diff --git a/sha1_file.c b/sha1_file.c
index 18dece46b1e248a4e52e9ead3bf172ed6ab78236..27b1ebb720b1530d673f3dfb1c27862b4cf90dfd 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
static unsigned int sha1_file_open_flag = O_NOATIME;
static unsigned int sha1_file_open_flag = O_NOATIME;
-static unsigned hexval(char c)
-{
- if (c >= '0' && c <= '9')
- return c - '0';
- if (c >= 'a' && c <= 'f')
- return c - 'a' + 10;
- if (c >= 'A' && c <= 'F')
- return c - 'A' + 10;
- return ~0;
-}
+signed char hexval_table[256] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 00-07 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 08-0f */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 10-17 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 18-1f */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 20-27 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 28-2f */
+ 0, 1, 2, 3, 4, 5, 6, 7, /* 30-37 */
+ 8, 9, -1, -1, -1, -1, -1, -1, /* 38-3f */
+ -1, 10, 11, 12, 13, 14, 15, -1, /* 40-47 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 48-4f */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 50-57 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 58-5f */
+ -1, 10, 11, 12, 13, 14, 15, -1, /* 60-67 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 68-67 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 70-77 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 78-7f */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 80-87 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 88-8f */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 90-97 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 98-9f */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* a0-a7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* a8-af */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* b0-b7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* b8-bf */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* c0-c7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* c8-cf */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* d0-d7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* d8-df */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* e0-e7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* e8-ef */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* f0-f7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* f8-ff */
+};
int get_sha1_hex(const char *hex, unsigned char *sha1)
{
int get_sha1_hex(const char *hex, unsigned char *sha1)
{
/*
* NOTE! This returns a statically allocated buffer, so you have to be
/*
* NOTE! This returns a statically allocated buffer, so you have to be
- * careful about using it. Do a "strdup()" if you need to save the
+ * careful about using it. Do a "xstrdup()" if you need to save the
* filename.
*
* Also note that this returns the location for creating. Reading
* filename.
*
* Also note that this returns the location for creating. Reading
int fd;
struct stat st;
void *map;
int fd;
struct stat st;
void *map;
+ struct pack_header *hdr;
pack_mapped += p->pack_size;
while (PACK_MAX_SZ < pack_mapped && unuse_one_packed_git())
pack_mapped += p->pack_size;
while (PACK_MAX_SZ < pack_mapped && unuse_one_packed_git())
die("packfile %s cannot be mapped.", p->pack_name);
p->pack_base = map;
die("packfile %s cannot be mapped.", p->pack_name);
p->pack_base = map;
+ /* Check if we understand this pack file. If we don't we're
+ * likely too old to handle it.
+ */
+ hdr = map;
+ if (hdr->hdr_signature != htonl(PACK_SIGNATURE))
+ die("packfile %s isn't actually a pack.", p->pack_name);
+ if (!pack_version_ok(hdr->hdr_version))
+ die("packfile %s is version %i and not supported"
+ " (try upgrading GIT to a newer version)",
+ p->pack_name, ntohl(hdr->hdr_version));
+
/* Check if the pack file matches with the index file.
* this is cheap.
*/
/* Check if the pack file matches with the index file.
* this is cheap.
