summaryrefslogtreecommitdiff
path: root/builtin/fsck.c
diff options
context:
space:
mode:
Diffstat (limited to 'builtin/fsck.c')
-rw-r--r--builtin/fsck.c299
1 files changed, 176 insertions, 123 deletions
diff --git a/builtin/fsck.c b/builtin/fsck.c
index 2de272ea36..92ce775a74 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -1,5 +1,6 @@
#include "builtin.h"
#include "cache.h"
+#include "config.h"
#include "commit.h"
#include "tree.h"
#include "blob.h"
@@ -14,10 +15,13 @@
#include "progress.h"
#include "streaming.h"
#include "decorate.h"
+#include "packfile.h"
#define REACHABLE 0x0001
#define SEEN 0x0002
#define HAS_OBJ 0x0004
+/* This flag is set if something points to this object. */
+#define USED 0x0008
static int show_root;
static int show_tags;
@@ -56,6 +60,23 @@ static const char *describe_object(struct object *obj)
return buf.buf;
}
+static const char *printable_type(struct object *obj)
+{
+ const char *ret;
+
+ if (obj->type == OBJ_NONE) {
+ enum object_type type = sha1_object_info(obj->oid.hash, NULL);
+ if (type > 0)
+ object_as_type(obj, type, 0);
+ }
+
+ ret = typename(obj->type);
+ if (!ret)
+ ret = "unknown";
+
+ return ret;
+}
+
static int fsck_config(const char *var, const char *value, void *cb)
{
if (strcmp(var, "fsck.skiplist") == 0) {
@@ -83,7 +104,7 @@ static void objreport(struct object *obj, const char *msg_type,
const char *err)
{
fprintf(stderr, "%s in %s %s: %s\n",
- msg_type, typename(obj->type), describe_object(obj), err);
+ msg_type, printable_type(obj), describe_object(obj), err);
}
static int objerror(struct object *obj, const char *err)
@@ -114,7 +135,7 @@ static int mark_object(struct object *obj, int type, void *data, struct fsck_opt
if (!obj) {
/* ... these references to parent->fld are safe here */
printf("broken link from %7s %s\n",
- typename(parent->type), describe_object(parent));
+ printable_type(parent), describe_object(parent));
printf("broken link from %7s %s\n",
(type == OBJ_ANY ? "unknown" : typename(type)), "unknown");
errors_found |= ERROR_REACHABLE;
@@ -131,9 +152,9 @@ static int mark_object(struct object *obj, int type, void *data, struct fsck_opt
if (!(obj->flags & HAS_OBJ)) {
if (parent && !has_object_file(&obj->oid)) {
printf("broken link from %7s %s\n",
- typename(parent->type), describe_object(parent));
+ printable_type(parent), describe_object(parent));
printf(" to %7s %s\n",
- typename(obj->type), describe_object(obj));
+ printable_type(obj), describe_object(obj));
errors_found |= ERROR_REACHABLE;
}
return 1;
@@ -150,17 +171,12 @@ static void mark_object_reachable(struct object *obj)
static int traverse_one_object(struct object *obj)
{
- int result;
- struct tree *tree = NULL;
+ int result = fsck_walk(obj, obj, &fsck_walk_options);
if (obj->type == OBJ_TREE) {
- tree = (struct tree *)obj;
- if (parse_tree(tree) < 0)
- return 1; /* error already displayed */
- }
- result = fsck_walk(obj, obj, &fsck_walk_options);
- if (tree)
+ struct tree *tree = (struct tree *)obj;
free_tree_buffer(tree);
+ }
return result;
}
@@ -170,14 +186,9 @@ static int traverse_reachable(void)
unsigned int nr = 0;
int result = 0;
if (show_progress)
- progress = start_progress_delay(_("Checking connectivity"), 0, 0, 2);
+ progress = start_delayed_progress(_("Checking connectivity"), 0);
while (pending.nr) {
- struct object_array_entry *entry;
- struct object *obj;
-
- entry = pending.objects + --pending.nr;
- obj = entry->item;
- result |= traverse_one_object(obj);
+ result |= traverse_one_object(object_array_pop(&pending));
display_progress(progress, ++nr);
}
stop_progress(&progress);
@@ -188,7 +199,7 @@ static int mark_used(struct object *obj, int type, void *data, struct fsck_optio
{
if (!obj)
return 1;
- obj->used = 1;
+ obj->flags |= USED;
return 0;
}
@@ -205,9 +216,7 @@ static void check_reachable_object(struct object *obj)
if (!(obj->flags & HAS_OBJ)) {
if (has_sha1_pack(obj->oid.hash))
return; /* it is in pack - forget about it */
- if (connectivity_only && has_object_file(&obj->oid))
- return;
- printf("missing %s %s\n", typename(obj->type),
+ printf("missing %s %s\n", printable_type(obj),
describe_object(obj));
errors_found |= ERROR_REACHABLE;
return;
@@ -225,7 +234,7 @@ static void check_unreachable_object(struct object *obj)
* to complain about it being unreachable (since it does
* not exist).
