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Diffstat (limited to 'pack-write.c')
-rw-r--r--pack-write.c150
1 files changed, 80 insertions, 70 deletions
diff --git a/pack-write.c b/pack-write.c
index 7297fd7b37..685d327d80 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -13,7 +13,7 @@ static int sha1_compare(const void *_a, const void *_b)
{
struct pack_idx_entry *a = *(struct pack_idx_entry **)_a;
struct pack_idx_entry *b = *(struct pack_idx_entry **)_b;
- return hashcmp(a->sha1, b->sha1);
+ return oidcmp(&a->oid, &b->oid);
}
static int cmp_uint32(const void *a_, const void *b_)
@@ -45,7 +45,7 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
int nr_objects, const struct pack_idx_option *opts,
const unsigned char *sha1)
{
- struct sha1file *f;
+ struct hashfile *f;
struct pack_idx_entry **sorted_by_sha, **list, **last;
off_t last_obj_offset = 0;
uint32_t array[256];
@@ -60,27 +60,26 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
if (objects[i]->offset > last_obj_offset)
last_obj_offset = objects[i]->offset;
}
- qsort(sorted_by_sha, nr_objects, sizeof(sorted_by_sha[0]),
- sha1_compare);
+ QSORT(sorted_by_sha, nr_objects, sha1_compare);
}
else
sorted_by_sha = list = last = NULL;
if (opts->flags & WRITE_IDX_VERIFY) {
assert(index_name);
- f = sha1fd_check(index_name);
+ f = hashfd_check(index_name);
} else {
if (!index_name) {
- static char tmp_file[PATH_MAX];
- fd = odb_mkstemp(tmp_file, sizeof(tmp_file), "pack/tmp_idx_XXXXXX");
- index_name = xstrdup(tmp_file);
+ struct strbuf tmp_file = STRBUF_INIT;
+ fd = odb_mkstemp(&tmp_file, "pack/tmp_idx_XXXXXX");
+ index_name = strbuf_detach(&tmp_file, NULL);
} else {
unlink(index_name);
fd = open(index_name, O_CREAT|O_EXCL|O_WRONLY, 0600);
+ if (fd < 0)
+ die_errno("unable to create '%s'", index_name);
}
- if (fd < 0)
- die_errno("unable to create '%s'", index_name);
- f = sha1fd(fd, index_name);
+ f = hashfd(fd, index_name);
}
/* if last object's offset is >= 2^31 we should use index V2 */
@@ -91,7 +90,7 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
struct pack_idx_header hdr;
hdr.idx_signature = htonl(PACK_IDX_SIGNATURE);
hdr.idx_version = htonl(index_version);
- sha1write(f, &hdr, sizeof(hdr));
+ hashwrite(f, &hdr, sizeof(hdr));
}
/*
@@ -103,14 +102,14 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
struct pack_idx_entry **next = list;
while (next < last) {
struct pack_idx_entry *obj = *next;
- if (obj->sha1[0] != i)
+ if (obj->oid.hash[0] != i)
break;
next++;
}
array[i] = htonl(next - sorted_by_sha);
list = next;
}
- sha1write(f, array, 256 * 4);
+ hashwrite(f, array, 256 * 4);
/*
* Write the actual SHA1 entries..
@@ -120,13 +119,13 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
struct pack_idx_entry *obj = *list++;
if (index_version < 2) {
uint32_t offset = htonl(obj->offset);
- sha1write(f, &offset, 4);
+ hashwrite(f, &offset, 4);
}
- sha1write(f, obj->sha1, 20);
+ hashwrite(f, obj->oid.hash, the_hash_algo->rawsz);
if ((opts->flags & WRITE_IDX_STRICT) &&
- (i && !hashcmp(list[-2]->sha1, obj->sha1)))
+ (i && oideq(&list[-2]->oid, &obj->oid)))
die("The same object %s appears twice in the pack",
- sha1_to_hex(obj->sha1));
+ oid_to_hex(&obj->oid));
}
if (index_version >= 2) {
@@ -137,7 +136,7 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
for (i = 0; i < nr_objects; i++) {
struct pack_idx_entry *obj = *list++;
uint32_t crc32_val = htonl(obj->crc32);
- sha1write(f, &crc32_val, 4);
+ hashwrite(f, &crc32_val, 4);
}
/* write the 32-bit offset table */
@@ -150,7 +149,7 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
? (0x80000000 | nr_large_offset++)
: obj->offset);
offset = htonl(offset);
- sha1write(f, &offset, 4);
+ hashwrite(f, &offset, 4);
}
/* write the large offset table */
@@ -164,26 +163,26 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
continue;
split[0] = htonl(offset >> 32);
split[1] = htonl(offset & 0xffffffff);
- sha1write(f, split, 8);
+ hashwrite(f, split, 8);
nr_large_offset--;
}
}
- sha1write(f, sha1, 20);
- sha1close(f, NULL, ((opts->flags & WRITE_IDX_VERIFY)
- ? CSUM_CLOSE : CSUM_FSYNC));
+ hashwrite(f, sha1, the_hash_algo->rawsz);
+ finalize_hashfile(f, NULL, CSUM_HASH_IN_STREAM | CSUM_CLOSE |
+ ((opts->flags & WRITE_IDX_VERIFY)
+ ? 0 : CSUM_FSYNC));
return index_name;
}
-off_t write_pack_header(struct sha1file *f, uint32_t nr_entries)
+off_t write_pack_header(struct hashfile *f, uint32_t nr_entries)
{
struct pack_header hdr;
hdr.hdr_signature = htonl(PACK_SIGNATURE);
hdr.hdr_version = htonl(PACK_VERSION);
hdr.hdr_entries = htonl(nr_entries);
- if (sha1write(f, &hdr, sizeof(hdr)))
- return 0;
+ hashwrite(f, &hdr, sizeof(hdr));
return sizeof(hdr);
}
@@ -204,29 +203,34 @@ off_t write_pack_header(struct sha1file *f, uint32_t nr_entries)
* interested in the resulting SHA1 of pack data above partial_pack_offset.