*/
- if (memcmp((char*)(p->index_base) + p->index_size - 40,
- (char *) p->pack_base + p->pack_size - 20,
- 20)) {
-
+ if (hashcmp((unsigned char *)(p->index_base) +
+ p->index_size - 40,
+ (unsigned char *)p->pack_base +
+ p->pack_size - 20)) {
die("packfile %s does not match index.", p->pack_name);
}
}
die("packfile %s does not match index.", p->pack_name);
}
}
p->pack_use_cnt = 0;
p->pack_local = local;
if ((path_len > 44) && !get_sha1_hex(path + path_len - 44, sha1))
p->pack_use_cnt = 0;
p->pack_local = local;
if ((path_len > 44) && !get_sha1_hex(path + path_len - 44, sha1))
- memcpy(p->sha1, sha1, 20);
+ hashcpy(p->sha1, sha1);
return p;
}
return p;
}
@@ -559,7 +595,7 @@ struct packed_git *parse_pack_index_file(const unsigned char *sha1, char *idx_pa
p->pack_base = NULL;
p->pack_last_used = 0;
p->pack_use_cnt = 0;
p->pack_base = NULL;
p->pack_last_used = 0;
p->pack_use_cnt = 0;
- memcpy(p->sha1, sha1, 20);
+ hashcpy(p->sha1, sha1);
return p;
}
return p;
}
@@ -643,7 +679,7 @@ int check_sha1_signature(const unsigned char *sha1, void *map, unsigned long siz
SHA1_Update(&c, header, 1+sprintf(header, "%s %lu", type, size));
SHA1_Update(&c, map, size);
SHA1_Final(real_sha1, &c);
SHA1_Update(&c, header, 1+sprintf(header, "%s %lu", type, size));
SHA1_Update(&c, map, size);
SHA1_Final(real_sha1, &c);
- return memcmp(sha1, real_sha1, 20) ? -1 : 0;
+ return hashcmp(sha1, real_sha1) ? -1 : 0;
}
void *map_sha1_file(const unsigned char *sha1, unsigned long *size)
}
void *map_sha1_file(const unsigned char *sha1, unsigned long *size)
return 0;
}
return 0;
}
-static int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz)
+unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep)
{
{
+ unsigned shift;
unsigned char c;
unsigned char c;
- unsigned int bits;
unsigned long size;
unsigned long size;
- static const char *typename[8] = {
- NULL, /* OBJ_EXT */
- "commit", "tree", "blob", "tag",
- NULL, NULL, NULL
+ unsigned long used = 0;
+
+ c = buf[used++];
+ *type = (c >> 4) & 7;
+ size = c & 15;
+ shift = 4;
+ while (c & 0x80) {
+ if (len <= used)
+ return 0;
+ if (sizeof(long) * 8 <= shift)
+ return 0;
+ c = buf[used++];
+ size += (c & 0x7f) << shift;
+ shift += 7;
+ }
+ *sizep = size;
+ return used;
+}
+
+static int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz)
+{
+ unsigned long size, used;
+ static const char valid_loose_object_type[8] = {
+ 0, /* OBJ_EXT */
+ 1, 1, 1, 1, /* "commit", "tree", "blob", "tag" */
+ 0, /* "delta" and others are invalid in a loose object */
};
};
- const char *type;
+ enum object_type type;
/* Get the data stream */
memset(stream, 0, sizeof(*stream));
/* Get the data stream */
memset(stream, 0, sizeof(*stream));
@@ -723,22 +781,11 @@ static int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned lon
return inflate(stream, 0);
}
return inflate(stream, 0);
}
- c = *map++;
- mapsize--;
- type = typename[(c >> 4) & 7];
- if (!type)
+ used = unpack_object_header_gently(map, mapsize, &type, &size);
+ if (!used || !valid_loose_object_type[type])
return -1;
return -1;
-
- bits = 4;
- size = c & 0xf;
- while ((c & 0x80)) {
- if (bits >= 8*sizeof(long))
- return -1;
- c = *map++;
- size += (c & 0x7f) << bits;
- bits += 7;
- mapsize--;
- }
+ map += used;
+ mapsize -= used;
/* Set up the stream for the rest.. */
stream->next_in = map;
/* Set up the stream for the rest.. */
stream->next_in = map;
@@ -746,7 +793,8 @@ static int unpack_sha1_header(z_stream *stream, unsigned char *map, unsigned lon
inflateInit(stream);
/* And generate the fake traditional header */
inflateInit(stream);
/* And generate the fake traditional header */
