X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=sha1_file.c;h=445a871db31673af20017d36ff22fd106f77f510;hb=686bc52a897abfa2497c8f137f06e44c8e559659;hp=f007874cbb034ec9efa7f73c42831e0037d452fa;hpb=2ce1a1f23fd83d2cab22f87aff1165fb0c7ad450;p=git.git diff --git a/sha1_file.c b/sha1_file.c index f007874cb..445a871db 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -14,6 +14,7 @@ #include "tag.h" #include "tree.h" #include "refs.h" +#include "pack-revindex.h" #ifndef O_NOATIME #if defined(__linux__) && (defined(__i386__) || defined(__PPC__)) @@ -25,8 +26,10 @@ #ifdef NO_C99_FORMAT #define SZ_FMT "lu" +static unsigned long sz_fmt(size_t s) { return (unsigned long)s; } #else #define SZ_FMT "zu" +static size_t sz_fmt(size_t s) { return s; } #endif const unsigned char null_sha1[20]; @@ -86,7 +89,7 @@ int safe_create_leading_directories(char *path) char *pos = path; struct stat st; - if (*pos == '/') + if (is_absolute_path(path)) pos++; while (pos) { @@ -146,7 +149,7 @@ static void fill_sha1_path(char *pathbuf, const unsigned char *sha1) /* * NOTE! This returns a statically allocated buffer, so you have to be - * careful about using it. Do a "xstrdup()" if you need to save the + * careful about using it. Do an "xstrdup()" if you need to save the * filename. * * Also note that this returns the location for creating. Reading @@ -253,7 +256,7 @@ static int link_alt_odb_entry(const char * entry, int len, const char * relative int entlen = pfxlen + 43; int base_len = -1; - if (*entry != '/' && relative_base) { + if (!is_absolute_path(entry) && relative_base) { /* Relative alt-odb */ if (base_len < 0) base_len = strlen(relative_base) + 1; @@ -262,7 +265,7 @@ static int link_alt_odb_entry(const char * entry, int len, const char * relative } ent = xmalloc(sizeof(*ent) + entlen); - if (*entry != '/' && relative_base) { + if (!is_absolute_path(entry) && relative_base) { memcpy(ent->base, relative_base, base_len - 1); ent->base[base_len - 1] = '/'; memcpy(ent->base + base_len, entry, len); @@ -333,7 +336,7 @@ static void link_alt_odb_entries(const char *alt, const char *ep, int sep, while (cp < ep && *cp != sep) cp++; if (last != cp) { - if ((*last != '/') && depth) { + if (!is_absolute_path(last) && depth) { error("%s: ignoring relative alternate object store %s", relative_base, last); } else { @@ -423,9 +426,9 @@ void pack_report(void) "pack_report: getpagesize() = %10" SZ_FMT "\n" "pack_report: core.packedGitWindowSize = %10" SZ_FMT "\n" "pack_report: core.packedGitLimit = %10" SZ_FMT "\n", - (size_t) getpagesize(), - packed_git_window_size, - packed_git_limit); + sz_fmt(getpagesize()), + sz_fmt(packed_git_window_size), + sz_fmt(packed_git_limit)); fprintf(stderr, "pack_report: pack_used_ctr = %10u\n" "pack_report: pack_mmap_calls = %10u\n" @@ -435,7 +438,7 @@ void pack_report(void) pack_used_ctr, pack_mmap_calls, pack_open_windows, peak_pack_open_windows, - pack_mapped, peak_pack_mapped); + sz_fmt(pack_mapped), sz_fmt(peak_pack_mapped)); } static int check_packed_git_idx(const char *path, struct packed_git *p) @@ -609,6 +612,22 @@ void release_pack_memory(size_t need, int fd) ; /* nothing */ } +void close_pack_windows(struct packed_git *p) +{ + while (p->windows) { + struct pack_window *w = p->windows; + + if (w->inuse_cnt) + die("pack '%s' still has open windows to it", + p->pack_name); + munmap(w->base, w->len); + pack_mapped -= w->len; + pack_open_windows--; + p->windows = w->next; + free(w); + } +} + void unuse_pack(struct pack_window **w_cursor) { struct pack_window *w = *w_cursor; @@ -1349,11 +1368,15 @@ const char *packed_object_info_detail(struct packed_git *p, unsigned long dummy; unsigned char *next_sha1; enum object_type type; + struct revindex_entry *revidx; *delta_chain_length = 0; curpos = obj_offset; type = unpack_object_header(p, &w_curs, &curpos, size); + revidx = find_pack_revindex(p, obj_offset); + *store_size = revidx[1].offset - obj_offset; + for (;;) { switch (type) { default: @@ -1363,14 +1386,13 @@ const char *packed_object_info_detail(struct packed_git *p, case OBJ_TREE: case OBJ_BLOB: case OBJ_TAG: - *store_size = 0; /* notyet */ unuse_pack(&w_curs); return typename(type); case OBJ_OFS_DELTA: obj_offset = get_delta_base(p, &w_curs, &curpos, type, obj_offset); if (*delta_chain_length == 0) { - /* TODO: find base_sha1 as pointed by curpos */ - hashclr(base_sha1); + revidx = find_pack_revindex(p, obj_offset); + hashcpy(base_sha1, nth_packed_object_sha1(p, revidx->nr)); } break; case OBJ_REF_DELTA: @@ -1827,6 +1849,15 @@ static struct cached_object { } *cached_objects; static int cached_object_nr, cached_object_alloc; +static struct cached_object empty_tree = { + /* empty tree sha1: 4b825dc642cb6eb9a060e54bf8d69288fbee4904 */ + "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" + "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04", + OBJ_TREE, + "", + 0 +}; + static struct cached_object *find_cached_object(const unsigned char *sha1) { int i; @@ -1836,6 +1867,8 @@ static struct cached_object *find_cached_object(const unsigned char *sha1) if (!hashcmp(co->sha1, sha1)) return co; } + if (!hashcmp(sha1, empty_tree.sha1)) + return &empty_tree; return NULL; } @@ -1925,7 +1958,8 @@ void *read_object_with_reference(const unsigned char *sha1, } ref_length = strlen(ref_type); - if (memcmp(buffer, ref_type, ref_length) || + if (ref_length + 40 > isize || + memcmp(buffer, ref_type, ref_length) || get_sha1_hex((char *) buffer + ref_length, actual_sha1)) { free(buffer); return NULL; @@ -2340,7 +2374,8 @@ int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, if ((type == OBJ_BLOB) && S_ISREG(st->st_mode)) { struct strbuf nbuf; strbuf_init(&nbuf, 0); - if (convert_to_git(path, buf, size, &nbuf)) { + if (convert_to_git(path, buf, size, &nbuf, + write_object ? safe_crlf : 0)) { munmap(buf, size); buf = strbuf_detach(&nbuf, &size); re_allocated = 1;