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Diffstat (limited to 'builtin/index-pack.c')
-rw-r--r--builtin/index-pack.c142
1 files changed, 78 insertions, 64 deletions
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 1d2ea583a4..ad4de35178 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -1,4 +1,5 @@
#include "builtin.h"
+#include "config.h"
#include "delta.h"
#include "pack.h"
#include "csum-file.h"
@@ -87,6 +88,7 @@ static struct progress *progress;
static unsigned char input_buffer[4096];
static unsigned int input_offset, input_len;
static off_t consumed_bytes;
+static off_t max_input_size;
static unsigned deepest_delta;
static git_SHA_CTX input_ctx;
static uint32_t input_crc32;
@@ -297,6 +299,8 @@ static void use(int bytes)
if (signed_add_overflows(consumed_bytes, bytes))
die(_("pack too large for current definition of off_t"));
consumed_bytes += bytes;
+ if (max_input_size && consumed_bytes > max_input_size)
+ die(_("pack exceeds maximum allowed size"));
}
static const char *open_pack_file(const char *pack_name)
@@ -304,14 +308,15 @@ static const char *open_pack_file(const char *pack_name)
if (from_stdin) {
input_fd = 0;
if (!pack_name) {
- static char tmp_file[PATH_MAX];
- output_fd = odb_mkstemp(tmp_file, sizeof(tmp_file),
+ struct strbuf tmp_file = STRBUF_INIT;
+ output_fd = odb_mkstemp(&tmp_file,
"pack/tmp_pack_XXXXXX");
- pack_name = xstrdup(tmp_file);
- } else
+ pack_name = strbuf_detach(&tmp_file, NULL);
+ } else {
output_fd = open(pack_name, O_CREAT|O_EXCL|O_RDWR, 0600);
- if (output_fd < 0)
- die_errno(_("unable to create '%s'"), pack_name);
+ if (output_fd < 0)
+ die_errno(_("unable to create '%s'"), pack_name);
+ }
nothread_data.pack_fd = output_fd;
} else {
input_fd = open(pack_name, O_RDONLY);
@@ -384,8 +389,7 @@ static struct base_data *alloc_base_data(void)
static void free_base_data(struct base_data *c)
{
if (c->data) {
- free(c->data);
- c->data = NULL;
+ FREE_AND_NULL(c->data);
get_thread_data()->base_cache_used -= c->size;
}
}
@@ -601,8 +605,7 @@ static void *unpack_data(struct object_entry *obj,
git_inflate_end(&stream);
free(inbuf);
if (consume) {
- free(data);
- data = NULL;
+ FREE_AND_NULL(data);
}
return data;
}
@@ -743,13 +746,13 @@ static int compare_objects(const unsigned char *buf, unsigned long size,
ssize_t len = read_istream(data->st, data->buf, size);
if (len == 0)
die(_("SHA1 COLLISION FOUND WITH %s !"),
- sha1_to_hex(data->entry->idx.sha1));
+ oid_to_hex(&data->entry->idx.oid));
if (len < 0)
die(_("unable to read %s"),
- sha1_to_hex(data->entry->idx.sha1));
+ oid_to_hex(&data->entry->idx.oid));
if (memcmp(buf, data->buf, len))
die(_("SHA1 COLLISION FOUND WITH %s !"),
- sha1_to_hex(data->entry->idx.sha1));
+ oid_to_hex(&data->entry->idx.oid));
size -= len;
buf += len;
}
@@ -767,12 +770,12 @@ static int check_collison(struct object_entry *entry)
memset(&data, 0, sizeof(data));
data.entry = entry;
- data.st = open_istream(entry->idx.sha1, &type, &size, NULL);
+ data.st = open_istream(entry->idx.oid.hash, &type, &size, NULL);
if (!data.st)
return -1;
if (size != entry->size || type != entry->type)
die(_("SHA1 COLLISION FOUND WITH %s !"),
- sha1_to_hex(entry->idx.sha1));
+ oid_to_hex(&entry->idx.oid));
unpack_data(entry, compare_objects, &data);
close_istream(data.st);
free(data.buf);