- stream->total_out = 1 + snprintf(buffer, bufsiz, "%s %lu", type, size);
+ stream->total_out = 1 + snprintf(buffer, bufsiz, "%s %lu",
+ type_names[type], size);
return 0;
}
return 0;
}
@@ -836,33 +884,32 @@ void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned l
}
/* forward declaration for a mutually recursive function */
}
/* forward declaration for a mutually recursive function */
-static int packed_object_info(struct pack_entry *entry,
+static int packed_object_info(struct packed_git *p, unsigned long offset,
char *type, unsigned long *sizep);
char *type, unsigned long *sizep);
-static int packed_delta_info(unsigned char *base_sha1,
- unsigned long delta_size,
- unsigned long left,
+static int packed_delta_info(struct packed_git *p,
+ unsigned long offset,
char *type,
char *type,
- unsigned long *sizep,
- struct packed_git *p)
+ unsigned long *sizep)
{
{
- struct pack_entry base_ent;
+ unsigned long base_offset;
+ unsigned char *base_sha1 = (unsigned char *) p->pack_base + offset;
- if (left < 20)
+ if (p->pack_size < offset + 20)
die("truncated pack file");
die("truncated pack file");
-
/* The base entry _must_ be in the same pack */
/* The base entry _must_ be in the same pack */
- if (!find_pack_entry_one(base_sha1, &base_ent, p))
+ base_offset = find_pack_entry_one(base_sha1, p);
+ if (!base_offset)
die("failed to find delta-pack base object %s",
sha1_to_hex(base_sha1));
die("failed to find delta-pack base object %s",
sha1_to_hex(base_sha1));
+ offset += 20;
/* We choose to only get the type of the base object and
* ignore potentially corrupt pack file that expects the delta
* based on a base with a wrong size. This saves tons of
* inflate() calls.
*/
/* We choose to only get the type of the base object and
* ignore potentially corrupt pack file that expects the delta
* based on a base with a wrong size. This saves tons of
* inflate() calls.
*/
-
- if (packed_object_info(&base_ent, type, NULL))
+ if (packed_object_info(p, base_offset, type, NULL))
die("cannot get info for delta-pack base");
if (sizep) {
die("cannot get info for delta-pack base");
if (sizep) {
memset(&stream, 0, sizeof(stream));
memset(&stream, 0, sizeof(stream));
- data = stream.next_in = base_sha1 + 20;
- stream.avail_in = left - 20;
+ stream.next_in = (unsigned char *) p->pack_base + offset;
+ stream.avail_in = p->pack_size - offset;
stream.next_out = delta_head;
stream.avail_out = sizeof(delta_head);
stream.next_out = delta_head;
stream.avail_out = sizeof(delta_head);
static unsigned long unpack_object_header(struct packed_git *p, unsigned long offset,
enum object_type *type, unsigned long *sizep)
{
static unsigned long unpack_object_header(struct packed_git *p, unsigned long offset,
enum object_type *type, unsigned long *sizep)
{
- unsigned shift;
- unsigned char *pack, c;
- unsigned long size;
+ unsigned long used;
- if (offset >= p->pack_size)
+ if (p->pack_size <= offset)
die("object offset outside of pack file");
die("object offset outside of pack file");
- pack = (unsigned char *) p->pack_base + offset;
- c = *pack++;
- offset++;
- *type = (c >> 4) & 7;
- size = c & 15;
- shift = 4;
- while (c & 0x80) {
- if (offset >= p->pack_size)
- die("object offset outside of pack file");
- c = *pack++;
- offset++;
- size += (c & 0x7f) << shift;
- shift += 7;
- }
- *sizep = size;
- return offset;
+ used = unpack_object_header_gently((unsigned char *)p->pack_base +
+ offset,
+ p->pack_size - offset, type, sizep);
+ if (!used)
+ die("object offset outside of pack file");
+
+ return offset + used;
}
int check_reuse_pack_delta(struct packed_git *p, unsigned long offset,