*/
- if (!obj->parsed)
+ if (!(obj->flags & HAS_OBJ))
return;
/*
@@ -233,13 +242,13 @@ static void check_unreachable_object(struct object *obj)
* since this is something that is prunable.
*/
if (show_unreachable) {
- printf("unreachable %s %s\n", typename(obj->type),
+ printf("unreachable %s %s\n", printable_type(obj),
describe_object(obj));
return;
}
/*
- * "!used" means that nothing at all points to it, including
+ * "!USED" means that nothing at all points to it, including
* other unreachable objects. In other words, it's the "tip"
* of some set of unreachable objects, usually a commit that
* got dropped.
@@ -250,9 +259,9 @@ static void check_unreachable_object(struct object *obj)
* deleted a branch by mistake, this is a prime candidate to
* start looking at, for example.
*/
- if (!obj->used) {
+ if (!(obj->flags & USED)) {
if (show_dangling)
- printf("dangling %s %s\n", typename(obj->type),
+ printf("dangling %s %s\n", printable_type(obj),
describe_object(obj));
if (write_lost_and_found) {
char *filename = git_pathdup("lost-found/%s/%s",
@@ -265,10 +274,9 @@ static void check_unreachable_object(struct object *obj)
free(filename);
return;
}
- if (!(f = fopen(filename, "w")))
- die_errno("Could not open '%s'", filename);
+ f = xfopen(filename, "w");
if (obj->type == OBJ_BLOB) {
- if (stream_blob_to_fd(fileno(f), obj->oid.hash, NULL, 1))
+ if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1))
die_errno("Could not write '%s'", filename);
} else
fprintf(f, "%s\n", describe_object(obj));
@@ -320,30 +328,25 @@ static void check_connectivity(void)
static int fsck_obj(struct object *obj)
{
+ int err;
+
if (obj->flags & SEEN)
return 0;
obj->flags |= SEEN;
if (verbose)
fprintf(stderr, "Checking %s %s\n",
- typename(obj->type), describe_object(obj));
+ printable_type(obj), describe_object(obj));
if (fsck_walk(obj, NULL, &fsck_obj_options))
objerror(obj, "broken links");
- if (fsck_object(obj, NULL, 0, &fsck_obj_options))
- return -1;
-
- if (obj->type == OBJ_TREE) {
- struct tree *item = (struct tree *) obj;
-
- free_tree_buffer(item);
- }
+ err = fsck_object(obj, NULL, 0, &fsck_obj_options);
+ if (err)
+ goto out;
if (obj->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *) obj;
- free_commit_buffer(commit);
-
if (!commit->parents && show_root)
printf("root %s\n", describe_object(&commit->object));
}
@@ -352,29 +355,22 @@ static int fsck_obj(struct object *obj)
struct tag *tag = (struct tag *) obj;
if (show_tags && tag->tagged) {
- printf("tagged %s %s", typename(tag->tagged->type),
+ printf("tagged %s %s", printable_type(tag->tagged),
describe_object(tag->tagged));
printf(" (%s) in %s\n", tag->tag,
describe_object(&tag->object));
}
}
- return 0;
-}
-
-static int fsck_sha1(const unsigned char *sha1)
-{
- struct object *obj = parse_object(sha1);
- if (!obj) {
- errors_found |= ERROR_OBJECT;
- return error("%s: object corrupt or missing",
- sha1_to_hex(sha1));
- }
- obj->flags |= HAS_OBJ;
- return fsck_obj(obj);
+out:
+ if (obj->type == OBJ_TREE)
+ free_tree_buffer((struct tree *)obj);
+ if (obj->type == OBJ_COMMIT)
+ free_commit_buffer((struct commit *)obj);
+ return err;
}
-static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type,
+static int fsck_obj_buffer(const struct object_id *oid, enum object_type type,
unsigned long size, void *buffer, int *eaten)
{
/*
@@ -382,50 +378,51 @@ static int fsck_obj_buffer(const unsigned char *sha1, enum object_type type,
* verify_packfile(), data_valid variable for details.