@@ -781,16 +784,18 @@ static int check_collison(struct object_entry *entry)
static void sha1_object(const void *data, struct object_entry *obj_entry,
unsigned long size, enum object_type type,
- const unsigned char *sha1)
+ const struct object_id *oid)
{
void *new_data = NULL;
- int collision_test_needed;
+ int collision_test_needed = 0;
assert(data || obj_entry);
- read_lock();
- collision_test_needed = has_sha1_file_with_flags(sha1, HAS_SHA1_QUICK);
- read_unlock();
+ if (startup_info->have_repository) {
+ read_lock();
+ collision_test_needed = has_sha1_file_with_flags(oid->hash, HAS_SHA1_QUICK);
+ read_unlock();
+ }
if (collision_test_needed && !data) {
read_lock();
@@ -803,29 +808,31 @@ static void sha1_object(const void *data, struct object_entry *obj_entry,
enum object_type has_type;
unsigned long has_size;
read_lock();
- has_type = sha1_object_info(sha1, &has_size);
+ has_type = sha1_object_info(oid->hash, &has_size);
+ if (has_type < 0)
+ die(_("cannot read existing object info %s"), oid_to_hex(oid));
if (has_type != type || has_size != size)
- die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1));
- has_data = read_sha1_file(sha1, &has_type, &has_size);
+ die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid));
+ has_data = read_sha1_file(oid->hash, &has_type, &has_size);
read_unlock();
if (!data)
data = new_data = get_data_from_pack(obj_entry);
if (!has_data)
- die(_("cannot read existing object %s"), sha1_to_hex(sha1));
+ die(_("cannot read existing object %s"), oid_to_hex(oid));
if (size != has_size || type != has_type ||
memcmp(data, has_data, size) != 0)
- die(_("SHA1 COLLISION FOUND WITH %s !"), sha1_to_hex(sha1));
+ die(_("SHA1 COLLISION FOUND WITH %s !"), oid_to_hex(oid));
free(has_data);
}
if (strict) {
read_lock();
if (type == OBJ_BLOB) {
- struct blob *blob = lookup_blob(sha1);
+ struct blob *blob = lookup_blob(oid);
if (blob)
blob->object.flags |= FLAG_CHECKED;
else
- die(_("invalid blob object %s"), sha1_to_hex(sha1));
+ die(_("invalid blob object %s"), oid_to_hex(oid));
} else {
struct object *obj;
int eaten;
@@ -837,7 +844,8 @@ static void sha1_object(const void *data, struct object_entry *obj_entry,
* we do not need to free the memory here, as the
* buf is deleted by the caller.
*/
- obj = parse_object_buffer(sha1, type, size, buf, &eaten);
+ obj = parse_object_buffer(oid, type, size, buf,
+ &eaten);
if (!obj)
die(_("invalid %s"), typename(type));
if (do_fsck_object &&
@@ -949,9 +957,10 @@ static void resolve_delta(struct object_entry *delta_obj,
if (!result->data)
bad_object(delta_obj->idx.offset, _("failed to apply delta"));
hash_sha1_file(result->data, result->size,
- typename(delta_obj->real_type), delta_obj->idx.sha1);
+ typename(delta_obj->real_type),
+ delta_obj->idx.oid.hash);
sha1_object(result->data, NULL, result->size, delta_obj->real_type,
- delta_obj->idx.sha1);
+ &delta_obj->idx.oid);
counter_lock();
nr_resolved_deltas++;
counter_unlock();
@@ -981,7 +990,7 @@ static struct base_data *find_unresolved_deltas_1(struct base_data *base,
struct base_data *prev_base)
{
if (base->ref_last == -1 && base->ofs_last == -1) {
- find_ref_delta_children(base->obj->idx.sha1,
+ find_ref_delta_children(base->obj->idx.oid.hash,
&base->ref_first, &base->ref_last,
OBJ_REF_DELTA);
@@ -1122,7 +1131,8 @@ static void parse_pack_objects(unsigned char *sha1)