}
int check_reuse_pack_delta(struct packed_git *p, unsigned long offset,
ptr = unpack_object_header(p, ptr, kindp, sizep);
if (*kindp != OBJ_DELTA)
goto done;
ptr = unpack_object_header(p, ptr, kindp, sizep);
if (*kindp != OBJ_DELTA)
goto done;
- memcpy(base, (char *) p->pack_base + ptr, 20);
+ hashcpy(base, (unsigned char *) p->pack_base + ptr);
status = 0;
done:
unuse_packed_git(p);
return status;
}
status = 0;
done:
unuse_packed_git(p);
return status;
}
-void packed_object_info_detail(struct pack_entry *e,
+void packed_object_info_detail(struct packed_git *p,
+ unsigned long offset,
char *type,
unsigned long *size,
unsigned long *store_size,
unsigned int *delta_chain_length,
unsigned char *base_sha1)
{
char *type,
unsigned long *size,
unsigned long *store_size,
unsigned int *delta_chain_length,
unsigned char *base_sha1)
{
- struct packed_git *p = e->p;
- unsigned long offset;
- unsigned char *pack;
+ unsigned long val;
+ unsigned char *next_sha1;
enum object_type kind;
enum object_type kind;
- offset = unpack_object_header(p, e->offset, &kind, size);
- pack = (unsigned char *) p->pack_base + offset;
- if (kind != OBJ_DELTA)
- *delta_chain_length = 0;
- else {
- unsigned int chain_length = 0;
- if (p->pack_size <= offset + 20)
- die("pack file %s records an incomplete delta base",
- p->pack_name);
- memcpy(base_sha1, pack, 20);
- do {
- struct pack_entry base_ent;
- unsigned long junk;
-
- find_pack_entry_one(pack, &base_ent, p);
- offset = unpack_object_header(p, base_ent.offset,
- &kind, &junk);
- pack = (unsigned char *) p->pack_base + offset;
- chain_length++;
- } while (kind == OBJ_DELTA);
- *delta_chain_length = chain_length;
- }
- switch (kind) {
- case OBJ_COMMIT:
- strcpy(type, commit_type);
- break;
- case OBJ_TREE:
- strcpy(type, tree_type);
- break;
- case OBJ_BLOB:
- strcpy(type, blob_type);
- break;
- case OBJ_TAG:
- strcpy(type, tag_type);
- break;
- default:
- die("corrupted pack file %s containing object of kind %d",
- p->pack_name, kind);
+ *delta_chain_length = 0;
+ offset = unpack_object_header(p, offset, &kind, size);
+
+ for (;;) {
+ switch (kind) {
+ default:
+ die("corrupted pack file %s containing object of kind %d",
+ p->pack_name, kind);
+ case OBJ_COMMIT:
+ case OBJ_TREE:
+ case OBJ_BLOB:
+ case OBJ_TAG:
+ strcpy(type, type_names[kind]);
+ *store_size = 0; /* notyet */
+ return;
+ case OBJ_DELTA:
+ if (p->pack_size <= offset + 20)
+ die("pack file %s records an incomplete delta base",
+ p->pack_name);
+ next_sha1 = (unsigned char *) p->pack_base + offset;
+ if (*delta_chain_length == 0)
+ hashcpy(base_sha1, next_sha1);
+ offset = find_pack_entry_one(next_sha1, p);
+ break;
+ }
+ offset = unpack_object_header(p, offset, &kind, &val);
+ (*delta_chain_length)++;
}
}
- *store_size = 0; /* notyet */
}
}
-static int packed_object_info(struct pack_entry *entry,
+static int packed_object_info(struct packed_git *p, unsigned long offset,
char *type, unsigned long *sizep)
{
char *type, unsigned long *sizep)
{
- struct packed_git *p = entry->p;
- unsigned long offset, size, left;
- unsigned char *pack;
+ unsigned long size;
enum object_type kind;
enum object_type kind;
- int retval;
- if (use_packed_git(p))
- die("cannot map packed file");
+ offset = unpack_object_header(p, offset, &kind, &size);
- offset = unpack_object_header(p, entry->offset, &kind, &size);
- pack = (unsigned char *) p->pack_base + offset;
- left = p->pack_size - offset;
+ if (kind == OBJ_DELTA)
+ return packed_delta_info(p, offset, type, sizep);
switch (kind) {
switch (kind) {
- case OBJ_DELTA:
- retval = packed_delta_info(pack, size, left, type, sizep, p);
