return 0;
}
-static int get_sha1_file(const char *path, unsigned char *result)
-{
- char buffer[60];
- int fd = open(path, O_RDONLY);
- int len;
-
- if (fd < 0)
- return -1;
- len = read(fd, buffer, sizeof(buffer));
- close(fd);
- if (len < 40)
- return -1;
- return get_sha1_hex(buffer, result);
-}
-
-static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir;
+static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
+ *git_graft_file;
static void setup_git_env(void)
{
git_dir = gitenv(GIT_DIR_ENVIRONMENT);
git_index_file = xmalloc(strlen(git_dir) + 7);
sprintf(git_index_file, "%s/index", git_dir);
}
+ git_graft_file = gitenv(GRAFT_ENVIRONMENT);
+ if (!git_graft_file)
+ git_graft_file = strdup(git_path("info/grafts"));
}
char *get_object_directory(void)
return git_index_file;
}
+char *get_graft_file(void)
+{
+ if (!git_graft_file)
+ setup_git_env();
+ return git_graft_file;
+}
+
int safe_create_leading_directories(char *path)
{
char *pos = path;
return 0;
}
-int get_sha1(const char *str, unsigned char *sha1)
-{
- static const char *prefix[] = {
- "",
- "refs",
- "refs/tags",
- "refs/heads",
- "refs/snap",
- NULL
- };
- const char **p;
-
- if (!get_sha1_hex(str, sha1))
- return 0;
-
- for (p = prefix; *p; p++) {
- char * pathname = git_path("%s/%s", *p, str);
- if (!get_sha1_file(pathname, sha1))
- return 0;
- }
-
- return -1;
-}
-
char * sha1_to_hex(const unsigned char *sha1)
{
static char buffer[50];
return base;
}
+char *sha1_pack_name(const unsigned char *sha1)
+{
+ static const char hex[] = "0123456789abcdef";
+ static char *name, *base, *buf;
+ int i;
+
+ if (!base) {
+ const char *sha1_file_directory = get_object_directory();
+ int len = strlen(sha1_file_directory);
+ base = xmalloc(len + 60);
+ sprintf(base, "%s/pack/pack-1234567890123456789012345678901234567890.pack", sha1_file_directory);
+ name = base + len + 11;
+ }
+
+ buf = name;
+
+ for (i = 0; i < 20; i++) {
+ unsigned int val = *sha1++;
+ *buf++ = hex[val >> 4];
+ *buf++ = hex[val & 0xf];
+ }
+
+ return base;
+}
+
+char *sha1_pack_index_name(const unsigned char *sha1)
+{
+ static const char hex[] = "0123456789abcdef";
+ static char *name, *base, *buf;
+ int i;
+
+ if (!base) {
+ const char *sha1_file_directory = get_object_directory();
+ int len = strlen(sha1_file_directory);
+ base = xmalloc(len + 60);
+ sprintf(base, "%s/pack/pack-1234567890123456789012345678901234567890.idx", sha1_file_directory);
+ name = base + len + 11;
+ }
+
+ buf = name;
+
+ for (i = 0; i < 20; i++) {
+ unsigned int val = *sha1++;
+ *buf++ = hex[val >> 4];
+ *buf++ = hex[val & 0xf];
+ }
+
+ return base;
+}
+
struct alternate_object_database *alt_odb;
/*
int use_packed_git(struct packed_git *p)
{
+ if (!p->pack_size) {
+ struct stat st;
+ // We created the struct before we had the pack
+ stat(p->pack_name, &st);
+ if (!S_ISREG(st.st_mode))
+ die("packfile %s not a regular file", p->pack_name);
+ p->pack_size = st.st_size;
+ }
if (!p->pack_base) {
int fd;
struct stat st;
* this is cheap.
