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-rw-r--r--pack-write.c77
1 files changed, 51 insertions, 26 deletions
diff --git a/pack-write.c b/pack-write.c
index 3621f1dd32..a905ca4486 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -17,15 +17,15 @@ static int sha1_compare(const void *_a, const void *_b)
* the SHA1 hash of sorted object names. The objects array passed in
* will be sorted by SHA1 on exit.
*/
-char *write_idx_file(char *index_name, struct pack_idx_entry **objects,
- int nr_objects, unsigned char *sha1)
+const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects,
+ int nr_objects, unsigned char *sha1)
{
struct sha1file *f;
struct pack_idx_entry **sorted_by_sha, **list, **last;
off_t last_obj_offset = 0;
uint32_t array[256];
int i, fd;
- SHA_CTX ctx;
+ git_SHA_CTX ctx;
uint32_t index_version;
if (nr_objects) {
@@ -44,16 +44,14 @@ char *write_idx_file(char *index_name, struct pack_idx_entry **objects,
if (!index_name) {
static char tmpfile[PATH_MAX];
- snprintf(tmpfile, sizeof(tmpfile),
- "%s/pack/tmp_idx_XXXXXX", get_object_directory());
- fd = xmkstemp(tmpfile);
+ fd = odb_mkstemp(tmpfile, sizeof(tmpfile), "pack/tmp_idx_XXXXXX");
index_name = xstrdup(tmpfile);
} else {
unlink(index_name);
fd = open(index_name, O_CREAT|O_EXCL|O_WRONLY, 0600);
}
if (fd < 0)
- die("unable to create %s: %s", index_name, strerror(errno));
+ die_errno("unable to create '%s'", index_name);
f = sha1fd(fd, index_name);
/* if last object's offset is >= 2^31 we should use index V2 */
@@ -86,7 +84,7 @@ char *write_idx_file(char *index_name, struct pack_idx_entry **objects,
sha1write(f, array, 256 * 4);
/* compute the SHA1 hash of sorted object names. */
- SHA1_Init(&ctx);
+ git_SHA1_Init(&ctx);
/*
* Write the actual SHA1 entries..
@@ -99,7 +97,7 @@ char *write_idx_file(char *index_name, struct pack_idx_entry **objects,
sha1write(f, &offset, 4);
}
sha1write(f, obj->sha1, 20);
- SHA1_Update(&ctx, obj->sha1, 20);
+ git_SHA1_Update(&ctx, obj->sha1, 20);
}
if (index_version >= 2) {
@@ -140,7 +138,7 @@ char *write_idx_file(char *index_name, struct pack_idx_entry **objects,
sha1write(f, sha1, 20);
sha1close(f, NULL, CSUM_FSYNC);
- SHA1_Final(sha1, &ctx);
+ git_SHA1_Final(sha1, &ctx);
return index_name;
}
@@ -168,22 +166,22 @@ void fixup_pack_header_footer(int pack_fd,
off_t partial_pack_offset)
{
int aligned_sz, buf_sz = 8 * 1024;
- SHA_CTX old_sha1_ctx, new_sha1_ctx;
+ git_SHA_CTX old_sha1_ctx, new_sha1_ctx;
struct pack_header hdr;
char *buf;
- SHA1_Init(&old_sha1_ctx);
- SHA1_Init(&new_sha1_ctx);
+ git_SHA1_Init(&old_sha1_ctx);
+ git_SHA1_Init(&new_sha1_ctx);
if (lseek(pack_fd, 0, SEEK_SET) != 0)
- die("Failed seeking to start of %s: %s", pack_name, strerror(errno));
+ die_errno("Failed seeking to start of '%s'", pack_name);
if (read_in_full(pack_fd, &hdr, sizeof(hdr)) != sizeof(hdr))
- die("Unable to reread header of %s: %s", pack_name, strerror(errno));
+ die_errno("Unable to reread header of '%s'", pack_name);
if (lseek(pack_fd, 0, SEEK_SET) != 0)
- die("Failed seeking to start of %s: %s", pack_name, strerror(errno));
- SHA1_Update(&old_sha1_ctx, &hdr, sizeof(hdr));
+ die_errno("Failed seeking to start of '%s'", pack_name);
+ git_SHA1_Update(&old_sha1_ctx, &hdr, sizeof(hdr));
hdr.hdr_entries = htonl(object_count);
- SHA1_Update(&new_sha1_ctx, &hdr, sizeof(hdr));
+ git_SHA1_Update(&new_sha1_ctx, &hdr, sizeof(hdr));
write_or_die(pack_fd, &hdr, sizeof(hdr));
partial_pack_offset -= sizeof(hdr);
@@ -197,8 +195,8 @@ void fixup_pack_header_footer(int pack_fd,
if (!n)
break;
if (n < 0)
- die("Failed to checksum %s: %s", pack_name, strerror(errno));
- SHA1_Update(&new_sha1_ctx, buf, n);
+ die_errno("Failed to checksum '%s'", pack_name);
+ git_SHA1_Update(&new_sha1_ctx, buf, n);
aligned_sz -= n;
if (!aligned_sz)
@@ -207,11 +205,11 @@ void fixup_pack_header_footer(int pack_fd,
if (!partial_pack_sha1)
continue;
- SHA1_Update(&old_sha1_ctx, buf, n);
+ git_SHA1_Update(&old_sha1_ctx, buf, n);
partial_pack_offset -= n;
if (partial_pack_offset == 0) {
unsigned char sha1[20];
- SHA1_Final(sha1, &old_sha1_ctx);
+ git_SHA1_Final(sha1, &old_sha1_ctx);
if (hashcmp(sha1, partial_pack_sha1) != 0)
die("Unexpected checksum for %s "
"(disk corruption?)", pack_name);
@@ -220,7 +218,7 @@ void fixup_pack_header_footer(int pack_fd,
* pack, which also means making partial_pack_offset
* big enough not to matter anymore.
*/
- SHA1_Init(&old_sha1_ctx);
+ git_SHA1_Init(&old_sha1_ctx);
partial_pack_offset = ~partial_pack_offset;
partial_pack_offset -= MSB(partial_pack_offset, 1);
}
@@ -228,8 +226,8 @@ void fixup_pack_header_footer(int pack_fd,
free(buf);
if (partial_pack_sha1)
- SHA1_Final(partial_pack_sha1, &old_sha1_ctx);
- SHA1_Final(new_pack_sha1, &new_sha1_ctx);
+ 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);
fsync_or_die(pack_fd, pack_name);
}
@@ -239,7 +237,7 @@ char *index_pack_lockfile(int ip_out)
char packname[46];
/*
- * The first thing we expects from index-pack's output
+ * The first thing we expect from index-pack's output
* is "pack\t%40s\n" or "keep\t%40s\n" (46 bytes) where
* %40s is the newly created pack SHA1 name. In the "keep"
* case, we need it to remove the corresponding .keep file
@@ -255,3 +253,30 @@ char *index_pack_lockfile(int ip_out)
}
return NULL;
}
+
+/*
+ * The per-object header is a pretty dense thing, which is
+ * - first byte: low four bits are "size", then three bits of "type",
+ * and the high bit is "size continues".
+ * - 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 n = 1;
+ unsigned char c;
+
+ if (type < OBJ_COMMIT || type > OBJ_REF_DELTA)
+ die("bad type %d", type);
+
+ c = (type << 4) | (size & 15);
+ size >>= 4;
+ while (size) {
+ *hdr++ = c | 0x80;
+ c = size & 0x7f;
+ size >>= 7;
+ n++;
+ }
+ *hdr = c;
+ return n;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 22:24:50 +0000