- unuse_packed_git(p);
- return retval;
case OBJ_COMMIT:
case OBJ_COMMIT:
- strcpy(type, commit_type);
- break;
case OBJ_TREE:
case OBJ_TREE:
- strcpy(type, tree_type);
- break;
case OBJ_BLOB:
case OBJ_BLOB:
- strcpy(type, blob_type);
- break;
case OBJ_TAG:
case OBJ_TAG:
- strcpy(type, tag_type);
+ strcpy(type, type_names[kind]);
break;
default:
die("corrupted pack file %s containing object of kind %d",
break;
default:
die("corrupted pack file %s containing object of kind %d",
}
if (sizep)
*sizep = size;
}
if (sizep)
*sizep = size;
- unuse_packed_git(p);
return 0;
}
return 0;
}
-/* forward declaration for a mutually recursive function */
-static void *unpack_entry(struct pack_entry *, char *, unsigned long *);
-
-static void *unpack_delta_entry(unsigned char *base_sha1,
- unsigned long delta_size,
- unsigned long left,
- char *type,
- unsigned long *sizep,
- struct packed_git *p)
-{
- struct pack_entry base_ent;
- void *data, *delta_data, *result, *base;
- unsigned long data_size, result_size, base_size;
- z_stream stream;
- int st;
-
- if (left < 20)
- die("truncated pack file");
-
- /* The base entry _must_ be in the same pack */
- if (!find_pack_entry_one(base_sha1, &base_ent, p))
- die("failed to find delta-pack base object %s",
- sha1_to_hex(base_sha1));
- base = unpack_entry_gently(&base_ent, type, &base_size);
- if (!base)
- die("failed to read delta-pack base object %s",
- sha1_to_hex(base_sha1));
-
- data = base_sha1 + 20;
- data_size = left - 20;
- delta_data = xmalloc(delta_size);
-
- memset(&stream, 0, sizeof(stream));
-
- stream.next_in = data;
- stream.avail_in = data_size;
- stream.next_out = delta_data;
- stream.avail_out = delta_size;
-
- inflateInit(&stream);
- st = inflate(&stream, Z_FINISH);
- inflateEnd(&stream);
- if ((st != Z_STREAM_END) || stream.total_out != delta_size)
- die("delta data unpack failed");
-
- result = patch_delta(base, base_size,
- delta_data, delta_size,
- &result_size);
- if (!result)
- die("failed to apply delta");
- free(delta_data);
- free(base);
- *sizep = result_size;
- return result;
-}
-
-static void *unpack_non_delta_entry(unsigned char *data,
- unsigned long size,
- unsigned long left)
+static void *unpack_compressed_entry(struct packed_git *p,
+ unsigned long offset,
+ unsigned long size)
{
int st;
z_stream stream;
{
int st;
z_stream stream;
buffer = xmalloc(size + 1);
buffer[size] = 0;
memset(&stream, 0, sizeof(stream));
buffer = xmalloc(size + 1);
buffer[size] = 0;
memset(&stream, 0, sizeof(stream));
- stream.next_in = data;
- stream.avail_in = left;
+ stream.next_in = (unsigned char*)p->pack_base + offset;
+ stream.avail_in = p->pack_size - offset;
stream.next_out = buffer;
stream.avail_out = size;
stream.next_out = buffer;
stream.avail_out = size;
return buffer;
}
return buffer;
}
+static void *unpack_delta_entry(struct packed_git *p,
+ unsigned long offset,
+ unsigned long delta_size,
+ char *type,
+ unsigned long *sizep)
+{
+ void *delta_data, *result, *base;
+ unsigned long result_size, base_size, base_offset;
+ unsigned char *base_sha1;
+
+ if (p->pack_size < offset + 20)
+ die("truncated pack file");
+ /* The base entry _must_ be in the same pack */
+ base_sha1 = (unsigned char*)p->pack_base + offset;
+ base_offset = find_pack_entry_one(base_sha1, p);
+ if (!base_offset)
+ die("failed to find delta-pack base object %s",
+ sha1_to_hex(base_sha1));
+ offset += 20;
+
+ base = unpack_entry_gently(p, base_offset, type, &base_size);
+ if (!base)
+ die("failed to read delta base object at %lu from %s",
+ base_offset, p->pack_name);
+
+ delta_data = unpack_compressed_entry(p, offset, delta_size);
