#include "exec_cmd.h"
static const char index_pack_usage[] =
-"git index-pack [-v] [-o <index-file>] [
--keep | --keep=<msg> ] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
+"git index-pack [-v] [-o <index-file>] [
--keep | --keep=<msg>] [--verify] [--strict] (<pack-file> | --stdin [--fix-thin] [<pack-file>])";
struct object_entry {
struct pack_idx_entry idx;
unsigned int hdr_size;
enum object_type type;
enum object_type real_type;
+ unsigned delta_depth;
+ int base_object_no;
};
union delta_base {
static unsigned char input_buffer[4096];
static unsigned int input_offset, input_len;
static off_t consumed_bytes;
+static unsigned deepest_delta;
static git_SHA_CTX input_ctx;
static uint32_t input_crc32;
static int input_fd, output_fd, pack_fd;
return data;
}
-static int find_delta(const union delta_base *base)
+static int compare_delta_bases(const union delta_base *base1,
+ const union delta_base *base2,
+ enum object_type type1,
+ enum object_type type2)
+{
+ int cmp = type1 - type2;
+ if (cmp)
+ return cmp;
+ return memcmp(base1, base2, UNION_BASE_SZ);
+}
+
+static int find_delta(const union delta_base *base, enum object_type type)
{
int first = 0, last = nr_deltas;
struct delta_entry *delta = &deltas[next];
int cmp;
- cmp = memcmp(base, &delta->base, UNION_BASE_SZ);
+ cmp = compare_delta_bases(base, &delta->base,
+ type, objects[delta->obj_no].type);
if (!cmp)
return next;
if (cmp < 0) {
}
static void find_delta_children(const union delta_base *base,
- int *first_index, int *last_index)
+ int *first_index, int *last_index,
+ enum object_type type)
{
- int first = find_delta(base);
+ int first = find_delta(base, type);
int last = first;
int end = nr_deltas - 1;
}
}
+static int is_delta_type(enum object_type type)
+{
+ return (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA);
+}
+
static void *get_base_data(struct base_data *c)
{
if (!c->data) {
struct object_entry *obj = c->obj;
- if (obj->type == OBJ_REF_DELTA || obj->type == OBJ_OFS_DELTA) {
+ if (is_delta_type(obj->type)) {
void *base = get_base_data(c->base);
void *raw = get_data_from_pack(obj);
c->data = patch_delta(
void *base_data, *delta_data;
delta_obj->real_type = base->obj->real_type;
+ delta_obj->delta_depth = base->obj->delta_depth + 1;
+ if (deepest_delta < delta_obj->delta_depth)
+ deepest_delta = delta_obj->delta_depth;
+ delta_obj->base_object_no = base->obj - objects;
delta_data = get_data_from_pack(delta_obj);
base_data = get_base_data(base);
result->obj = delta_obj;
union delta_base base_spec;
hashcpy(base_spec.sha1, base->obj->idx.sha1);
- find_delta_children(&base_spec, &ref_first, &ref_last);
+ find_delta_children(&base_spec,
+ &ref_first, &ref_last, OBJ_REF_DELTA);
memset(&base_spec, 0, sizeof(base_spec));
base_spec.offset = base->obj->idx.offset;
- find_delta_children(&base_spec, &ofs_first, &ofs_last);
+ find_delta_children(&base_spec,
+ &ofs_first, &ofs_last, OBJ_OFS_DELTA);
}
if (ref_last == -1 && ofs_last == -1) {
for (i = ref_first; i <= ref_last; i++) {
struct object_entry *child = objects + deltas[i].obj_no;
- if (child->real_type == OBJ_REF_DELTA) {
- struct base_data result;
- resolve_delta(child, base, &result);
- if (i == ref_last && ofs_last == -1)
- free_base_data(base);
- find_unresolved_deltas(&result, base);
- }
+ struct base_data result;
+
+ assert(child->real_type == OBJ_REF_DELTA);
+ resolve_delta(child, base, &result);
+ if (i == ref_last && ofs_last == -1)
+ free_base_data(base);
+ find_unresolved_deltas(&result, base);
}
for (i = ofs_first; i <= ofs_last; i++) {
struct object_entry *child = objects + deltas[i].obj_no;
