summaryrefslogtreecommitdiff
path: root/sha1-file.c
diff options
context:
space:
mode:
Diffstat (limited to 'sha1-file.c')
-rw-r--r--sha1-file.c228
1 files changed, 111 insertions, 117 deletions
diff --git a/sha1-file.c b/sha1-file.c
index 10f9e9936a..494606f771 100644
--- a/sha1-file.c
+++ b/sha1-file.c
@@ -192,7 +192,7 @@ int hash_algo_by_id(uint32_t format_id)
/*
* 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
+ * want read_object_file() to be able to return, but yet you do not want
* to write them into the object store (e.g. a browse-only
* application).
*/
@@ -401,12 +401,12 @@ out:
return ret;
}
-static void fill_sha1_path(struct strbuf *buf, const unsigned char *sha1)
+static void fill_loose_path(struct strbuf *buf, const struct object_id *oid)
{
int i;
for (i = 0; i < the_hash_algo->rawsz; i++) {
static char hex[] = "0123456789abcdef";
- unsigned int val = sha1[i];
+ unsigned int val = oid->hash[i];
strbuf_addch(buf, hex[val >> 4]);
strbuf_addch(buf, hex[val & 0xf]);
if (!i)
@@ -416,19 +416,19 @@ static void fill_sha1_path(struct strbuf *buf, const unsigned char *sha1)
static const char *odb_loose_path(struct object_directory *odb,
struct strbuf *buf,
- const unsigned char *sha1)
+ const struct object_id *oid)
{
strbuf_reset(buf);
strbuf_addstr(buf, odb->path);
strbuf_addch(buf, '/');
- fill_sha1_path(buf, sha1);
+ fill_loose_path(buf, oid);
return buf->buf;
}
const char *loose_object_path(struct repository *r, struct strbuf *buf,
- const unsigned char *sha1)
+ const struct object_id *oid)
{
- return odb_loose_path(r->objects->odb, buf, sha1);
+ return odb_loose_path(r->objects->odb, buf, oid);
}
/*
@@ -789,7 +789,7 @@ static int check_and_freshen_odb(struct object_directory *odb,
int freshen)
{
static struct strbuf path = STRBUF_INIT;
- odb_loose_path(odb, &path, oid->hash);
+ odb_loose_path(odb, &path, oid);
return check_and_freshen_file(path.buf, freshen);
}
@@ -866,8 +866,8 @@ void *xmmap(void *start, size_t length,
/*
* With an in-core object data in "map", rehash it to make sure the
- * object name actually matches "sha1" to detect object corruption.
- * With "map" == NULL, try reading the object named with "sha1" using
+ * object name actually matches "oid" to detect object corruption.
+ * With "map" == NULL, try reading the object named with "oid" using
* the streaming interface and rehash it to do the same.
*/
int check_object_signature(const struct object_id *oid, void *map,
@@ -940,22 +940,22 @@ int git_open_cloexec(const char *name, int flags)
}
/*
- * Find "sha1" as a loose object in the local repository or in an alternate.
+ * Find "oid" as a loose object in the local repository or in an alternate.
* Returns 0 on success, negative on failure.
*
* The "path" out-parameter will give the path of the object we found (if any).
* Note that it may point to static storage and is only valid until another
- * call to stat_sha1_file().
+ * call to stat_loose_object().
*/
-static int stat_sha1_file(struct repository *r, const unsigned char *sha1,
- struct stat *st, const char **path)
+static int stat_loose_object(struct repository *r, const struct object_id *oid,
+ struct stat *st, const char **path)
{
struct object_directory *odb;
static struct strbuf buf = STRBUF_INIT;
prepare_alt_odb(r);
for (odb = r->objects->odb; odb; odb = odb->next) {
- *path = odb_loose_path(odb, &buf, sha1);
+ *path = odb_loose_path(odb, &buf, oid);
if (!lstat(*path, st))
return 0;
}
@@ -964,11 +964,11 @@ static int stat_sha1_file(struct repository *r, const unsigned char *sha1,
}
/*
- * Like stat_sha1_file(), but actually open the object and return the
+ * Like stat_loose_object(), but actually open the object and return the
* descriptor. See the caveats on the "path" parameter above.
