EMPTY_BLOB_SHA1_BIN_LITERAL
};
+static void git_hash_sha1_init(git_hash_ctx *ctx)
+{
+ git_SHA1_Init(&ctx->sha1);
+}
+
+static void git_hash_sha1_update(git_hash_ctx *ctx, const void *data, size_t len)
+{
+ git_SHA1_Update(&ctx->sha1, data, len);
+}
+
+static void git_hash_sha1_final(unsigned char *hash, git_hash_ctx *ctx)
+{
+ git_SHA1_Final(hash, &ctx->sha1);
+}
+
+static void git_hash_unknown_init(git_hash_ctx *ctx)
+{
+ die("trying to init unknown hash");
+}
+
+static void git_hash_unknown_update(git_hash_ctx *ctx, const void *data, size_t len)
+{
+ die("trying to update unknown hash");
+}
+
+static void git_hash_unknown_final(unsigned char *hash, git_hash_ctx *ctx)
+{
+ die("trying to finalize unknown hash");
+}
+
+const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = {
+ {
+ NULL,
+ 0x00000000,
+ 0,
+ 0,
+ git_hash_unknown_init,
+ git_hash_unknown_update,
+ git_hash_unknown_final,
+ NULL,
+ NULL,
+ },
+ {
+ "sha-1",
+ /* "sha1", big-endian */
+ 0x73686131,
+ GIT_SHA1_RAWSZ,
+ GIT_SHA1_HEXSZ,
+ git_hash_sha1_init,
+ git_hash_sha1_update,
+ git_hash_sha1_final,
+ &empty_tree_oid,
+ &empty_blob_oid,
+ },
+};
+
/*
* This is meant to hold a *small* number of objects that you would
* want read_sha1_file() to be able to return, but yet you do not want
return NULL;
}
+
+static enum safe_crlf get_safe_crlf(unsigned flags)
+{
+ if (flags & HASH_RENORMALIZE)
+ return SAFE_CRLF_RENORMALIZE;
+ else if (flags & HASH_WRITE_OBJECT)
+ return safe_crlf;
+ else
+ return SAFE_CRLF_FALSE;
+}
+
+
int mkdir_in_gitdir(const char *path)
{
if (mkdir(path, 0777)) {
struct strbuf objdirbuf = STRBUF_INIT;
struct strbuf entry = STRBUF_INIT;
+ if (!alt || !*alt)
+ return;
+
if (depth > 5) {
error("%s: ignoring alternate object stores, nesting too deep.",
relative_base);
void add_to_alternates_file(const char *reference)
{
- struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
+ struct lock_file lock = LOCK_INIT;
char *alts = git_pathdup("objects/info/alternates");
FILE *in, *out;
+ int found = 0;
- hold_lock_file_for_update(lock, alts, LOCK_DIE_ON_ERROR);
- out = fdopen_lock_file(lock, "w");
+ hold_lock_file_for_update(&lock, alts, LOCK_DIE_ON_ERROR);
+ out = fdopen_lock_file(&lock, "w");
if (!out)
die_errno("unable to fdopen alternates lockfile");
in = fopen(alts, "r");
if (in) {
struct strbuf line = STRBUF_INIT;
- int found = 0;
while (strbuf_getline(&line, in) != EOF) {
if (!strcmp(reference, line.buf)) {
strbuf_release(&line);
fclose(in);
-
- if (found) {
- rollback_lock_file(lock);
- lock = NULL;
- }
}
else if (errno != ENOENT)
die_errno("unable to read alternates file");
- if (lock) {
+ if (found) {
+ rollback_lock_file(&lock);
+ } else {
fprintf_or_die(out, "%s\n", reference);
- if (commit_lock_file(lock))
+ if (commit_lock_file(&lock))
die_errno("unable to move new alternates file into place");
if (alt_odb_tail)
link_alt_odb_entries(reference, '\n', NULL, 0);
return;
alt = getenv(ALTERNATE_DB_ENVIRONMENT);
- if (!alt) alt = "";