- if (child->real_type == OBJ_OFS_DELTA) {
- struct base_data result;
- resolve_delta(child, base, &result);
- if (i == ofs_last)
- free_base_data(base);
- find_unresolved_deltas(&result, base);
- }
+ struct base_data result;
+
+ assert(child->real_type == OBJ_OFS_DELTA);
+ resolve_delta(child, base, &result);
+ if (i == ofs_last)
+ free_base_data(base);
+ find_unresolved_deltas(&result, base);
}
unlink_base_data(base);
{
const struct delta_entry *delta_a = a;
const struct delta_entry *delta_b = b;
- return memcmp(&delta_a->base, &delta_b->base, UNION_BASE_SZ);
+
+ /* group by type (ref vs ofs) and then by value (sha-1 or offset) */
+ return compare_delta_bases(&delta_a->base, &delta_b->base,
+ objects[delta_a->obj_no].type,
+ objects[delta_b->obj_no].type);
}
/* Parse all objects and return the pack content SHA1 hash */
struct object_entry *obj = &objects[i];
void *data = unpack_raw_entry(obj, &delta->base);
obj->real_type = obj->type;
- if (obj->type == OBJ_REF_DELTA || obj->type == OBJ_OFS_DELTA) {
+ if (is_delta_type(obj->type)) {
nr_deltas++;
delta->obj_no = i;
delta++;
struct object_entry *obj = &objects[i];
struct base_data base_obj;
- if (obj->type == OBJ_REF_DELTA || obj->type == OBJ_OFS_DELTA)
+ if (is_delta_type(obj->type))
continue;
base_obj.obj = obj;
base_obj.data = NULL;
static int git_index_pack_config(const char *k, const char *v, void *cb)
{
+ struct pack_idx_option *opts = cb;
+
if (!strcmp(k, "pack.indexversion")) {
- pack_idx_default_version = git_config_int(k, v);
- if (pack_idx_default_version > 2)
- die("bad pack.indexversion=%"PRIu32,
- pack_idx_default_version);
+ opts->version = git_config_int(k, v);
+ if (opts->version > 2)
+ die("bad pack.indexversion=%"PRIu32, opts->version);
return 0;
}
return git_default_config(k, v, cb);
}
+static int cmp_uint32(const void *a_, const void *b_)
+{
+ uint32_t a = *((uint32_t *)a_);
+ uint32_t b = *((uint32_t *)b_);
+
+ return (a < b) ? -1 : (a != b);
+}
+
+static void read_v2_anomalous_offsets(struct packed_git *p,
+ struct pack_idx_option *opts)
+{
+ const uint32_t *idx1, *idx2;
+ uint32_t i;
+
+ /* The address of the 4-byte offset table */
+ idx1 = (((const uint32_t *)p->index_data)
+ + 2 /* 8-byte header */
+ + 256 /* fan out */
+ + 5 * p->num_objects /* 20-byte SHA-1 table */
+ + p->num_objects /* CRC32 table */
+ );
+
+ /* The address of the 8-byte offset table */
+ idx2 = idx1 + p->num_objects;
+
+ for (i = 0; i < p->num_objects; i++) {
+ uint32_t off = ntohl(idx1[i]);
+ if (!(off & 0x80000000))
+ continue;
+ off = off & 0x7fffffff;
+ if (idx2[off * 2])
+ continue;
+ /*
+ * The real offset is ntohl(idx2[off * 2]) in high 4
+ * octets, and ntohl(idx2[off * 2 + 1]) in low 4
+ * octets. But idx2[off * 2] is Zero!!!
+ */
+ ALLOC_GROW(opts->anomaly, opts->anomaly_nr + 1, opts->anomaly_alloc);
+ 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);
+}
+
+static void read_idx_option(struct pack_idx_option *opts, const char *pack_name)
+{
+ struct packed_git *p = add_packed_git(pack_name, strlen(pack_name), 1);
+
+ if (!p)
+ die("Cannot open existing pack file '%s'", pack_name);
+ if (open_pack_index(p))
+ die("Cannot open existing pack idx file for '%s'", pack_name);
+
+ /* Read the attributes from the existing idx file */
+ opts->version = p->index_version;
+
+ if (opts->version == 2)
+ read_v2_anomalous_offsets(p, opts);
+
+ /*
+ * Get rid of the idx file as we do not need it anymore.
+ * NEEDSWORK: extract this bit from free_pack_by_name() in
+ * sha1_file.c, perhaps? It shouldn't matter very much as we
+ * know we haven't installed this pack (hence we never have
+ * read anything from it).