*/
-static int open_sha1_file(struct repository *r,
- const unsigned char *sha1, const char **path)
+static int open_loose_object(struct repository *r,
+ const struct object_id *oid, const char **path)
{
int fd;
struct object_directory *odb;
@@ -977,7 +977,7 @@ static int open_sha1_file(struct repository *r,
prepare_alt_odb(r);
for (odb = r->objects->odb; odb; odb = odb->next) {
- *path = odb_loose_path(odb, &buf, sha1);
+ *path = odb_loose_path(odb, &buf, oid);
fd = git_open(*path);
if (fd >= 0)
return fd;
@@ -990,16 +990,13 @@ static int open_sha1_file(struct repository *r,
}
static int quick_has_loose(struct repository *r,
- const unsigned char *sha1)
+ const struct object_id *oid)
{
- struct object_id oid;
struct object_directory *odb;
- hashcpy(oid.hash, sha1);
-
prepare_alt_odb(r);
for (odb = r->objects->odb; odb; odb = odb->next) {
- if (oid_array_lookup(odb_loose_cache(odb, &oid), &oid) >= 0)
+ if (oid_array_lookup(odb_loose_cache(odb, oid), oid) >= 0)
return 1;
}
return 0;
@@ -1007,10 +1004,10 @@ static int quick_has_loose(struct repository *r,
/*
* Map the loose object at "path" if it is not NULL, or the path found by
- * searching for a loose object named "sha1".
+ * searching for a loose object named "oid".
*/
-static void *map_sha1_file_1(struct repository *r, const char *path,
- const unsigned char *sha1, unsigned long *size)
+static void *map_loose_object_1(struct repository *r, const char *path,
+ const struct object_id *oid, unsigned long *size)
{
void *map;
int fd;
@@ -1018,7 +1015,7 @@ static void *map_sha1_file_1(struct repository *r, const char *path,
if (path)
fd = git_open(path);
else
- fd = open_sha1_file(r, sha1, &path);
+ fd = open_loose_object(r, oid, &path);
map = NULL;
if (fd >= 0) {
struct stat st;
@@ -1038,15 +1035,16 @@ static void *map_sha1_file_1(struct repository *r, const char *path,
return map;
}
-void *map_sha1_file(struct repository *r,
- const unsigned char *sha1, unsigned long *size)
+void *map_loose_object(struct repository *r,
+ const struct object_id *oid,
+ unsigned long *size)
{
- return map_sha1_file_1(r, NULL, sha1, size);
+ return map_loose_object_1(r, NULL, oid, size);
}
-static int unpack_sha1_short_header(git_zstream *stream,
- unsigned char *map, unsigned long mapsize,
- void *buffer, unsigned long bufsiz)
+static int unpack_loose_short_header(git_zstream *stream,
+ unsigned char *map, unsigned long mapsize,
+ void *buffer, unsigned long bufsiz)
{
/* Get the data stream */
memset(stream, 0, sizeof(*stream));
@@ -1059,12 +1057,12 @@ static int unpack_sha1_short_header(git_zstream *stream,
return git_inflate(stream, 0);
}
-int unpack_sha1_header(git_zstream *stream,
- unsigned char *map, unsigned long mapsize,
- void *buffer, unsigned long bufsiz)
+int unpack_loose_header(git_zstream *stream,
+ unsigned char *map, unsigned long mapsize,
+ void *buffer, unsigned long bufsiz)
{
- int status = unpack_sha1_short_header(stream, map, mapsize,
- buffer, bufsiz);
+ int status = unpack_loose_short_header(stream, map, mapsize,
+ buffer, bufsiz);
if (status < Z_OK)
return status;
@@ -1075,13 +1073,13 @@ int unpack_sha1_header(git_zstream *stream,
return 0;
}
-static int unpack_sha1_header_to_strbuf(git_zstream *stream, unsigned char *map,
