diff options
Diffstat (limited to 'sha1_file.c')
| -rw-r--r-- | sha1_file.c | 200 |
1 files changed, 192 insertions, 8 deletions
diff --git a/sha1_file.c b/sha1_file.c index aaa3c52869..30995e61b3 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -8,6 +8,7 @@ */ #include "cache.h" #include "string-list.h" +#include "lockfile.h" #include "delta.h" #include "pack.h" #include "blob.h" @@ -442,27 +443,53 @@ void prepare_alt_odb(void) read_info_alternates(get_object_directory(), 0); } -static int has_loose_object_local(const unsigned char *sha1) +static int freshen_file(const char *fn) { - return !access(sha1_file_name(sha1), F_OK); + struct utimbuf t; + t.actime = t.modtime = time(NULL); + return !utime(fn, &t); } -int has_loose_object_nonlocal(const unsigned char *sha1) +static int check_and_freshen_file(const char *fn, int freshen) +{ + if (access(fn, F_OK)) + return 0; + if (freshen && freshen_file(fn)) + return 0; + return 1; +} + +static int check_and_freshen_local(const unsigned char *sha1, int freshen) +{ + return check_and_freshen_file(sha1_file_name(sha1), freshen); +} + +static int check_and_freshen_nonlocal(const unsigned char *sha1, int freshen) { struct alternate_object_database *alt; prepare_alt_odb(); for (alt = alt_odb_list; alt; alt = alt->next) { fill_sha1_path(alt->name, sha1); - if (!access(alt->base, F_OK)) + if (check_and_freshen_file(alt->base, freshen)) return 1; } return 0; } +static int check_and_freshen(const unsigned char *sha1, int freshen) +{ + return check_and_freshen_local(sha1, freshen) || + check_and_freshen_nonlocal(sha1, freshen); +} + +int has_loose_object_nonlocal(const unsigned char *sha1) +{ + return check_and_freshen_nonlocal(sha1, 0); +} + static int has_loose_object(const unsigned char *sha1) { - return has_loose_object_local(sha1) || - has_loose_object_nonlocal(sha1); + return check_and_freshen(sha1, 0); } static unsigned int pack_used_ctr; @@ -1171,7 +1198,7 @@ static void report_pack_garbage(struct string_list *list) if (!report_garbage) return; - sort_string_list(list); + string_list_sort(list); for (i = 0; i < list->nr; i++) { const char *path = list->items[i].string; @@ -2965,6 +2992,17 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen, return move_temp_to_file(tmp_file, filename); } +static int freshen_loose_object(const unsigned char *sha1) +{ + return check_and_freshen(sha1, 1); +} + +static int freshen_packed_object(const unsigned char *sha1) +{ + struct pack_entry e; + return find_pack_entry(sha1, &e) && freshen_file(e.p->pack_name); +} + int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *returnsha1) { unsigned char sha1[20]; @@ -2977,7 +3015,7 @@ int write_sha1_file(const void *buf, unsigned long len, const char *type, unsign write_sha1_file_prepare(buf, len, type, sha1, hdr, &hdrlen); if (returnsha1) hashcpy(returnsha1, sha1); - if (has_sha1_file(sha1)) + if (freshen_loose_object(sha1) || freshen_packed_object(sha1)) return 0; return write_loose_object(sha1, hdr, hdrlen, buf, len, 0); } @@ -3264,3 +3302,149 @@ void assert_sha1_type(const unsigned char *sha1, enum object_type expect) die("%s is not a valid '%s' object", sha1_to_hex(sha1), typename(expect)); } + +static int for_each_file_in_obj_subdir(int subdir_nr, + struct strbuf *path, + each_loose_object_fn obj_cb, + each_loose_cruft_fn cruft_cb, + each_loose_subdir_fn subdir_cb, + void *data) +{ + size_t baselen = path->len; + DIR *dir = opendir(path->buf); + struct dirent *de; + int r = 0; + + if (!dir) { + if (errno == ENOENT) + return 0; + return error("unable to open %s: %s", path->buf, strerror(errno)); + } + + while ((de = readdir(dir))) { + if (is_dot_or_dotdot(de->d_name)) + continue; + + strbuf_setlen(path, baselen); + strbuf_addf(path, "/%s", de->d_name); + + if (strlen(de->d_name) == 38) { + char hex[41]; + unsigned char sha1[20]; + + snprintf(hex, sizeof(hex), "%02x%s", + subdir_nr, de->d_name); + if (!get_sha1_hex(hex, sha1)) { + if (obj_cb) { + r = obj_cb(sha1, path->buf, data); + if (r) + break; + } + continue; + } + } + + if (cruft_cb) { + r = cruft_cb(de->d_name, path->buf, data); + if (r) + break; + } + } + strbuf_setlen(path, baselen); + + if (!r && subdir_cb) + r = subdir_cb(subdir_nr, path->buf, data); + + closedir(dir); + return r; +} + +int for_each_loose_file_in_objdir(const char *path, + each_loose_object_fn obj_cb, + each_loose_cruft_fn cruft_cb, + each_loose_subdir_fn subdir_cb, + void *data) +{ + struct strbuf buf = STRBUF_INIT; + size_t baselen; + int r = 0; + int i; + + strbuf_addstr(&buf, path); + strbuf_addch(&buf, '/'); + baselen = buf.len; + + for (i = 0; i < 256; i++) { + strbuf_addf(&buf, "%02x", i); + r = for_each_file_in_obj_subdir(i, &buf, obj_cb, cruft_cb, + subdir_cb, data); + strbuf_setlen(&buf, baselen); + if (r) + break; + } + + strbuf_release(&buf); + return r; +} + +struct loose_alt_odb_data { + each_loose_object_fn *cb; + void *data; +}; + +static int loose_from_alt_odb(struct alternate_object_database *alt, + void *vdata) +{ + struct loose_alt_odb_data *data = vdata; + return for_each_loose_file_in_objdir(alt->base, + data->cb, NULL, NULL, + data->data); +} + +int for_each_loose_object(each_loose_object_fn cb, void *data) +{ + struct loose_alt_odb_data alt; + int r; + + r = for_each_loose_file_in_objdir(get_object_directory(), + cb, NULL, NULL, data); + if (r) + return r; + + alt.cb = cb; + alt.data = data; + return foreach_alt_odb(loose_from_alt_odb, &alt); +} + +static int for_each_object_in_pack(struct packed_git *p, each_packed_object_fn cb, void *data) +{ + uint32_t i; + int r = 0; + + for (i = 0; i < p->num_objects; i++) { + const unsigned char *sha1 = nth_packed_object_sha1(p, i); + + if (!sha1) + return error("unable to get sha1 of object %u in %s", + i, p->pack_name); + + r = cb(sha1, p, i, data); + if (r) + break; + } + return r; +} + +int for_each_packed_object(each_packed_object_fn cb, void *data) +{ + struct packed_git *p; + int r = 0; + + prepare_packed_git(); + for (p = packed_git; p; p = p->next) { + r = for_each_object_in_pack(p, cb, data); + if (r) + break; + } + return r; +} |