+ */
+ close_pack_index(p);
+ free(p);
+}
+
+static void show_pack_info(int stat_only)
+{
+ int i, baseobjects = nr_objects - nr_deltas;
+ unsigned long *chain_histogram = NULL;
+
+ if (deepest_delta)
+ chain_histogram = xcalloc(deepest_delta, sizeof(unsigned long));
+
+ for (i = 0; i < nr_objects; i++) {
+ struct object_entry *obj = &objects[i];
+
+ if (is_delta_type(obj->type))
+ chain_histogram[obj->delta_depth - 1]++;
+ if (stat_only)
+ continue;
+ printf("%s %-6s %lu %lu %"PRIuMAX,
+ sha1_to_hex(obj->idx.sha1),
+ 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->base_object_no];
+ printf(" %u %s", obj->delta_depth, sha1_to_hex(bobj->idx.sha1));
+ }
+ putchar('\n');
+ }
+
+ if (baseobjects)
+ printf("non delta: %d object%s\n",
+ baseobjects, baseobjects > 1 ? "s" : "");
+ for (i = 0; i < deepest_delta; i++) {
+ if (!chain_histogram[i])
+ continue;
+ printf("chain length = %d: %lu object%s\n",
+ i + 1,
+ chain_histogram[i],
+ chain_histogram[i] > 1 ? "s" : "");
+ }
+}
+
int cmd_index_pack(int argc, const char **argv, const char *prefix)
{
- int i, fix_thin_pack = 0;
+ int i, fix_thin_pack = 0, verify = 0, stat_only = 0, stat = 0;
const char *curr_pack, *curr_index;
const char *index_name = NULL, *pack_name = NULL;
const char *keep_name = NULL, *keep_msg = NULL;
char *index_name_buf = NULL, *keep_name_buf = NULL;
struct pack_idx_entry **idx_objects;
+ struct pack_idx_option opts;
unsigned char pack_sha1[20];
if (argc == 2 && !strcmp(argv[1], "-h"))
read_replace_refs = 0;
- git_config(git_index_pack_config, NULL);
+ reset_pack_idx_option(&opts);
+ git_config(git_index_pack_config, &opts);
if (prefix && chdir(prefix))
die("Cannot come back to cwd");
fix_thin_pack = 1;
} else if (!strcmp(arg, "--strict")) {
strict = 1;
+ } else if (!strcmp(arg, "--verify")) {
+ verify = 1;
+ } else if (!strcmp(arg, "--verify-stat")) {
+ verify = 1;
+ stat = 1;
+ } else if (!strcmp(arg, "--verify-stat-only")) {
+ verify = 1;
+ stat = 1;
+ stat_only = 1;
} else if (!strcmp(arg, "--keep")) {
keep_msg = "";
} else if (!prefixcmp(arg, "--keep=")) {
index_name = argv[++i];
} else if (!prefixcmp(arg, "--index-version=")) {
char *c;
- pack_idx_default_version = strtoul(arg + 16, &c, 10);
- if (pack_idx_default_version > 2)
+ opts.version = strtoul(arg + 16, &c, 10);
+ if (opts.version > 2)
die("bad %s", arg);
if (*c == ',')
- pack_idx_off32_limit = strtoul(c+1, &c, 0);
- if (*c || pack_idx_off32_limit & 0x80000000)
+ opts.off32_limit = strtoul(c+1, &c, 0);
+ if (*c || opts.off32_limit & 0x80000000)
die("bad %s", arg);
} else
usage(index_pack_usage);
strcpy(keep_name_buf + len - 5, ".keep");
keep_name = keep_name_buf;
}
+ if (verify) {
+ if (!index_name)
+ die("--verify with no packfile name given");
+ read_idx_option(&opts, index_name);
+ opts.flags |= WRITE_IDX_VERIFY;
+ }
curr_pack = open_pack_file(pack_name);
parse_pack_header();
- objects = xmalloc((nr_objects + 1) * sizeof(struct object_entry));
- deltas = xmalloc(nr_objects * sizeof(struct delta_entry));
+ objects = xcalloc(nr_objects + 1, sizeof(struct object_entry));
+ deltas = xcalloc(nr_objects, sizeof(struct delta_entry));
parse_pack_objects(pack_sha1);
if (nr_deltas == nr_resolved_deltas) {
stop_progress(&progress);
if (strict)
check_objects();
+ if (stat)
+ show_pack_info(stat_only);
+
idx_objects = xmalloc((nr_objects) * sizeof(struct pack_idx_entry *));
for (i = 0; i < nr_objects; i++)
idx_objects[i] = &objects[i].idx;
- curr_index = write_idx_file(index_name, idx_objects, nr_objects, pack_sha1);