+ result = patch_delta(base, base_size,
+ delta_data, delta_size,
+ &result_size);
+ if (!result)
+ die("failed to apply delta");
+ free(delta_data);
+ free(base);
+ *sizep = result_size;
+ return result;
+}
+
static void *unpack_entry(struct pack_entry *entry,
char *type, unsigned long *sizep)
{
static void *unpack_entry(struct pack_entry *entry,
char *type, unsigned long *sizep)
{
if (use_packed_git(p))
die("cannot map packed file");
if (use_packed_git(p))
die("cannot map packed file");
- retval = unpack_entry_gently(entry, type, sizep);
+ retval = unpack_entry_gently(p, entry->offset, type, sizep);
unuse_packed_git(p);
if (!retval)
die("corrupted pack file %s", p->pack_name);
unuse_packed_git(p);
if (!retval)
die("corrupted pack file %s", p->pack_name);
}
/* The caller is responsible for use_packed_git()/unuse_packed_git() pair */
}
/* The caller is responsible for use_packed_git()/unuse_packed_git() pair */
-void *unpack_entry_gently(struct pack_entry *entry,
+void *unpack_entry_gently(struct packed_git *p, unsigned long offset,
char *type, unsigned long *sizep)
{
char *type, unsigned long *sizep)
{
- struct packed_git *p = entry->p;
- unsigned long offset, size, left;
- unsigned char *pack;
+ unsigned long size;
enum object_type kind;
enum object_type kind;
- void *retval;
- offset = unpack_object_header(p, entry->offset, &kind, &size);
- pack = (unsigned char *) p->pack_base + offset;
- left = p->pack_size - offset;
+ offset = unpack_object_header(p, offset, &kind, &size);
switch (kind) {
case OBJ_DELTA:
switch (kind) {
case OBJ_DELTA:
- retval = unpack_delta_entry(pack, size, left, type, sizep, p);
- return retval;
+ return unpack_delta_entry(p, offset, size, type, sizep);
case OBJ_COMMIT:
case OBJ_COMMIT:
- strcpy(type, commit_type);
- break;
case OBJ_TREE:
case OBJ_TREE:
- strcpy(type, tree_type);
- break;
case OBJ_BLOB:
case OBJ_BLOB:
- strcpy(type, blob_type);
- break;
case OBJ_TAG:
case OBJ_TAG:
- strcpy(type, tag_type);
- break;
+ strcpy(type, type_names[kind]);
+ *sizep = size;
+ return unpack_compressed_entry(p, offset, size);
default:
return NULL;
}
default:
return NULL;
}
- *sizep = size;
- retval = unpack_non_delta_entry(pack, size, left);
- return retval;
}
int num_packed_objects(const struct packed_git *p)
}
int num_packed_objects(const struct packed_git *p)
void *index = p->index_base + 256;
if (n < 0 || num_packed_objects(p) <= n)
return -1;
void *index = p->index_base + 256;
if (n < 0 || num_packed_objects(p) <= n)
return -1;
- memcpy(sha1, (char *) index + (24 * n) + 4, 20);
+ hashcpy(sha1, (unsigned char *) index + (24 * n) + 4);
return 0;
}
return 0;
}
-int find_pack_entry_one(const unsigned char *sha1,
- struct pack_entry *e, struct packed_git *p)
+unsigned long find_pack_entry_one(const unsigned char *sha1,
+ struct packed_git *p)
{
unsigned int *level1_ofs = p->index_base;
int hi = ntohl(level1_ofs[*sha1]);
{
unsigned int *level1_ofs = p->index_base;
int hi = ntohl(level1_ofs[*sha1]);
do {
int mi = (lo + hi) / 2;
do {
int mi = (lo + hi) / 2;
- int cmp = memcmp((char *) index + (24 * mi) + 4, sha1, 20);
- if (!cmp) {
- e->offset = ntohl(*((unsigned int *) ((char *) index + (24 * mi))));
- memcpy(e->sha1, sha1, 20);
- e->p = p;
- return 1;
- }
+ int cmp = hashcmp((unsigned char *)index + (24 * mi) + 4, sha1);
+ if (!cmp)
+ return ntohl(*((unsigned int *) ((char *) index + (24 * mi))));
if (cmp > 0)
hi = mi;
else
if (cmp > 0)
hi = mi;
else
return 0;
}
return 0;
}
-static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e)
+static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e, const char **ignore_packed)
{