*/
if (memcmp((char*)(p->index_base) + p->index_size - 40,
- p->pack_base + p->pack_size - 20, 20))
+ p->pack_base + p->pack_size - 20, 20)) {
+
die("packfile %s does not match index.", p->pack_name);
+ }
}
p->pack_last_used = pack_used_ctr++;
p->pack_use_cnt++;
return p;
}
+struct packed_git *parse_pack_index(unsigned char *sha1)
+{
+ struct packed_git *p;
+ unsigned long idx_size;
+ void *idx_map;
+ char *path = sha1_pack_index_name(sha1);
+
+ if (check_packed_git_idx(path, &idx_size, &idx_map))
+ return NULL;
+
+ path = sha1_pack_name(sha1);
+
+ p = xmalloc(sizeof(*p) + strlen(path) + 2);
+ strcpy(p->pack_name, path);
+ p->index_size = idx_size;
+ p->pack_size = 0;
+ p->index_base = idx_map;
+ p->next = NULL;
+ p->pack_base = NULL;
+ p->pack_last_used = 0;
+ p->pack_use_cnt = 0;
+ memcpy(p->sha1, sha1, 20);
+ return p;
+}
+
+void install_packed_git(struct packed_git *pack)
+{
+ pack->next = packed_git;
+ packed_git = pack;
+}
+
static void prepare_packed_git_one(char *objdir)
{
char path[PATH_MAX];
}
static void *map_sha1_file_internal(const unsigned char *sha1,
- unsigned long *size,
- int say_error)
+ unsigned long *size)
{
struct stat st;
void *map;
char *filename = find_sha1_file(sha1, &st);
if (!filename) {
- if (say_error)
- error("cannot map sha1 file %s", sha1_to_hex(sha1));
return NULL;
}
break;
/* Fallthrough */
case 0:
- if (say_error)
- perror(filename);
return NULL;
}
}
map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
- if (-1 == (int)(long)map)
+ if (map == MAP_FAILED)
return NULL;
*size = st.st_size;
return map;
}
-void *map_sha1_file(const unsigned char *sha1, unsigned long *size)
-{
- return map_sha1_file_internal(sha1, size, 1);
-}
-
int unpack_sha1_header(z_stream *stream, void *map, unsigned long mapsize, void *buffer, unsigned long size)
{
/* Get the data stream */
return 0;
}
+struct packed_git *find_sha1_pack(const unsigned char *sha1,
+ struct packed_git *packs)
+{
+ struct packed_git *p;
+ struct pack_entry e;
+
+ for (p = packs; p; p = p->next) {
+ if (find_pack_entry_one(sha1, &e, p))
+ return p;
+ }
+ return NULL;
+
+}
+
int sha1_object_info(const unsigned char *sha1, char *type, unsigned long *sizep)
{
int status;
z_stream stream;
char hdr[128];
- map = map_sha1_file_internal(sha1, &mapsize, 0);
+ map = map_sha1_file_internal(sha1, &mapsize);
if (!map) {
struct pack_entry e;
{
unsigned long mapsize;
void *map, *buf;
+ struct pack_entry e;
- map = map_sha1_file_internal(sha1, &mapsize, 0);
+ if (find_pack_entry(sha1, &e))
+ return read_packed_sha1(sha1, type, size);
+ map = map_sha1_file_internal(sha1, &mapsize);
if (map) {
buf = unpack_sha1_file(map, mapsize, type, size);
munmap(map, mapsize);
return buf;
}
- return read_packed_sha1(sha1, type, size);
+ return NULL;
}
void *read_object_with_reference(const unsigned char *sha1,
free(buffer);
return NULL;
}
+ free(buffer);
/* Now we have the ID of the referred-to object in
* actual_sha1. Check again. */
}
return 0;
}
-int write_sha1_from_fd(const unsigned char *sha1, int fd)
+int write_sha1_to_fd(int fd, const unsigned char *sha1)
+{
+ ssize_t size;
+ unsigned long objsize;
+ int posn = 0;
+ void *map = map_sha1_file_internal(sha1, &objsize);
+ void *buf = map;
+ void *temp_obj = NULL;
+ z_stream stream;
+
+ if (!buf) {
+ unsigned char *unpacked;