+ curr_index = write_idx_file(index_name, idx_objects, nr_objects, &opts, pack_sha1);
free(idx_objects);
- final(pack_name, curr_pack,
- index_name, curr_index,
- keep_name, keep_msg,
- pack_sha1);
+ if (!verify)
+ final(pack_name, curr_pack,
+ index_name, curr_index,
+ keep_name, keep_msg,
+ pack_sha1);
+ else
+ close(input_fd);
free(objects);
free(index_name_buf);
free(keep_name_buf);
static int incremental;
static int ignore_packed_keep;
static int allow_ofs_delta;
+static struct pack_idx_option pack_idx_opts;
static const char *base_name;
static int progress = 1;
static int window = 10;
const char *idx_tmp_name;
char tmpname[PATH_MAX];
- idx_tmp_name = write_idx_file(NULL, written_list,
- nr_written, sha1);
+ idx_tmp_name = write_idx_file(NULL, written_list, nr_written,
+ &pack_idx_opts, sha1);
snprintf(tmpname, sizeof(tmpname), "%s-%s.pack",
base_name, sha1_to_hex(sha1));
return 0;
}
if (!strcmp(k, "pack.indexversion")) {
- pack_idx_default_version = git_config_int(k, v);
- if (pack_idx_default_version > 2)
+ pack_idx_opts.version = git_config_int(k, v);
+ if (pack_idx_opts.version > 2)
die("bad pack.indexversion=%"PRIu32,
- pack_idx_default_version);
+ pack_idx_opts.version);
return 0;
}
if (!strcmp(k, "pack.packsizelimit")) {
rp_av[1] = "--objects"; /* --thin will make it --objects-edge */
rp_ac = 2;
+ reset_pack_idx_option(&pack_idx_opts);
git_config(git_pack_config, NULL);
if (!pack_compression_seen && core_compression_seen)
pack_compression_level = core_compression_level;
}
if (!prefixcmp(arg, "--index-version=")) {
char *c;
- pack_idx_default_version = strtoul(arg + 16, &c, 10);
- if (pack_idx_default_version > 2)
+ pack_idx_opts.version = strtoul(arg + 16, &c, 10);
+ if (pack_idx_opts.version > 2)
die("bad %s", arg);
if (*c == ',')
- pack_idx_off32_limit = strtoul(c+1, &c, 0);
- if (*c || pack_idx_off32_limit & 0x80000000)
+ pack_idx_opts.off32_limit = strtoul(c+1, &c, 0);
+ if (*c || pack_idx_opts.off32_limit & 0x80000000)
die("bad %s", arg);
continue;
}
#include "builtin.h"
#include "cache.h"
-#include "pack.h"
-#include "pack-revindex.h"
+#include "run-command.h"
#include "parse-options.h"
-#define MAX_CHAIN 50
-
#define VERIFY_PACK_VERBOSE 01
#define VERIFY_PACK_STAT_ONLY 02
-static void show_pack_info(struct packed_git *p, unsigned int flags)
-{
- uint32_t nr_objects, i;
- int cnt;
- int stat_only = flags & VERIFY_PACK_STAT_ONLY;
- unsigned long chain_histogram[MAX_CHAIN+1], baseobjects;
-
- nr_objects = p->num_objects;
- memset(chain_histogram, 0, sizeof(chain_histogram));
- baseobjects = 0;
-
- for (i = 0; i < nr_objects; i++) {
- const unsigned char *sha1;
- unsigned char base_sha1[20];
- const char *type;
- unsigned long size;
- unsigned long store_size;
- off_t offset;
- unsigned int delta_chain_length;
-
- sha1 = nth_packed_object_sha1(p, i);
- if (!sha1)
- die("internal error pack-check nth-packed-object");
- offset = nth_packed_object_offset(p, i);
- type = typename(packed_object_info_detail(p, offset, &size, &store_size,
- &delta_chain_length,
- base_sha1));
- if (!stat_only)
- printf("%s ", sha1_to_hex(sha1));
- if (!delta_chain_length) {
- if (!stat_only)
- printf("%-6s %lu %lu %"PRIuMAX"\n",
- type, size, store_size, (uintmax_t)offset);
- baseobjects++;
- }
- else {
- if (!stat_only)
- printf("%-6s %lu %lu %"PRIuMAX" %u %s\n",
- type, size, store_size, (uintmax_t)offset,
- delta_chain_length, sha1_to_hex(base_sha1));
- if (delta_chain_length <= MAX_CHAIN)
- chain_histogram[delta_chain_length]++;
- else
- chain_histogram[0]++;
- }
- }
-