for (i = 0; i < nr_objects; i++) {
struct object_entry *obj = &objects[i];
void *data = unpack_raw_entry(obj, &ofs_delta->offset,
- ref_delta_sha1, obj->idx.sha1);
+ ref_delta_sha1,
+ obj->idx.oid.hash);
obj->real_type = obj->type;
if (obj->type == OBJ_OFS_DELTA) {
nr_ofs_deltas++;
@@ -1138,7 +1148,8 @@ static void parse_pack_objects(unsigned char *sha1)
obj->real_type = OBJ_BAD;
nr_delays++;
} else
- sha1_object(data, NULL, obj->size, obj->type, obj->idx.sha1);
+ sha1_object(data, NULL, obj->size, obj->type,
+ &obj->idx.oid);
free(data);
display_progress(progress, i+1);
}
@@ -1164,7 +1175,8 @@ static void parse_pack_objects(unsigned char *sha1)
if (obj->real_type != OBJ_BAD)
continue;
obj->real_type = obj->type;
- sha1_object(NULL, obj, obj->size, obj->type, obj->idx.sha1);
+ sha1_object(NULL, obj, obj->size, obj->type,
+ &obj->idx.oid);
nr_delays--;
}
if (nr_delays)
@@ -1187,10 +1199,8 @@ static void resolve_deltas(void)
return;
/* Sort deltas by base SHA1/offset for fast searching */
- qsort(ofs_deltas, nr_ofs_deltas, sizeof(struct ofs_delta_entry),
- compare_ofs_delta_entry);
- qsort(ref_deltas, nr_ref_deltas, sizeof(struct ref_delta_entry),
- compare_ref_delta_entry);
+ QSORT(ofs_deltas, nr_ofs_deltas, compare_ofs_delta_entry);
+ QSORT(ref_deltas, nr_ref_deltas, compare_ref_delta_entry);
if (verbose || show_resolving_progress)
progress = start_progress(_("Resolving deltas"),
@@ -1324,7 +1334,7 @@ static struct object_entry *append_obj_to_pack(struct sha1file *f,
obj[1].idx.offset += write_compressed(f, buf, size);
obj[0].idx.crc32 = crc32_end(f);
sha1flush(f);
- hashcpy(obj->idx.sha1, sha1);
+ hashcpy(obj->idx.oid.hash, sha1);
return obj;
}
@@ -1353,7 +1363,7 @@ static void fix_unresolved_deltas(struct sha1file *f)
ALLOC_ARRAY(sorted_by_pos, nr_ref_deltas);
for (i = 0; i < nr_ref_deltas; i++)
sorted_by_pos[i] = &ref_deltas[i];
- qsort(sorted_by_pos, nr_ref_deltas, sizeof(*sorted_by_pos), delta_pos_compare);
+ QSORT(sorted_by_pos, nr_ref_deltas, delta_pos_compare);
for (i = 0; i < nr_ref_deltas; i++) {
struct ref_delta_entry *d = sorted_by_pos[i];
@@ -1383,7 +1393,9 @@ static void final(const char *final_pack_name, const char *curr_pack_name,
unsigned char *sha1)
{
const char *report = "pack";
- char name[PATH_MAX];
+ struct strbuf pack_name = STRBUF_INIT;
+ struct strbuf index_name = STRBUF_INIT;
+ struct strbuf keep_name_buf = STRBUF_INIT;
int err;
if (!from_stdin) {
@@ -1399,14 +1411,13 @@ static void final(const char *final_pack_name, const char *curr_pack_name,
int keep_fd, keep_msg_len = strlen(keep_msg);
if (!keep_name)
- keep_fd = odb_pack_keep(name, sizeof(name), sha1);
- else
- keep_fd = open(keep_name, O_RDWR|O_CREAT|O_EXCL, 0600);
+ keep_name = odb_pack_name(&keep_name_buf, sha1, "keep");
+ keep_fd = odb_pack_keep(keep_name);
if (keep_fd < 0) {
if (errno != EEXIST)
die_errno(_("cannot write keep file '%s'"),
- keep_name ? keep_name : name);
+ keep_name);
} else {
if (keep_msg_len > 0) {
write_or_die(keep_fd, keep_msg, keep_msg_len);
@@ -1414,28 +1425,22 @@ static void final(const char *final_pack_name, const char *curr_pack_name,
}
if (close(keep_fd) != 0)
die_errno(_("cannot close written keep file '%s'"),
- keep_name ? keep_name : name);
+ keep_name);
report = "keep";
}
}
if (final_pack_name != curr_pack_name) {
- if (!final_pack_name) {