alt_odb_tail = &alt_odb_list;
link_alt_odb_entries(alt, PATH_SEP, NULL, 0);
int check_sha1_signature(const unsigned char *sha1, void *map,
unsigned long size, const char *type)
{
- unsigned char real_sha1[20];
+ struct object_id real_oid;
enum object_type obj_type;
struct git_istream *st;
- git_SHA_CTX c;
+ git_hash_ctx c;
char hdr[32];
int hdrlen;
if (map) {
- hash_sha1_file(map, size, type, real_sha1);
- return hashcmp(sha1, real_sha1) ? -1 : 0;
+ hash_sha1_file(map, size, type, real_oid.hash);
+ return hashcmp(sha1, real_oid.hash) ? -1 : 0;
}
st = open_istream(sha1, &obj_type, &size, NULL);
hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(obj_type), size) + 1;
/* Sha1.. */
- git_SHA1_Init(&c);
- git_SHA1_Update(&c, hdr, hdrlen);
+ the_hash_algo->init_fn(&c);
+ the_hash_algo->update_fn(&c, hdr, hdrlen);
for (;;) {
char buf[1024 * 16];
ssize_t readlen = read_istream(st, buf, sizeof(buf));
}
if (!readlen)
break;
- git_SHA1_Update(&c, buf, readlen);
+ the_hash_algo->update_fn(&c, buf, readlen);
}
- git_SHA1_Final(real_sha1, &c);
+ the_hash_algo->final_fn(real_oid.hash, &c);
close_istream(st);
- return hashcmp(sha1, real_sha1) ? -1 : 0;
+ return hashcmp(sha1, real_oid.hash) ? -1 : 0;
}
int git_open_cloexec(const char *name, int flags)
lookup_replace_object(sha1) :
sha1;
+ if (is_null_sha1(real))
+ return -1;
+
if (!oi)
oi = &blank_oi;
const char *type, unsigned char *sha1,
char *hdr, int *hdrlen)
{
- git_SHA_CTX c;
+ git_hash_ctx c;
/* Generate the header */
*hdrlen = xsnprintf(hdr, *hdrlen, "%s %lu", type, len)+1;
/* Sha1.. */
- git_SHA1_Init(&c);
- git_SHA1_Update(&c, hdr, *hdrlen);
- git_SHA1_Update(&c, buf, len);
- git_SHA1_Final(sha1, &c);
+ the_hash_algo->init_fn(&c);
+ the_hash_algo->update_fn(&c, hdr, *hdrlen);
+ the_hash_algo->update_fn(&c, buf, len);
+ the_hash_algo->final_fn(sha1, &c);
}
/*
int fd, ret;
unsigned char compressed[4096];
git_zstream stream;
- git_SHA_CTX c;
- unsigned char parano_sha1[20];
+ git_hash_ctx c;
+ struct object_id parano_oid;
static struct strbuf tmp_file = STRBUF_INIT;
const char *filename = sha1_file_name(sha1);
git_deflate_init(&stream, zlib_compression_level);
stream.next_out = compressed;
stream.avail_out = sizeof(compressed);
- git_SHA1_Init(&c);
+ the_hash_algo->init_fn(&c);
/* First header.. */
stream.next_in = (unsigned char *)hdr;
stream.avail_in = hdrlen;
while (git_deflate(&stream, 0) == Z_OK)
; /* nothing */
- git_SHA1_Update(&c, hdr, hdrlen);
+ the_hash_algo->update_fn(&c, hdr, hdrlen);
/* Then the data itself.. */
stream.next_in = (void *)buf;
do {
unsigned char *in0 = stream.next_in;
ret = git_deflate(&stream, Z_FINISH);
- git_SHA1_Update(&c, in0, stream.next_in - in0);
+ the_hash_algo->update_fn(&c, in0, stream.next_in - in0);
if (write_buffer(fd, compressed, stream.next_out - compressed) < 0)
die("unable to write sha1 file");
stream.next_out = compressed;
ret = git_deflate_end_gently(&stream);
if (ret != Z_OK)
die("deflateEnd on object %s failed (%d)", sha1_to_hex(sha1), ret);