struct packed_git *p;
{
struct packed_git *p;
+ unsigned long offset;
+
prepare_packed_git();
for (p = packed_git; p; p = p->next) {
prepare_packed_git();
for (p = packed_git; p; p = p->next) {
- if (find_pack_entry_one(sha1, e, p))
+ if (ignore_packed) {
+ const char **ig;
+ for (ig = ignore_packed; *ig; ig++)
+ if (!strcmp(p->pack_name, *ig))
+ break;
+ if (*ig)
+ continue;
+ }
+ offset = find_pack_entry_one(sha1, p);
+ if (offset) {
+ e->offset = offset;
+ e->p = p;
+ hashcpy(e->sha1, sha1);
return 1;
return 1;
+ }
}
return 0;
}
}
return 0;
}
struct packed_git *packs)
{
struct packed_git *p;
struct packed_git *packs)
{
struct packed_git *p;
- struct pack_entry e;
for (p = packs; p; p = p->next) {
for (p = packs; p; p = p->next) {
- if (find_pack_entry_one(sha1, &e, p))
+ if (find_pack_entry_one(sha1, p))
return p;
}
return NULL;
return p;
}
return NULL;
@@ -1259,12 +1244,16 @@ int sha1_object_info(const unsigned char *sha1, char *type, unsigned long *sizep
if (!map) {
struct pack_entry e;
if (!map) {
struct pack_entry e;
- if (find_pack_entry(sha1, &e))
- return packed_object_info(&e, type, sizep);
- reprepare_packed_git();
- if (find_pack_entry(sha1, &e))
- return packed_object_info(&e, type, sizep);
- return error("unable to find %s", sha1_to_hex(sha1));
+ if (!find_pack_entry(sha1, &e, NULL)) {
+ reprepare_packed_git();
+ if (!find_pack_entry(sha1, &e, NULL))
+ return error("unable to find %s", sha1_to_hex(sha1));
+ }
+ if (use_packed_git(e.p))
+ die("cannot map packed file");
+ status = packed_object_info(e.p, e.offset, type, sizep);
+ unuse_packed_git(e.p);
+ return status;
}
if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
status = error("unable to unpack %s header",
}
if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
status = error("unable to unpack %s header",
@@ -1285,7 +1274,7 @@ static void *read_packed_sha1(const unsigned char *sha1, char *type, unsigned lo
{
struct pack_entry e;
{
struct pack_entry e;
- if (!find_pack_entry(sha1, &e)) {
+ if (!find_pack_entry(sha1, &e, NULL)) {
error("cannot read sha1_file for %s", sha1_to_hex(sha1));
return NULL;
}
error("cannot read sha1_file for %s", sha1_to_hex(sha1));
return NULL;
}
@@ -1298,7 +1287,7 @@ void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size
void *map, *buf;
struct pack_entry e;
void *map, *buf;
struct pack_entry e;
- if (find_pack_entry(sha1, &e))
+ if (find_pack_entry(sha1, &e, NULL))
return read_packed_sha1(sha1, type, size);
map = map_sha1_file(sha1, &mapsize);
if (map) {
return read_packed_sha1(sha1, type, size);
map = map_sha1_file(sha1, &mapsize);
if (map) {
@@ -1307,7 +1296,7 @@ void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size
return buf;
}
reprepare_packed_git();
return buf;
}
reprepare_packed_git();
- if (find_pack_entry(sha1, &e))
+ if (find_pack_entry(sha1, &e, NULL))
return read_packed_sha1(sha1, type, size);
return NULL;
}
return read_packed_sha1(sha1, type, size);
return NULL;
}
unsigned long isize;
unsigned char actual_sha1[20];
unsigned long isize;
unsigned char actual_sha1[20];
- memcpy(actual_sha1, sha1, 20);
+ hashcpy(actual_sha1, sha1);
while (1) {
int ref_length = -1;
const char *ref_type = NULL;
while (1) {
int ref_length = -1;
const char *ref_type = NULL;
if (!strcmp(type, required_type)) {
*size = isize;
if (actual_sha1_return)
if (!strcmp(type, required_type)) {
*size = isize;
if (actual_sha1_return)
- memcpy(actual_sha1_return, actual_sha1, 20);
+ hashcpy(actual_sha1_return, actual_sha1);
return buffer;
}
/* Handle references */
return buffer;
}
/* Handle references */
*
* Returns the errno on failure, 0 on success.
