not found as stand-alone SHA1 files (i.e. found in alternate object pools GIT_ALTERNATE_OBJECT_DIRECTORIES or packed archives stored under .git/objects/pack). Although this is a good semantics to maintain consistency of a single .git/objects directory as a self contained set of objects, it sometimes is useful to consider it is OK as long as these "outside" objects are available. This commit introduces a new flag, --standalone, to git-fsck-cache. When it is not specified, connectivity checks and .git/refs pointer checks are taught that it is OK when expected objects do not exist under .git/objects/?? hierarchy but are available from an packed archive or in an alternate object pool. Another new flag, --full, makes git-fsck-cache to check not only the current GIT_OBJECT_DIRECTORY but also objects found in alternate object pools and packed GIT archives.a Signed-off-by: Junio C Hamano Signed-off-by: Linus Torvalds --- fsck-cache.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 59 insertions(+), 12 deletions(-) (limited to 'fsck-cache.c') diff --git a/fsck-cache.c b/fsck-cache.c index 916792417d..eae73cc18b 100644 --- a/fsck-cache.c +++ b/fsck-cache.c @@ -12,6 +12,8 @@ static int show_root = 0; static int show_tags = 0; static int show_unreachable = 0; +static int standalone = 0; +static int check_full = 0; static int keep_cache_objects = 0; static unsigned char head_sha1[20]; @@ -25,13 +27,17 @@ static void check_connectivity(void) struct object_list *refs; if (!obj->parsed) { - printf("missing %s %s\n", - obj->type, sha1_to_hex(obj->sha1)); + if (!standalone && has_sha1_file(obj->sha1)) + ; /* it is in pack */ + else + printf("missing %s %s\n", + obj->type, sha1_to_hex(obj->sha1)); continue; } for (refs = obj->refs; refs; refs = refs->next) { - if (refs->item->parsed) + if (refs->item->parsed || + (!standalone && has_sha1_file(refs->item->sha1))) continue; printf("broken link from %7s %s\n", obj->type, sha1_to_hex(obj->sha1)); @@ -315,8 +321,11 @@ static int read_sha1_reference(const char *path) return -1; obj = lookup_object(sha1); - if (!obj) + if (!obj) { + if (!standalone && has_sha1_file(sha1)) + return 0; /* it is in pack */ return error("%s: invalid sha1 pointer %.40s", path, hexname); + } obj->used = 1; mark_reachable(obj, REACHABLE); @@ -366,10 +375,20 @@ static void get_default_heads(void) die("No default references"); } +static void fsck_object_dir(const char *path) +{ + int i; + for (i = 0; i < 256; i++) { + static char dir[4096]; + sprintf(dir, "%s/%02x", path, i); + fsck_dir(i, dir); + } + fsck_sha1_list(); +} + int main(int argc, char **argv) { int i, heads; - char *sha1_dir; for (i = 1; i < argc; i++) { const char *arg = argv[i]; @@ -390,17 +409,45 @@ int main(int argc, char **argv) keep_cache_objects = 1; continue; } + if (!strcmp(arg, "--standalone")) { + standalone = 1; + continue; + } + if (!strcmp(arg, "--full")) { + check_full = 1; + continue; + } if (*arg == '-') - usage("git-fsck-cache [--tags] [[--unreachable] [--cache] *]"); + usage("git-fsck-cache [--tags] [[--unreachable] [--cache] [--standalone | --full] *]"); } - sha1_dir = get_object_directory(); - for (i = 0; i < 256; i++) { - static char dir[4096]; - sprintf(dir, "%s/%02x", sha1_dir, i); - fsck_dir(i, dir); + if (standalone && check_full) + die("Only one of --standalone or --full can be used."); + if (standalone) + unsetenv("GIT_ALTERNATE_OBJECT_DIRECTORIES"); + + fsck_object_dir(get_object_directory()); + if (check_full) { + int j; + struct packed_git *p; + prepare_alt_odb(); + for (j = 0; alt_odb[j].base; j++) { + alt_odb[j].name[-1] = 0; /* was slash */ + fsck_object_dir(alt_odb[j].base); + alt_odb[j].name[-1] = '/'; + } + prepare_packed_git(); + for (p = packed_git; p; p = p->next) { + int num = num_packed_objects(p); + for (i = 0; i < num; i++) { + unsigned char sha1[20]; + nth_packed_object_sha1(p, i, sha1); + if (fsck_sha1(sha1) < 0) + fprintf(stderr, "bad sha1 entry '%s'\n", sha1_to_hex(sha1)); + + } + } } - fsck_sha1_list(); heads = 0; for (i = 1; i < argc; i++) { -- cgit v1.2.3