- git_SHA1_Final(parano_sha1, &c);
- if (hashcmp(sha1, parano_sha1) != 0)
+ the_hash_algo->final_fn(parano_oid.hash, &c);
+ if (hashcmp(sha1, parano_oid.hash) != 0)
die("confused by unstable object source data for %s", sha1_to_hex(sha1));
close_sha1_file(fd);
die("corrupt tag");
}
-static int index_mem(unsigned char *sha1, void *buf, size_t size,
+static int index_mem(struct object_id *oid, void *buf, size_t size,
enum object_type type,
const char *path, unsigned flags)
{
if ((type == OBJ_BLOB) && path) {
struct strbuf nbuf = STRBUF_INIT;
if (convert_to_git(&the_index, path, buf, size, &nbuf,
- write_object ? safe_crlf : SAFE_CRLF_FALSE)) {
+ get_safe_crlf(flags))) {
buf = strbuf_detach(&nbuf, &size);
re_allocated = 1;
}
}
if (write_object)
- ret = write_sha1_file(buf, size, typename(type), sha1);
+ ret = write_sha1_file(buf, size, typename(type), oid->hash);
else
- ret = hash_sha1_file(buf, size, typename(type), sha1);
+ ret = hash_sha1_file(buf, size, typename(type), oid->hash);
if (re_allocated)
free(buf);
return ret;
}
-static int index_stream_convert_blob(unsigned char *sha1, int fd,
+static int index_stream_convert_blob(struct object_id *oid, int fd,
const char *path, unsigned flags)
{
int ret;
assert(would_convert_to_git_filter_fd(path));
convert_to_git_filter_fd(&the_index, path, fd, &sbuf,
- write_object ? safe_crlf : SAFE_CRLF_FALSE);
+ get_safe_crlf(flags));
if (write_object)
ret = write_sha1_file(sbuf.buf, sbuf.len, typename(OBJ_BLOB),
- sha1);
+ oid->hash);
else
ret = hash_sha1_file(sbuf.buf, sbuf.len, typename(OBJ_BLOB),
- sha1);
+ oid->hash);
strbuf_release(&sbuf);
return ret;
}
-static int index_pipe(unsigned char *sha1, int fd, enum object_type type,
+static int index_pipe(struct object_id *oid, int fd, enum object_type type,
const char *path, unsigned flags)
{
struct strbuf sbuf = STRBUF_INIT;
int ret;
if (strbuf_read(&sbuf, fd, 4096) >= 0)
- ret = index_mem(sha1, sbuf.buf, sbuf.len, type, path, flags);
+ ret = index_mem(oid, sbuf.buf, sbuf.len, type, path, flags);
else
ret = -1;
strbuf_release(&sbuf);
#define SMALL_FILE_SIZE (32*1024)
-static int index_core(unsigned char *sha1, int fd, size_t size,
+static int index_core(struct object_id *oid, int fd, size_t size,
enum object_type type, const char *path,
unsigned flags)
{
int ret;
if (!size) {
- ret = index_mem(sha1, "", size, type, path, flags);
+ ret = index_mem(oid, "", size, type, path, flags);
} else if (size <= SMALL_FILE_SIZE) {
char *buf = xmalloc(size);
ssize_t read_result = read_in_full(fd, buf, size);
ret = error("short read while indexing %s",
path ? path : "<unknown>");
else
- ret = index_mem(sha1, buf, size, type, path, flags);
+ ret = index_mem(oid, buf, size, type, path, flags);
free(buf);
} else {
void *buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
- ret = index_mem(sha1, buf, size, type, path, flags);
+ ret = index_mem(oid, buf, size, type, path, flags);
munmap(buf, size);
}
return ret;
* die() for large files.