- if (baseobjects)
- printf("non delta: %lu object%s\n",
- baseobjects, baseobjects > 1 ? "s" : "");
-
- for (cnt = 1; cnt <= MAX_CHAIN; cnt++) {
- if (!chain_histogram[cnt])
- continue;
- printf("chain length = %d: %lu object%s\n", cnt,
- chain_histogram[cnt],
- chain_histogram[cnt] > 1 ? "s" : "");
- }
- if (chain_histogram[0])
- printf("chain length > %d: %lu object%s\n", MAX_CHAIN,
- chain_histogram[0],
- chain_histogram[0] > 1 ? "s" : "");
-}
-
static int verify_one_pack(const char *path, unsigned int flags)
{
- char arg[PATH_MAX];
- int len;
+ struct child_process index_pack;
+ const char *argv[] = {"index-pack", NULL, NULL, NULL };
+ struct strbuf arg = STRBUF_INIT;
int verbose = flags & VERIFY_PACK_VERBOSE;
int stat_only = flags & VERIFY_PACK_STAT_ONLY;
- struct packed_git *pack;
int err;
- len = strlcpy(arg, path, PATH_MAX);
- if (len >= PATH_MAX)
- return error("name too long: %s", path);
-
- /*
- * In addition to "foo.idx" we accept "foo.pack" and "foo";
- * normalize these forms to "foo.idx" for add_packed_git().
- */
- if (has_extension(arg, ".pack")) {
- strcpy(arg + len - 5, ".idx");
- len--;
- } else if (!has_extension(arg, ".idx")) {
- if (len + 4 >= PATH_MAX)
- return error("name too long: %s.idx", arg);
- strcpy(arg + len, ".idx");
- len += 4;
- }
+ if (stat_only)
+ argv[1] = "--verify-stat-only";
+ else if (verbose)
+ argv[1] = "--verify-stat";
+ else
+ argv[1] = "--verify";
/*
- * add_packed_git() uses our buffer (containing "foo.idx") to
- * build the pack filename ("foo.pack"). Make sure it fits.
+ * In addition to "foo.pack" we accept "foo.idx" and "foo";
+ * normalize these forms to "foo.pack" for "index-pack --verify".
*/
- if (len + 1 >= PATH_MAX) {
- arg[len - 4] = '\0';
- return error("name too long: %s.pack", arg);
- }
-
- pack = add_packed_git(arg, len, 1);
- if (!pack)
- return error("packfile %s not found.", arg);
+ strbuf_addstr(&arg, path);
+ if (has_extension(arg.buf, ".idx"))
+ strbuf_splice(&arg, arg.len - 3, 3, "pack", 4);
+ else if (!has_extension(arg.buf, ".pack"))
+ strbuf_add(&arg, ".pack", 5);
+ argv[2] = arg.buf;
- install_packed_git(pack);
+ memset(&index_pack, 0, sizeof(index_pack));
+ index_pack.argv = argv;
+ index_pack.git_cmd = 1;
- if (!stat_only)
- err = verify_pack(pack);
- else
- err = open_pack_index(pack);
+ err = run_command(&index_pack);
if (verbose || stat_only) {
if (err)
- printf("%s: bad\n", pack->pack_name);
+ printf("%s: bad\n", arg.buf);
else {
- show_pack_info(pack, flags);
if (!stat_only)
- printf("%s: ok\n", pack->pack_name);
+ printf("%s: ok\n", arg.buf);
}
}
+ strbuf_release(&arg);
return err;
}
for (i = 0; i < argc; i++) {
if (verify_one_pack(argv[i], flags))
err = 1;
- discard_revindex();
}
return err;
extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
-extern int packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
struct object_info {
#include "progress.h"
#include "csum-file.h"
-static void flush(struct sha1file *f, void * buf, unsigned int count)
+static void flush(struct sha1file *f, void *buf, unsigned int count)
{
+ if (0 <= f->check_fd && count) {
+ unsigned char check_buffer[8192];
+ ssize_t ret = read_in_full(f->check_fd, check_buffer, count);
+
+ if (ret < 0)
+ die_errno("%s: sha1 file read error", f->name);
+ if (ret < count)
+ die("%s: sha1 file truncated", f->name);
+ if (memcmp(buf, check_buffer, count))
+ die("sha1 file '%s' validation error", f->name);
+ }
+
for (;;) {
int ret = xwrite(f->fd, buf, count);
if (ret > 0) {
fd = 0;
} else
fd = f->fd;
+ if (0 <= f->check_fd) {