*/
void fixup_pack_header_footer(int pack_fd,
- unsigned char *new_pack_sha1,
+ unsigned char *new_pack_hash,
const char *pack_name,
uint32_t object_count,
- unsigned char *partial_pack_sha1,
+ unsigned char *partial_pack_hash,
off_t partial_pack_offset)
{
int aligned_sz, buf_sz = 8 * 1024;
- git_SHA_CTX old_sha1_ctx, new_sha1_ctx;
+ git_hash_ctx old_hash_ctx, new_hash_ctx;
struct pack_header hdr;
char *buf;
+ ssize_t read_result;
- git_SHA1_Init(&old_sha1_ctx);
- git_SHA1_Init(&new_sha1_ctx);
+ the_hash_algo->init_fn(&old_hash_ctx);
+ the_hash_algo->init_fn(&new_hash_ctx);
if (lseek(pack_fd, 0, SEEK_SET) != 0)
die_errno("Failed seeking to start of '%s'", pack_name);
- if (read_in_full(pack_fd, &hdr, sizeof(hdr)) != sizeof(hdr))
+ read_result = read_in_full(pack_fd, &hdr, sizeof(hdr));
+ if (read_result < 0)
die_errno("Unable to reread header of '%s'", pack_name);
+ else if (read_result != sizeof(hdr))
+ die_errno("Unexpected short read for header of '%s'",
+ pack_name);
if (lseek(pack_fd, 0, SEEK_SET) != 0)
die_errno("Failed seeking to start of '%s'", pack_name);
- git_SHA1_Update(&old_sha1_ctx, &hdr, sizeof(hdr));
+ the_hash_algo->update_fn(&old_hash_ctx, &hdr, sizeof(hdr));
hdr.hdr_entries = htonl(object_count);
- git_SHA1_Update(&new_sha1_ctx, &hdr, sizeof(hdr));
+ the_hash_algo->update_fn(&new_hash_ctx, &hdr, sizeof(hdr));
write_or_die(pack_fd, &hdr, sizeof(hdr));
partial_pack_offset -= sizeof(hdr);
@@ -234,28 +238,28 @@ void fixup_pack_header_footer(int pack_fd,
aligned_sz = buf_sz - sizeof(hdr);
for (;;) {
ssize_t m, n;
- m = (partial_pack_sha1 && partial_pack_offset < aligned_sz) ?
+ m = (partial_pack_hash && partial_pack_offset < aligned_sz) ?
partial_pack_offset : aligned_sz;
n = xread(pack_fd, buf, m);
if (!n)
break;
if (n < 0)
die_errno("Failed to checksum '%s'", pack_name);
- git_SHA1_Update(&new_sha1_ctx, buf, n);
+ the_hash_algo->update_fn(&new_hash_ctx, buf, n);
aligned_sz -= n;
if (!aligned_sz)
aligned_sz = buf_sz;
- if (!partial_pack_sha1)
+ if (!partial_pack_hash)
continue;
- git_SHA1_Update(&old_sha1_ctx, buf, n);
+ the_hash_algo->update_fn(&old_hash_ctx, buf, n);
partial_pack_offset -= n;
if (partial_pack_offset == 0) {
- unsigned char sha1[20];
- git_SHA1_Final(sha1, &old_sha1_ctx);
- if (hashcmp(sha1, partial_pack_sha1) != 0)
+ unsigned char hash[GIT_MAX_RAWSZ];
+ the_hash_algo->final_fn(hash, &old_hash_ctx);
+ if (!hasheq(hash, partial_pack_hash))
die("Unexpected checksum for %s "
"(disk corruption?)", pack_name);
/*
@@ -263,23 +267,24 @@ void fixup_pack_header_footer(int pack_fd,
* pack, which also means making partial_pack_offset
* big enough not to matter anymore.