- unsigned long mapsize, void *buffer,
- unsigned long bufsiz, struct strbuf *header)
+static int unpack_loose_header_to_strbuf(git_zstream *stream, unsigned char *map,
+ unsigned long mapsize, void *buffer,
+ unsigned long bufsiz, struct strbuf *header)
{
int status;
- status = unpack_sha1_short_header(stream, map, mapsize, buffer, bufsiz);
+ status = unpack_loose_short_header(stream, map, mapsize, buffer, bufsiz);
if (status < Z_OK)
return -1;
@@ -1111,7 +1109,9 @@ static int unpack_sha1_header_to_strbuf(git_zstream *stream, unsigned char *map,
return -1;
}
-static void *unpack_sha1_rest(git_zstream *stream, void *buffer, unsigned long size, const unsigned char *sha1)
+static void *unpack_loose_rest(git_zstream *stream,
+ void *buffer, unsigned long size,
+ const struct object_id *oid)
{
int bytes = strlen(buffer) + 1;
unsigned char *buf = xmallocz(size);
@@ -1148,10 +1148,10 @@ static void *unpack_sha1_rest(git_zstream *stream, void *buffer, unsigned long s
}
if (status < 0)
- error(_("corrupt loose object '%s'"), sha1_to_hex(sha1));
+ error(_("corrupt loose object '%s'"), oid_to_hex(oid));
else if (stream->avail_in)
error(_("garbage at end of loose object '%s'"),
- sha1_to_hex(sha1));
+ oid_to_hex(oid));
free(buf);
return NULL;
}
@@ -1161,8 +1161,8 @@ static void *unpack_sha1_rest(git_zstream *stream, void *buffer, unsigned long s
* too permissive for what we want to check. So do an anal
* object header parse by hand.
*/
-static int parse_sha1_header_extended(const char *hdr, struct object_info *oi,
- unsigned int flags)
+static int parse_loose_header_extended(const char *hdr, struct object_info *oi,
+ unsigned int flags)
{
const char *type_buf = hdr;
unsigned long size;
@@ -1222,17 +1222,17 @@ static int parse_sha1_header_extended(const char *hdr, struct object_info *oi,
return *hdr ? -1 : type;
}
-int parse_sha1_header(const char *hdr, unsigned long *sizep)
+int parse_loose_header(const char *hdr, unsigned long *sizep)
{
struct object_info oi = OBJECT_INFO_INIT;
oi.sizep = sizep;
- return parse_sha1_header_extended(hdr, &oi, 0);
+ return parse_loose_header_extended(hdr, &oi, 0);
}
-static int sha1_loose_object_info(struct repository *r,
- const unsigned char *sha1,
- struct object_info *oi, int flags)
+static int loose_object_info(struct repository *r,
+ const struct object_id *oid,
+ struct object_info *oi, int flags)
{
int status = 0;
unsigned long mapsize;
@@ -1257,15 +1257,15 @@ static int sha1_loose_object_info(struct repository *r,
const char *path;
struct stat st;
if (!oi->disk_sizep && (flags & OBJECT_INFO_QUICK))
- return quick_has_loose(r, sha1) ? 0 : -1;
- if (stat_sha1_file(r, sha1, &st, &path) < 0)
+ return quick_has_loose(r, oid) ? 0 : -1;
+ if (stat_loose_object(r, oid, &st, &path) < 0)
return -1;
if (oi->disk_sizep)
*oi->disk_sizep = st.st_size;
return 0;
}
- map = map_sha1_file(r, sha1, &mapsize);
+ map = map_loose_object(r, oid, &mapsize);
if (!map)
return -1;
@@ -1275,24 +1275,24 @@ static int sha1_loose_object_info(struct repository *r,
if (oi->disk_sizep)
*oi->disk_sizep = mapsize;
if ((flags & OBJECT_INFO_ALLOW_UNKNOWN_TYPE)) {
- if (unpack_sha1_header_to_strbuf(&stream, map, mapsize, hdr, sizeof(hdr), &hdrbuf) < 0)