+ char discard;
+ int cnt = read_in_full(f->check_fd, &discard, 1);
+ if (cnt < 0)
+ die_errno("%s: error when reading the tail of sha1 file",
+ f->name);
+ if (cnt)
+ die("%s: sha1 file has trailing garbage", f->name);
+ if (close(f->check_fd))
+ die_errno("%s: sha1 file error on close", f->name);
+ }
free(f);
return fd;
}
return sha1fd_throughput(fd, name, NULL);
}
+struct sha1file *sha1fd_check(const char *name)
+{
+ int sink, check;
+ struct sha1file *f;
+
+ sink = open("/dev/null", O_WRONLY);
+ if (sink < 0)
+ return NULL;
+ check = open(name, O_RDONLY);
+ if (check < 0) {
+ int saved_errno = errno;
+ close(sink);
+ errno = saved_errno;
+ return NULL;
+ }
+ f = sha1fd(sink, name);
+ f->check_fd = check;
+ return f;
+}
+
struct sha1file *sha1fd_throughput(int fd, const char *name, struct progress *tp)
{
struct sha1file *f = xmalloc(sizeof(*f));
f->fd = fd;
+ f->check_fd = -1;
f->offset = 0;
f->total = 0;
f->tp = tp;
/* A SHA1-protected file */
struct sha1file {
int fd;
+ int check_fd;
unsigned int offset;
git_SHA_CTX ctx;
off_t total;
#define CSUM_FSYNC 2
extern struct sha1file *sha1fd(int fd, const char *name);
+extern struct sha1file *sha1fd_check(const char *name);
extern struct sha1file *sha1fd_throughput(int fd, const char *name, struct progress *tp);
extern int sha1close(struct sha1file *, unsigned char *, unsigned int);
extern int sha1write(struct sha1file *, void *, unsigned int);
static struct atom_str **atom_table;
/* The .pack file being generated */
+static struct pack_idx_option pack_idx_opts;
static unsigned int pack_id;
static struct sha1file *pack_file;
static struct packed_git *pack_data;
if (c != last)
die("internal consistency error creating the index");
- tmpfile = write_idx_file(NULL, idx, object_count, pack_data->sha1);
+ tmpfile = write_idx_file(NULL, idx, object_count, &pack_idx_opts, pack_data->sha1);
free(idx);
return tmpfile;
}
return 0;
}
if (!strcmp(k, "pack.indexversion")) {
- pack_idx_default_version = git_config_int(k, v);
- if (pack_idx_default_version > 2)
+ pack_idx_opts.version = git_config_int(k, v);
+ if (pack_idx_opts.version > 2)
die("bad pack.indexversion=%"PRIu32,
- pack_idx_default_version);
+ pack_idx_opts.version);
return 0;
}
if (!strcmp(k, "pack.packsizelimit")) {
usage(fast_import_usage);
setup_git_directory();
+ reset_pack_idx_option(&pack_idx_opts);
git_config(git_pack_config, NULL);
if (!pack_compression_seen && core_compression_seen)
pack_compression_level = core_compression_level;
#include "pack.h"
#include "csum-file.h"
-uint32_t pack_idx_default_version = 2;
-uint32_t pack_idx_off32_limit = 0x7fffffff;
+void reset_pack_idx_option(struct pack_idx_option *opts)
+{
+ memset(opts, 0, sizeof(*opts));
+ opts->version = 2;
+ opts->off32_limit = 0x7fffffff;
+}
static int sha1_compare(const void *_a, const void *_b)
{
return hashcmp(a->sha1, b->sha1);
}
+static int cmp_uint32(const void *a_, const void *b_)
+{
+ uint32_t a = *((uint32_t *)a_);
+ uint32_t b = *((uint32_t *)b_);
+
+ return (a < b) ? -1 : (a != b);
+}
+
+static int need_large_offset(off_t offset, const struct pack_idx_option *opts)
+{
+ uint32_t ofsval;
+
+ if ((offset >> 31) || (opts->off32_limit < offset))
+ return 1;
+ if (!opts->anomaly_nr)
+ return 0;
+ ofsval = offset;
+ return !!bsearch(&ofsval, opts->anomaly, opts->anomaly_nr,
+ sizeof(ofsval), cmp_uint32);
+}
+
/*
* On entry *sha1 contains the pack content SHA1 hash, on exit it is
* the SHA1 hash of sorted object names. The objects array passed in
* will be sorted by SHA1 on exit.