*/
if (type == OBJ_BLOB && path && would_convert_to_git_filter_fd(path))
- ret = index_stream_convert_blob(oid->hash, fd, path, flags);
+ ret = index_stream_convert_blob(oid, fd, path, flags);
else if (!S_ISREG(st->st_mode))
- ret = index_pipe(oid->hash, fd, type, path, flags);
+ ret = index_pipe(oid, fd, type, path, flags);
else if (st->st_size <= big_file_threshold || type != OBJ_BLOB ||
(path && would_convert_to_git(&the_index, path)))
- ret = index_core(oid->hash, fd, xsize_t(st->st_size), type, path,
+ ret = index_core(oid, fd, xsize_t(st->st_size), type, path,
flags);
else
ret = index_stream(oid, fd, xsize_t(st->st_size), type, path,
strbuf_release(&sb);
break;
case S_IFDIR:
- return resolve_gitlink_ref(path, "HEAD", oid->hash);
+ return resolve_gitlink_ref(path, "HEAD", oid);
default:
return error("%s: unsupported file type", path);
}
DIR *dir;
struct dirent *de;
int r = 0;
+ struct object_id oid;
if (subdir_nr > 0xff)
BUG("invalid loose object subdirectory: %x", subdir_nr);
origlen = path->len;
strbuf_complete(path, '/');
strbuf_addf(path, "%02x", subdir_nr);
- baselen = path->len;
dir = opendir(path->buf);
if (!dir) {
return r;
}
+ oid.hash[0] = subdir_nr;
+ strbuf_addch(path, '/');
+ baselen = path->len;
+
while ((de = readdir(dir))) {
+ size_t namelen;
if (is_dot_or_dotdot(de->d_name))
continue;
+ namelen = strlen(de->d_name);
strbuf_setlen(path, baselen);
- strbuf_addf(path, "/%s", de->d_name);
-
- if (strlen(de->d_name) == GIT_SHA1_HEXSZ - 2) {
- char hex[GIT_MAX_HEXSZ+1];
- struct object_id oid;
-
- xsnprintf(hex, sizeof(hex), "%02x%s",
- subdir_nr, de->d_name);
- if (!get_oid_hex(hex, &oid)) {
- if (obj_cb) {
- r = obj_cb(&oid, path->buf, data);
- if (r)
- break;
- }
- continue;
+ strbuf_add(path, de->d_name, namelen);
+ if (namelen == GIT_SHA1_HEXSZ - 2 &&
+ !hex_to_bytes(oid.hash + 1, de->d_name,
+ GIT_SHA1_RAWSZ - 1)) {
+ if (obj_cb) {
+ r = obj_cb(&oid, path->buf, data);
+ if (r)
+ break;
}
+ continue;
}
if (cruft_cb) {
}
closedir(dir);
- strbuf_setlen(path, baselen);
+ strbuf_setlen(path, baselen - 1);
if (!r && subdir_cb)
r = subdir_cb(subdir_nr, path->buf, data);
const char *path,
const unsigned char *expected_sha1)
{
- git_SHA_CTX c;
+ git_hash_ctx c;
unsigned char real_sha1[GIT_MAX_RAWSZ];
unsigned char buf[4096];
unsigned long total_read;
int status = Z_OK;
- git_SHA1_Init(&c);
- git_SHA1_Update(&c, hdr, stream->total_out);
+ the_hash_algo->init_fn(&c);
+ the_hash_algo->update_fn(&c, hdr, stream->total_out);
/*
* We already read some bytes into hdr, but the ones up to the NUL
if (size - total_read < stream->avail_out)
stream->avail_out = size - total_read;
status = git_inflate(stream, Z_FINISH);
- git_SHA1_Update(&c, buf, stream->next_out - buf);
+ the_hash_algo->update_fn(&c, buf, stream->next_out - buf);
total_read += stream->next_out - buf;
}
git_inflate_end(stream);
return -1;
}
- git_SHA1_Final(real_sha1, &c);
+ the_hash_algo->final_fn(real_sha1, &c);
if (hashcmp(expected_sha1, real_sha1)) {
error("sha1 mismatch for %s (expected %s)", path,
sha1_to_hex(expected_sha1));