+ if (unpack_loose_header_to_strbuf(&stream, map, mapsize, hdr, sizeof(hdr), &hdrbuf) < 0)
status = error(_("unable to unpack %s header with --allow-unknown-type"),
- sha1_to_hex(sha1));
- } else if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
+ oid_to_hex(oid));
+ } else if (unpack_loose_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
status = error(_("unable to unpack %s header"),
- sha1_to_hex(sha1));
+ oid_to_hex(oid));
if (status < 0)
; /* Do nothing */
else if (hdrbuf.len) {
- if ((status = parse_sha1_header_extended(hdrbuf.buf, oi, flags)) < 0)
+ if ((status = parse_loose_header_extended(hdrbuf.buf, oi, flags)) < 0)
status = error(_("unable to parse %s header with --allow-unknown-type"),
- sha1_to_hex(sha1));
- } else if ((status = parse_sha1_header_extended(hdr, oi, flags)) < 0)
- status = error(_("unable to parse %s header"), sha1_to_hex(sha1));
+ oid_to_hex(oid));
+ } else if ((status = parse_loose_header_extended(hdr, oi, flags)) < 0)
+ status = error(_("unable to parse %s header"), oid_to_hex(oid));
if (status >= 0 && oi->contentp) {
- *oi->contentp = unpack_sha1_rest(&stream, hdr,
- *oi->sizep, sha1);
+ *oi->contentp = unpack_loose_rest(&stream, hdr,
+ *oi->sizep, oid);
if (!*oi->contentp) {
git_inflate_end(&stream);
status = -1;
@@ -1358,7 +1358,7 @@ int oid_object_info_extended(struct repository *r, const struct object_id *oid,
return -1;
/* Most likely it's a loose object. */
- if (!sha1_loose_object_info(r, real->hash, oi, flags))
+ if (!loose_object_info(r, real, oi, flags))
return 0;
/* Not a loose object; someone else may have just packed it. */
@@ -1421,19 +1421,17 @@ int oid_object_info(struct repository *r,
return type;
}
-static void *read_object(const unsigned char *sha1, enum object_type *type,
+static void *read_object(struct repository *r,
+ const struct object_id *oid, enum object_type *type,
unsigned long *size)
{
- struct object_id oid;
struct object_info oi = OBJECT_INFO_INIT;
void *content;
oi.typep = type;
oi.sizep = size;
oi.contentp = &content;
- hashcpy(oid.hash, sha1);
-
- if (oid_object_info_extended(the_repository, &oid, &oi, 0) < 0)
+ if (oid_object_info_extended(r, oid, &oi, 0) < 0)
return NULL;
return content;
}
@@ -1444,7 +1442,7 @@ int pretend_object_file(void *buf, unsigned long len, enum object_type type,
struct cached_object *co;
hash_object_file(buf, len, type_name(type), oid);
- if (has_sha1_file(oid->hash) || find_cached_object(oid))
+ if (has_object_file(oid) || find_cached_object(oid))
return 0;
ALLOC_GROW(cached_objects, cached_object_nr + 1, cached_object_alloc);
co = &cached_objects[cached_object_nr++];
@@ -1461,7 +1459,8 @@ int pretend_object_file(void *buf, unsigned long len, enum object_type type,
* deal with them should arrange to call read_object() and give error
* messages themselves.
*/
-void *read_object_file_extended(const struct object_id *oid,
+void *read_object_file_extended(struct repository *r,
+ const struct object_id *oid,
enum object_type *type,
unsigned long *size,
int lookup_replace)
@@ -1471,10 +1470,10 @@ void *read_object_file_extended(const struct object_id *oid,
const char *path;
struct stat st;
const struct object_id *repl = lookup_replace ?