+ unsigned long len;
+ char type[20];
+ char hdr[50];
+ int hdrlen;
+ // need to unpack and recompress it by itself
+ unpacked = read_packed_sha1(sha1, type, &len);
+
+ hdrlen = sprintf(hdr, "%s %lu", type, len) + 1;
+
+ /* Set it up */
+ memset(&stream, 0, sizeof(stream));
+ deflateInit(&stream, Z_BEST_COMPRESSION);
+ size = deflateBound(&stream, len + hdrlen);
+ temp_obj = buf = xmalloc(size);
+
+ /* Compress it */
+ stream.next_out = buf;
+ stream.avail_out = size;
+
+ /* First header.. */
+ stream.next_in = (void *)hdr;
+ stream.avail_in = hdrlen;
+ while (deflate(&stream, 0) == Z_OK)
+ /* nothing */;
+
+ /* Then the data itself.. */
+ stream.next_in = unpacked;
+ stream.avail_in = len;
+ while (deflate(&stream, Z_FINISH) == Z_OK)
+ /* nothing */;
+ deflateEnd(&stream);
+ free(unpacked);
+
+ objsize = stream.total_out;
+ }
+
+ do {
+ size = write(fd, buf + posn, objsize - posn);
+ if (size <= 0) {
+ if (!size) {
+ fprintf(stderr, "write closed");
+ } else {
+ perror("write ");
+ }
+ return -1;
+ }
+ posn += size;
+ } while (posn < objsize);
+
+ if (map)
+ munmap(map, objsize);
+ if (temp_obj)
+ free(temp_obj);
+
+ return 0;
+}
+
+int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
+ size_t bufsize, size_t *bufposn)
{
char *filename = sha1_file_name(sha1);
int local;
z_stream stream;
unsigned char real_sha1[20];
- unsigned char buf[4096];
unsigned char discard[4096];
int ret;
SHA_CTX c;
do {
ssize_t size;
- size = read(fd, buf, 4096);
+ if (*bufposn) {
+ stream.avail_in = *bufposn;
+ stream.next_in = (unsigned char *) buffer;
+ do {
+ stream.next_out = discard;
+ stream.avail_out = sizeof(discard);
+ ret = inflate(&stream, Z_SYNC_FLUSH);
+ SHA1_Update(&c, discard, sizeof(discard) -
+ stream.avail_out);
+ } while (stream.avail_in && ret == Z_OK);
+ write(local, buffer, *bufposn - stream.avail_in);
+ memmove(buffer, buffer + *bufposn - stream.avail_in,
+ stream.avail_in);
+ *bufposn = stream.avail_in;
+ if (ret != Z_OK)
+ break;
+ }
+ size = read(fd, buffer + *bufposn, bufsize - *bufposn);
if (size <= 0) {
close(local);
unlink(filename);
perror("Reading from connection");
return -1;
}
- write(local, buf, size);
- stream.avail_in = size;
- stream.next_in = buf;
- do {
- stream.next_out = discard;
- stream.avail_out = sizeof(discard);
- ret = inflate(&stream, Z_SYNC_FLUSH);
- SHA1_Update(&c, discard, sizeof(discard) -
- stream.avail_out);
- } while (stream.avail_in && ret == Z_OK);
-
- } while (ret == Z_OK);
+ *bufposn += size;
+ } while (1);
inflateEnd(&stream);
close(local);
return 0;
}
+int has_pack_index(const unsigned char *sha1)
+{
+ struct stat st;
+ if (stat(sha1_pack_index_name(sha1), &st))
+ return 0;
+ return 1;
+}
+
+int has_pack_file(const unsigned char *sha1)
+{
+ struct stat st;
+ if (stat(sha1_pack_name(sha1), &st))
+ return 0;
+ return 1;
+}
+
int has_sha1_pack(const unsigned char *sha1)
{
struct pack_entry e;
struct stat st;
struct pack_entry e;
- if (find_sha1_file(sha1, &st))
+ if (find_pack_entry(sha1, &e))
return 1;
- return find_pack_entry(sha1, &e);
+ return find_sha1_file(sha1, &st) ? 1 : 0;
}
int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type)
if (size)
buf = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
- if ((int)(long)buf == -1)
+ if (buf == MAP_FAILED)
return -1;
if (!type)