*/
*
* Returns the errno on failure, 0 on success.
*/
-static int link_temp_to_file(const char *tmpfile, char *filename)
+static int link_temp_to_file(const char *tmpfile, const char *filename)
{
int ret;
char *dir;
{
int ret;
char *dir;
/*
* Move the just written object into its final resting place
*/
/*
* Move the just written object into its final resting place
*/
-int move_temp_to_file(const char *tmpfile, char *filename)
+int move_temp_to_file(const char *tmpfile, const char *filename)
{
int ret = link_temp_to_file(tmpfile, filename);
{
int ret = link_temp_to_file(tmpfile, filename);
@@ -1528,7 +1517,7 @@ int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned cha
*/
filename = write_sha1_file_prepare(buf, len, type, sha1, hdr, &hdrlen);
if (returnsha1)
*/
filename = write_sha1_file_prepare(buf, len, type, sha1, hdr, &hdrlen);
if (returnsha1)
- memcpy(returnsha1, sha1, 20);
+ hashcpy(returnsha1, sha1);
if (has_sha1_file(sha1))
return 0;
fd = open(filename, O_RDONLY);
if (has_sha1_file(sha1))
return 0;
fd = open(filename, O_RDONLY);
unlink(tmpfile);
return error("File %s corrupted", sha1_to_hex(sha1));
}
unlink(tmpfile);
return error("File %s corrupted", sha1_to_hex(sha1));
}
- if (memcmp(sha1, real_sha1, 20)) {
+ if (hashcmp(sha1, real_sha1)) {
unlink(tmpfile);
return error("File %s has bad hash", sha1_to_hex(sha1));
}
unlink(tmpfile);
return error("File %s has bad hash", sha1_to_hex(sha1));
}
return 1;
}
return 1;
}
-int has_sha1_pack(const unsigned char *sha1)
+int has_sha1_pack(const unsigned char *sha1, const char **ignore_packed)
{
struct pack_entry e;
{
struct pack_entry e;
- return find_pack_entry(sha1, &e);
+ return find_pack_entry(sha1, &e, ignore_packed);
}
int has_sha1_file(const unsigned char *sha1)
}
int has_sha1_file(const unsigned char *sha1)
struct stat st;
struct pack_entry e;
struct stat st;
struct pack_entry e;
- if (find_pack_entry(sha1, &e))
+ if (find_pack_entry(sha1, &e, NULL))
return 1;
return find_sha1_file(sha1, &st) ? 1 : 0;
}
return 1;
return find_sha1_file(sha1, &st) ? 1 : 0;
}
off += iret;
if (off == size) {
size *= 2;
off += iret;
if (off == size) {
size *= 2;
- buf = realloc(buf, size);
+ buf = xrealloc(buf, size);
}
}
} while (iret > 0);
}
}
} while (iret > 0);
int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object)
{
unsigned long size = 4096;
int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object)
{
unsigned long size = 4096;
- char *buf = malloc(size);
+ char *buf = xmalloc(size);
int ret;
unsigned char hdr[50];
int hdrlen;
int ret;
unsigned char hdr[50];
int hdrlen;