- lookup_replace_object(the_repository, oid) : oid;
+ lookup_replace_object(r, oid) : oid;
errno = 0;
- data = read_object(repl->hash, type, size);
+ data = read_object(r, repl, type, size);
if (data)
return data;
@@ -1486,11 +1485,11 @@ void *read_object_file_extended(const struct object_id *oid,
die(_("replacement %s not found for %s"),
oid_to_hex(repl), oid_to_hex(oid));
- if (!stat_sha1_file(the_repository, repl->hash, &st, &path))
+ if (!stat_loose_object(r, repl, &st, &path))
die(_("loose object %s (stored in %s) is corrupt"),
oid_to_hex(repl), path);
- if ((p = has_packed_and_bad(repl->hash)) != NULL)
+ if ((p = has_packed_and_bad(r, repl->hash)) != NULL)
die(_("packed object %s (stored in %s) is corrupt"),
oid_to_hex(repl), p->pack_name);
@@ -1593,7 +1592,7 @@ int finalize_object_file(const char *tmpfile, const char *filename)
unlink_or_warn(tmpfile);
if (ret) {
if (ret != EEXIST) {
- return error_errno(_("unable to write sha1 filename %s"), filename);
+ return error_errno(_("unable to write file %s"), filename);
}
/* FIXME!!! Collision check here ? */
}
@@ -1621,12 +1620,12 @@ int hash_object_file(const void *buf, unsigned long len, const char *type,
}
/* Finalize a file on disk, and close it. */
-static void close_sha1_file(int fd)
+static void close_loose_object(int fd)
{
if (fsync_object_files)
- fsync_or_die(fd, "sha1 file");
+ fsync_or_die(fd, "loose object file");
if (close(fd) != 0)
- die_errno(_("error when closing sha1 file"));
+ die_errno(_("error when closing loose object file"));
}
/* Size of directory component, including the ending '/' */
@@ -1686,7 +1685,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
static struct strbuf tmp_file = STRBUF_INIT;
static struct strbuf filename = STRBUF_INIT;
- loose_object_path(the_repository, &filename, oid->hash);
+ loose_object_path(the_repository, &filename, oid);
fd = create_tmpfile(&tmp_file, filename.buf);
if (fd < 0) {
@@ -1717,7 +1716,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
ret = git_deflate(&stream, Z_FINISH);
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"));
+ die(_("unable to write loose object file"));
stream.next_out = compressed;
stream.avail_out = sizeof(compressed);
} while (ret == Z_OK);
@@ -1734,7 +1733,7 @@ static int write_loose_object(const struct object_id *oid, char *hdr,
die(_("confused by unstable object source data for %s"),
oid_to_hex(oid));
- close_sha1_file(fd);
+ close_loose_object(fd);
if (mtime) {
struct utimbuf utb;
@@ -1814,9 +1813,9 @@ int force_object_loose(const struct object_id *oid, time_t mtime)
if (has_loose_object(oid))
return 0;
- buf = read_object(oid->hash, &type, &len);
+ buf = read_object(the_repository, oid, &type, &len);
if (!buf)
- return error(_("cannot read sha1_file for %s"), oid_to_hex(oid));
+ return error(_("cannot read object for %s"), oid_to_hex(oid));
hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX , type_name(type), (uintmax_t)len) + 1;
ret = write_loose_object(oid, hdr, hdrlen, buf, len, mtime);
free(buf);
@@ -1824,24 +1823,19 @@ int force_object_loose(const struct object_id *oid, time_t mtime)
return ret;
}
-int has_sha1_file_with_flags(const unsigned char *sha1, int flags)
+int repo_has_object_file_with_flags(struct repository *r,
+ const struct object_id *oid, int flags)
{
- struct object_id oid;
if (!startup_info->have_repository)
return 0;
- hashcpy(oid.hash, sha1);
- return oid_object_info_extended(the_repository, &oid, NULL,
+ return oid_object_info_extended(r, oid, NULL,
flags | OBJECT_INFO_SKIP_CACHED) >= 0;
}
-int has_object_file(const struct object_id *oid)
+int repo_has_object_file(struct repository *r,
+ const struct object_id *oid)
{
- return has_sha1_file(oid->hash);
-}
-
-int has_object_file_with_flags(const struct object_id *oid, int flags)
-{
- return has_sha1_file_with_flags(oid->hash, flags);
+ return repo_has_object_file_with_flags(r, oid, 0);
}
static void check_tree(const void *buf, size_t size)
@@ -2252,14 +2246,14 @@ void odb_clear_loose_cache(struct object_directory *odb)
sizeof(odb->loose_objects_subdir_seen));
}
-static int check_stream_sha1(git_zstream *stream,
- const char *hdr,
- unsigned long size,
- const char *path,
- const unsigned char *expected_sha1)
+static int check_stream_oid(git_zstream *stream,
+ const char *hdr,
+ unsigned long size,
+ const char *path,
+ const struct object_id *expected_oid)
{
git_hash_ctx c;
- unsigned char real_sha1[GIT_MAX_RAWSZ];
+ struct object_id real_oid;
unsigned char buf[4096];
unsigned long total_read;
int status = Z_OK;
@@ -2275,7 +2269,7 @@ static int check_stream_sha1(git_zstream *stream,
/*
* This size comparison must be "<=" to read the final zlib packets;
- * see the comment in unpack_sha1_rest for details.