*/
const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects,
- int nr_objects, unsigned char *sha1)
+ int nr_objects, const struct pack_idx_option *opts,
+ unsigned char *sha1)
{
struct sha1file *f;
struct pack_idx_entry **sorted_by_sha, **list, **last;
else
sorted_by_sha = list = last = NULL;
- if (!index_name) {
- static char tmpfile[PATH_MAX];
- fd = odb_mkstemp(tmpfile, sizeof(tmpfile), "pack/tmp_idx_XXXXXX");
- index_name = xstrdup(tmpfile);
+ if (opts->flags & WRITE_IDX_VERIFY) {
+ assert(index_name);
+ f = sha1fd_check(index_name);
} else {
- unlink(index_name);
- fd = open(index_name, O_CREAT|O_EXCL|O_WRONLY, 0600);
+ if (!index_name) {
+ static char tmpfile[PATH_MAX];
+ 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_errno("unable to create '%s'", index_name);
+ f = sha1fd(fd, index_name);
}
- if (fd < 0)
- 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 */
- index_version = (last_obj_offset >> 31) ? 2 : pack_idx_default_version;
+ index_version = need_large_offset(last_obj_offset, opts) ? 2 : opts->version;
/* index versions 2 and above need a header */
if (index_version >= 2) {
list = sorted_by_sha;
for (i = 0; i < nr_objects; i++) {
struct pack_idx_entry *obj = *list++;
- uint32_t offset = (obj->offset <= pack_idx_off32_limit) ?
- obj->offset : (0x80000000 | nr_large_offset++);
+ uint32_t offset;
+
+ offset = (need_large_offset(obj->offset, opts)
+ ? (0x80000000 | nr_large_offset++)
+ : obj->offset);
offset = htonl(offset);
sha1write(f, &offset, 4);
}
while (nr_large_offset) {
struct pack_idx_entry *obj = *list++;
uint64_t offset = obj->offset;
- if (offset > pack_idx_off32_limit) {
- uint32_t split[2];
- split[0] = htonl(offset >> 32);
- split[1] = htonl(offset & 0xffffffff);
- sha1write(f, split, 8);
- nr_large_offset--;
- }
+ uint32_t split[2];
+
+ if (!need_large_offset(offset, opts))
+ continue;
+ split[0] = htonl(offset >> 32);
+ split[1] = htonl(offset & 0xffffffff);
+ sha1write(f, split, 8);
+ nr_large_offset--;
}
}
sha1write(f, sha1, 20);
- sha1close(f, NULL, CSUM_FSYNC);
+ sha1close(f, NULL, ((opts->flags & WRITE_IDX_VERIFY)
+ ? CSUM_CLOSE : CSUM_FSYNC));
git_SHA1_Final(sha1, &ctx);
return index_name;
}
*/
#define PACK_IDX_SIGNATURE 0xff744f63 /* "\377tOc" */
-/* These may be overridden by command-line parameters */
-extern uint32_t pack_idx_default_version;
-extern uint32_t pack_idx_off32_limit;
+struct pack_idx_option {
+ unsigned flags;
+ /* flag bits */
+#define WRITE_IDX_VERIFY 01
+
+ uint32_t version;
+ uint32_t off32_limit;
+
+ /*
+ * List of offsets that would fit within off32_limit but
+ * need to be written out as 64-bit entity for byte-for-byte
+ * verification.