*/
struct object *obj;
- obj = parse_object_buffer(sha1, type, size, buffer, eaten);
+ obj = parse_object_buffer(oid, type, size, buffer, eaten);
if (!obj) {
errors_found |= ERROR_OBJECT;
- return error("%s: object corrupt or missing", sha1_to_hex(sha1));
+ return error("%s: object corrupt or missing", oid_to_hex(oid));
}
- obj->flags = HAS_OBJ;
+ obj->flags &= ~(REACHABLE | SEEN);
+ obj->flags |= HAS_OBJ;
return fsck_obj(obj);
}
static int default_refs;
-static void fsck_handle_reflog_sha1(const char *refname, unsigned char *sha1,
- unsigned long timestamp)
+static void fsck_handle_reflog_oid(const char *refname, struct object_id *oid,
+ timestamp_t timestamp)
{
struct object *obj;
- if (!is_null_sha1(sha1)) {
- obj = lookup_object(sha1);
- if (obj) {
+ if (!is_null_oid(oid)) {
+ obj = lookup_object(oid->hash);
+ if (obj && (obj->flags & HAS_OBJ)) {
if (timestamp && name_objects)
add_decoration(fsck_walk_options.object_names,
obj,
- xstrfmt("%s@{%ld}", refname, timestamp));
- obj->used = 1;
+ xstrfmt("%s@{%"PRItime"}", refname, timestamp));
+ obj->flags |= USED;
mark_object_reachable(obj);
} else {
- error("%s: invalid reflog entry %s", refname, sha1_to_hex(sha1));
+ error("%s: invalid reflog entry %s", refname, oid_to_hex(oid));
errors_found |= ERROR_REACHABLE;
}
}
}
-static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
- const char *email, unsigned long timestamp, int tz,
+static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid,
+ const char *email, timestamp_t timestamp, int tz,
const char *message, void *cb_data)
{
const char *refname = cb_data;
if (verbose)
fprintf(stderr, "Checking reflog %s->%s\n",
- sha1_to_hex(osha1), sha1_to_hex(nsha1));
+ oid_to_hex(ooid), oid_to_hex(noid));
- fsck_handle_reflog_sha1(refname, osha1, 0);
- fsck_handle_reflog_sha1(refname, nsha1, timestamp);
+ fsck_handle_reflog_oid(refname, ooid, 0);
+ fsck_handle_reflog_oid(refname, noid, timestamp);
return 0;
}
@@ -441,7 +438,7 @@ static int fsck_handle_ref(const char *refname, const struct object_id *oid,
{
struct object *obj;
- obj = parse_object(oid->hash);
+ obj = parse_object(oid);
if (!obj) {
error("%s: invalid sha1 pointer %s", refname, oid_to_hex(oid));
errors_found |= ERROR_REACHABLE;
@@ -453,7 +450,7 @@ static int fsck_handle_ref(const char *refname, const struct object_id *oid,
errors_found |= ERROR_REFS;
}
default_refs++;
- obj->used = 1;
+ obj->flags |= USED;
if (name_objects)
add_decoration(fsck_walk_options.object_names,
obj, xstrdup(refname));
@@ -488,9 +485,42 @@ static void get_default_heads(void)
}
}
-static int fsck_loose(const unsigned char *sha1, const char *path, void *data)
+static struct object *parse_loose_object(const struct object_id *oid,
+ const char *path)
+{
+ struct object *obj;
+ void *contents;
+ enum object_type type;
+ unsigned long size;
+ int eaten;
+
+ if (read_loose_object(path, oid->hash, &type, &size, &contents) < 0)
+ return NULL;
+
+ if (!contents && type != OBJ_BLOB)
+ die("BUG: read_loose_object streamed a non-blob");
+
+ obj = parse_object_buffer(oid, type, size, contents, &eaten);
+
+ if (!eaten)
+ free(contents);
+ return obj;
+}
+
+static int fsck_loose(const struct object_id *oid, const char *path, void *data)
{
- if (fsck_sha1(sha1))
+ struct object *obj = parse_loose_object(oid, path);
+
+ if (!obj) {
+ errors_found |= ERROR_OBJECT;
+ error("%s: object corrupt or missing: %s",
+ oid_to_hex(oid), path);
+ return 0; /* keep checking other objects */
+ }
+
+ obj->flags &= ~(REACHABLE | SEEN);
+ obj->flags |= HAS_OBJ;
+ if (fsck_obj(obj))
errors_found |= ERROR_OBJECT;
return 0;
}
@@ -502,7 +532,7 @@ static int fsck_cruft(const char *basename, const char *path, void *data)
return 0;
}
-static int fsck_subdir(int nr, const char *path, void *progress)
+static int fsck_subdir(unsigned int nr, const char *path, void *progress)
{
display_progress(progress, nr + 1);
return 0;
@@ -531,7 +561,7 @@ static int fsck_head_link(void)
if (verbose)
fprintf(stderr, "Checking HEAD link\n");
- head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid.hash, NULL);
+ head_points_at = resolve_ref_unsafe("HEAD", 0, &head_oid, NULL);
if (!head_points_at) {
errors_found |= ERROR_REFS;
return error("Invalid HEAD");