+ * see the comment in unpack_loose_rest for details.
*/
while (total_read <= size &&
(status == Z_OK ||
@@ -2291,19 +2285,19 @@ static int check_stream_sha1(git_zstream *stream,
git_inflate_end(stream);
if (status != Z_STREAM_END) {
- error(_("corrupt loose object '%s'"), sha1_to_hex(expected_sha1));
+ error(_("corrupt loose object '%s'"), oid_to_hex(expected_oid));
return -1;
}
if (stream->avail_in) {
error(_("garbage at end of loose object '%s'"),
- sha1_to_hex(expected_sha1));
+ oid_to_hex(expected_oid));
return -1;
}
- the_hash_algo->final_fn(real_sha1, &c);
- if (!hasheq(expected_sha1, real_sha1)) {
- error(_("sha1 mismatch for %s (expected %s)"), path,
- sha1_to_hex(expected_sha1));
+ the_hash_algo->final_fn(real_oid.hash, &c);
+ if (!oideq(expected_oid, &real_oid)) {
+ error(_("hash mismatch for %s (expected %s)"), path,
+ oid_to_hex(expected_oid));
return -1;
}
@@ -2324,18 +2318,18 @@ int read_loose_object(const char *path,
*contents = NULL;
- map = map_sha1_file_1(the_repository, path, NULL, &mapsize);
+ map = map_loose_object_1(the_repository, path, NULL, &mapsize);
if (!map) {
error_errno(_("unable to mmap %s"), path);
goto out;
}
- if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0) {
+ if (unpack_loose_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0) {
error(_("unable to unpack header of %s"), path);
goto out;
}
- *type = parse_sha1_header(hdr, size);
+ *type = parse_loose_header(hdr, size);
if (*type < 0) {
error(_("unable to parse header of %s"), path);
git_inflate_end(&stream);
@@ -2343,10 +2337,10 @@ int read_loose_object(const char *path,
}
if (*type == OBJ_BLOB && *size > big_file_threshold) {
- if (check_stream_sha1(&stream, hdr, *size, path, expected_oid->hash) < 0)
+ if (check_stream_oid(&stream, hdr, *size, path, expected_oid) < 0)
goto out;
} else {
- *contents = unpack_sha1_rest(&stream, hdr, *size, expected_oid->hash);
+ *contents = unpack_loose_rest(&stream, hdr, *size, expected_oid);
if (!*contents) {
error(_("unable to unpack contents of %s"), path);
git_inflate_end(&stream);
@@ -2354,7 +2348,7 @@ int read_loose_object(const char *path,
}
if (check_object_signature(expected_oid, *contents,
*size, type_name(*type))) {
- error(_("sha1 mismatch for %s (expected %s)"), path,
+ error(_("hash mismatch for %s (expected %s)"), path,
oid_to_hex(expected_oid));
free(*contents);
goto out;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 19:22:14 +0000