*/
- git_SHA1_Init(&old_sha1_ctx);
+ the_hash_algo->init_fn(&old_hash_ctx);
partial_pack_offset = ~partial_pack_offset;
partial_pack_offset -= MSB(partial_pack_offset, 1);
}
}
free(buf);
- if (partial_pack_sha1)
- git_SHA1_Final(partial_pack_sha1, &old_sha1_ctx);
- git_SHA1_Final(new_pack_sha1, &new_sha1_ctx);
- write_or_die(pack_fd, new_pack_sha1, 20);
+ if (partial_pack_hash)
+ the_hash_algo->final_fn(partial_pack_hash, &old_hash_ctx);
+ the_hash_algo->final_fn(new_pack_hash, &new_hash_ctx);
+ write_or_die(pack_fd, new_pack_hash, the_hash_algo->rawsz);
fsync_or_die(pack_fd, pack_name);
}
char *index_pack_lockfile(int ip_out)
{
- char packname[46];
+ char packname[GIT_MAX_HEXSZ + 6];
+ const int len = the_hash_algo->hexsz + 6;
/*
* The first thing we expect from index-pack's output
@@ -288,13 +293,12 @@ char *index_pack_lockfile(int ip_out)
* case, we need it to remove the corresponding .keep file
* later on. If we don't get that then tough luck with it.
*/
- if (read_in_full(ip_out, packname, 46) == 46 && packname[45] == '\n' &&
- memcmp(packname, "keep\t", 5) == 0) {
- char path[PATH_MAX];
- packname[45] = 0;
- snprintf(path, sizeof(path), "%s/pack/pack-%s.keep",
- get_object_directory(), packname + 5);
- return xstrdup(path);
+ if (read_in_full(ip_out, packname, len) == len && packname[len-1] == '\n') {
+ const char *name;
+ packname[len-1] = 0;
+ if (skip_prefix(packname, "keep\t", &name))
+ return xstrfmt("%s/pack/pack-%s.keep",
+ get_object_directory(), name);
}
return NULL;
}
@@ -306,7 +310,8 @@ char *index_pack_lockfile(int ip_out)
* - each byte afterwards: low seven bits are size continuation,
* with the high bit being "size continues"
*/
-int encode_in_pack_object_header(enum object_type type, uintmax_t size, unsigned char *hdr)
+int encode_in_pack_object_header(unsigned char *hdr, int hdr_len,
+ enum object_type type, uintmax_t size)
{
int n = 1;
unsigned char c;
@@ -317,6 +322,8 @@ int encode_in_pack_object_header(enum object_type type, uintmax_t size, unsigned
c = (type << 4) | (size & 15);
size >>= 4;
while (size) {
+ if (n == hdr_len)
+ die("object size is too enormous to format");
*hdr++ = c | 0x80;
c = size & 0x7f;
size >>= 7;
@@ -326,43 +333,46 @@ int encode_in_pack_object_header(enum object_type type, uintmax_t size, unsigned
return n;
}
-struct sha1file *create_tmp_packfile(char **pack_tmp_name)
+struct hashfile *create_tmp_packfile(char **pack_tmp_name)
{
- char tmpname[PATH_MAX];
+ struct strbuf tmpname = STRBUF_INIT;
int fd;
- fd = odb_mkstemp(tmpname, sizeof(tmpname), "pack/tmp_pack_XXXXXX");
- *pack_tmp_name = xstrdup(tmpname);
- return sha1fd(fd, *pack_tmp_name);
+ fd = odb_mkstemp(&tmpname, "pack/tmp_pack_XXXXXX");
+ *pack_tmp_name = strbuf_detach(&tmpname, NULL);
+ return hashfd(fd, *pack_tmp_name);
}
-void finish_tmp_packfile(char *name_buffer,
+void finish_tmp_packfile(struct strbuf *name_buffer,
const char *pack_tmp_name,
struct pack_idx_entry **written_list,
uint32_t nr_written,
struct pack_idx_option *pack_idx_opts,
- unsigned char sha1[])
+ unsigned char hash[])
{
const char *idx_tmp_name;
- char *end_of_name_prefix = strrchr(name_buffer, 0);
+ int basename_len = name_buffer->len;
if (adjust_shared_perm(pack_tmp_name))
die_errno("unable to make temporary pack file readable");
idx_tmp_name = write_idx_file(NULL, written_list, nr_written,
- pack_idx_opts, sha1);
+ pack_idx_opts, hash);
if (adjust_shared_perm(idx_tmp_name))
die_errno("unable to make temporary index file readable");
- sprintf(end_of_name_prefix, "%s.pack", sha1_to_hex(sha1));
- free_pack_by_name(name_buffer);
+ strbuf_addf(name_buffer, "%s.pack", hash_to_hex(hash));
- if (rename(pack_tmp_name, name_buffer))
+ if (rename(pack_tmp_name, name_buffer->buf))
die_errno("unable to rename temporary pack file");
- sprintf(end_of_name_prefix, "%s.idx", sha1_to_hex(sha1));
- if (rename(idx_tmp_name, name_buffer))
+ strbuf_setlen(name_buffer, basename_len);
+
+ strbuf_addf(name_buffer, "%s.idx", hash_to_hex(hash));
+ if (rename(idx_tmp_name, name_buffer->buf))
die_errno("unable to rename temporary index file");
+ strbuf_setlen(name_buffer, basename_len);
+
free((void *)idx_tmp_name);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-10 17:17:19 +0300