+ */
+ int anomaly_alloc, anomaly_nr;
+ uint32_t *anomaly;
+};
+
+extern void reset_pack_idx_option(struct pack_idx_option *);
/*
* Packed object index header
off_t offset;
};
-extern const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects, int nr_objects, unsigned char *sha1);
+extern const char *write_idx_file(const char *index_name, struct pack_idx_entry **objects, int nr_objects, const struct pack_idx_option *, unsigned char *sha1);
extern int check_pack_crc(struct packed_git *p, struct pack_window **w_curs, off_t offset, off_t len, unsigned int nr);
extern int verify_pack_index(struct packed_git *);
extern int verify_pack(struct packed_git *);
return type;
}
-int packed_object_info_detail(struct packed_git *p,
- off_t obj_offset,
- unsigned long *size,
- unsigned long *store_size,
- unsigned int *delta_chain_length,
- unsigned char *base_sha1)
-{
- struct pack_window *w_curs = NULL;
- off_t curpos;
- unsigned long dummy;
- unsigned char *next_sha1;
- enum object_type type;
- struct revindex_entry *revidx;
-
- *delta_chain_length = 0;
- curpos = obj_offset;
- type = unpack_object_header(p, &w_curs, &curpos, size);
-
- revidx = find_pack_revindex(p, obj_offset);
- *store_size = revidx[1].offset - obj_offset;
-
- for (;;) {
- switch (type) {
- default:
- die("pack %s contains unknown object type %d",
- p->pack_name, type);
- case OBJ_COMMIT:
- case OBJ_TREE:
- case OBJ_BLOB:
- case OBJ_TAG:
- unuse_pack(&w_curs);
- return type;
- case OBJ_OFS_DELTA:
- obj_offset = get_delta_base(p, &w_curs, &curpos, type, obj_offset);
- if (!obj_offset)
- die("pack %s contains bad delta base reference of type %s",
- p->pack_name, typename(type));
- if (*delta_chain_length == 0) {
- revidx = find_pack_revindex(p, obj_offset);
- hashcpy(base_sha1, nth_packed_object_sha1(p, revidx->nr));
- }
- break;
- case OBJ_REF_DELTA:
- next_sha1 = use_pack(p, &w_curs, curpos, NULL);
- if (*delta_chain_length == 0)
- hashcpy(base_sha1, next_sha1);
- obj_offset = find_pack_entry_one(next_sha1, p);
- break;
- }
- (*delta_chain_length)++;
- curpos = obj_offset;
- type = unpack_object_header(p, &w_curs, &curpos, &dummy);
- }
-}
-
static int packed_object_info(struct packed_git *p, off_t obj_offset,
unsigned long *sizep, int *rtype)
{
'cmp "test-1-${pack1}.idx" "1.idx" &&
cmp "test-2-${pack2}.idx" "2.idx"'
+test_expect_success 'index-pack --verify on index version 1' '
+ git index-pack --verify "test-1-${pack1}.pack"
+'
+
+test_expect_success 'index-pack --verify on index version 2' '
+ git index-pack --verify "test-2-${pack2}.pack"
+'
+
test_expect_success \
'index v2: force some 64-bit offsets with pack-objects' \
'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list)'
'64-bit offsets: index-pack result should match pack-objects one' \
'cmp "test-3-${pack3}.idx" "3.idx"'
+test_expect_success OFF64_T 'index-pack --verify on 64-bit offset v2 (cheat)' '
+ # This cheats by knowing which lower offset should still be encoded
+ # in 64-bit representation.
+ git index-pack --verify --index-version=2,0x40000 "test-3-${pack3}.pack"
+'
+
+test_expect_success OFF64_T 'index-pack --verify on 64-bit offset v2' '
+ git index-pack --verify "test-3-${pack3}.pack"
+'
+
# returns the object number for given object in given pack index
index_obj_nr()
{
( while read obj
do git cat-file -p $obj >/dev/null || exit 1
done <obj-list ) &&
- err=$(test_must_fail git verify-pack \
- ".git/objects/pack/pack-${pack1}.pack" 2>&1) &&
- echo "$err" | grep "CRC mismatch"'
+ test_must_fail git verify-pack ".git/objects/pack/pack-${pack1}.pack"
+'
test_expect_success 'running index-pack in the object store' '
rm -f .git/objects/pack/* &&