- snprintf(name, sizeof(name), "%s/pack/pack-%s.pack",
- get_object_directory(), sha1_to_hex(sha1));
- final_pack_name = name;
- }
+ if (!final_pack_name)
+ final_pack_name = odb_pack_name(&pack_name, sha1, "pack");
if (finalize_object_file(curr_pack_name, final_pack_name))
die(_("cannot store pack file"));
} else if (from_stdin)
chmod(final_pack_name, 0444);
if (final_index_name != curr_index_name) {
- if (!final_index_name) {
- snprintf(name, sizeof(name), "%s/pack/pack-%s.idx",
- get_object_directory(), sha1_to_hex(sha1));
- final_index_name = name;
- }
+ if (!final_index_name)
+ final_index_name = odb_pack_name(&index_name, sha1, "idx");
if (finalize_object_file(curr_index_name, final_index_name))
die(_("cannot store index file"));
} else
@@ -1444,10 +1449,11 @@ static void final(const char *final_pack_name, const char *curr_pack_name,
if (!from_stdin) {
printf("%s\n", sha1_to_hex(sha1));
} else {
- char buf[48];
- int len = snprintf(buf, sizeof(buf), "%s\t%s\n",
- report, sha1_to_hex(sha1));
- write_or_die(1, buf, len);
+ struct strbuf buf = STRBUF_INIT;
+
+ strbuf_addf(&buf, "%s\t%s\n", report, sha1_to_hex(sha1));
+ write_or_die(1, buf.buf, buf.len);
+ strbuf_release(&buf);
/*
* Let's just mimic git-unpack-objects here and write
@@ -1461,6 +1467,10 @@ static void final(const char *final_pack_name, const char *curr_pack_name,
input_offset += err;
}
}
+
+ strbuf_release(&index_name);
+ strbuf_release(&pack_name);
+ strbuf_release(&keep_name_buf);
}
static int git_index_pack_config(const char *k, const char *v, void *cb)
@@ -1530,8 +1540,7 @@ static void read_v2_anomalous_offsets(struct packed_git *p,
opts->anomaly[opts->anomaly_nr++] = ntohl(idx2[off * 2 + 1]);
}
- if (1 < opts->anomaly_nr)
- qsort(opts->anomaly, opts->anomaly_nr, sizeof(uint32_t), cmp_uint32);
+ QSORT(opts->anomaly, opts->anomaly_nr, cmp_uint32);
}
static void read_idx_option(struct pack_idx_option *opts, const char *pack_name)
@@ -1576,13 +1585,14 @@ static void show_pack_info(int stat_only)
if (stat_only)
continue;
printf("%s %-6s %lu %lu %"PRIuMAX,
- sha1_to_hex(obj->idx.sha1),
+ oid_to_hex(&obj->idx.oid),
typename(obj->real_type), obj->size,
(unsigned long)(obj[1].idx.offset - obj->idx.offset),
(uintmax_t)obj->idx.offset);
if (is_delta_type(obj->type)) {
struct object_entry *bobj = &objects[obj_stat[i].base_object_no];
- printf(" %u %s", obj_stat[i].delta_depth, sha1_to_hex(bobj->idx.sha1));
+ printf(" %u %s", obj_stat[i].delta_depth,
+ oid_to_hex(&bobj->idx.oid));
}
putchar('\n');
}
@@ -1714,6 +1724,8 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
opts.off32_limit = strtoul(c+1, &c, 0);
if (*c || opts.off32_limit & 0x80000000)
die(_("bad %s"), arg);
+ } else if (skip_prefix(arg, "--max-input-size=", &arg)) {
+ max_input_size = strtoumax(arg, NULL, 10);
} else
usage(index_pack_usage);
continue;
@@ -1728,6 +1740,8 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
usage(index_pack_usage);
if (fix_thin_pack && !from_stdin)
die(_("--fix-thin cannot be used without --stdin"));
+ if (from_stdin && !startup_info->have_repository)
+ die(_("--stdin requires a git repository"));
if (!index_name && pack_name)
index_name = derive_filename(pack_name, ".idx", &index_name_buf);
if (keep_msg && !keep_name && pack_name)
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-22 15:38:42 +0000