@@ -564,14 +594,14 @@ static int fsck_cache_tree(struct cache_tree *it)
fprintf(stderr, "Checking cache tree\n");
if (0 <= it->entry_count) {
- struct object *obj = parse_object(it->sha1);
+ struct object *obj = parse_object(&it->oid);
if (!obj) {
error("%s: invalid sha1 pointer in cache-tree",
- sha1_to_hex(it->sha1));
+ oid_to_hex(&it->oid));
errors_found |= ERROR_REFS;
return 1;
}
- obj->used = 1;
+ obj->flags |= USED;
if (name_objects)
add_decoration(fsck_walk_options.object_names,
obj, xstrdup(":"));
@@ -584,6 +614,29 @@ static int fsck_cache_tree(struct cache_tree *it)
return err;
}
+static void mark_object_for_connectivity(const struct object_id *oid)
+{
+ struct object *obj = lookup_unknown_object(oid->hash);
+ obj->flags |= HAS_OBJ;
+}
+
+static int mark_loose_for_connectivity(const struct object_id *oid,
+ const char *path,
+ void *data)
+{
+ mark_object_for_connectivity(oid);
+ return 0;
+}
+
+static int mark_packed_for_connectivity(const struct object_id *oid,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *data)
+{
+ mark_object_for_connectivity(oid);
+ return 0;
+}
+
static char const * const fsck_usage[] = {
N_("git fsck [<options>] [<object>...]"),
NULL
@@ -609,7 +662,7 @@ static struct option fsck_opts[] = {
int cmd_fsck(int argc, const char **argv, const char *prefix)
{
- int i, heads;
+ int i;
struct alternate_object_database *alt;
errors_found = 0;
@@ -640,66 +693,64 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
git_config(fsck_config, NULL);
fsck_head_link();
- if (!connectivity_only) {
+ if (connectivity_only) {
+ for_each_loose_object(mark_loose_for_connectivity, NULL, 0);
+ for_each_packed_object(mark_packed_for_connectivity, NULL, 0);
+ } else {
fsck_object_dir(get_object_directory());
prepare_alt_odb();
- for (alt = alt_odb_list; alt; alt = alt->next) {
- /* directory name, minus trailing slash */
- size_t namelen = alt->name - alt->base - 1;
- struct strbuf name = STRBUF_INIT;
- strbuf_add(&name, alt->base, namelen);
- fsck_object_dir(name.buf);
- strbuf_release(&name);
- }
- }
+ for (alt = alt_odb_list; alt; alt = alt->next)
+ fsck_object_dir(alt->path);
+
+ if (check_full) {
+ struct packed_git *p;
+ uint32_t total = 0, count = 0;
+ struct progress *progress = NULL;
- if (check_full) {
- struct packed_git *p;
- uint32_t total = 0, count = 0;
- struct progress *progress = NULL;
+ prepare_packed_git();
- prepare_packed_git();
+ if (show_progress) {
+ for (p = packed_git; p; p = p->next) {
+ if (open_pack_index(p))
+ continue;
+ total += p->num_objects;
+ }
- if (show_progress) {
+ progress = start_progress(_("Checking objects"), total);
+ }
for (p = packed_git; p; p = p->next) {
- if (open_pack_index(p))
- continue;
- total += p->num_objects;
+ /* verify gives error messages itself */
+ if (verify_pack(p, fsck_obj_buffer,
+ progress, count))
+ errors_found |= ERROR_PACK;
+ count += p->num_objects;
}
-
- progress = start_progress(_("Checking objects"), total);
+ stop_progress(&progress);
}
- for (p = packed_git; p; p = p->next) {
- /* verify gives error messages itself */
- if (verify_pack(p, fsck_obj_buffer,
- progress, count))
- errors_found |= ERROR_PACK;
- count += p->num_objects;
- }
- stop_progress(&progress);
}
- heads = 0;
for (i = 0; i < argc; i++) {
const char *arg = argv[i];
- unsigned char sha1[20];
- if (!get_sha1(arg, sha1)) {
- struct object *obj = lookup_object(sha1);
+ struct object_id oid;
+ if (!get_oid(arg, &oid)) {
+ struct object *obj = lookup_object(oid.hash);
- /* Error is printed by lookup_object(). */
- if (!obj)
+ if (!obj || !(obj->flags & HAS_OBJ)) {
+ error("%s: object missing", oid_to_hex(&oid));
+ errors_found |= ERROR_OBJECT;
continue;
+ }
- obj->used = 1;
+ obj->flags |= USED;
if (name_objects)
add_decoration(fsck_walk_options.object_names,
obj, xstrdup(arg));
mark_object_reachable(obj);
- heads++;
continue;
}
error("invalid parameter: expected sha1, got '%s'", arg);
+ errors_found |= ERROR_OBJECT;
}
/*
@@ -707,12 +758,14 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
* default ones from .git/refs. We also consider the index file
* in this case (ie this implies --cache).
*/
- if (!heads) {
+ if (!argc) {
get_default_heads();
keep_cache_objects = 1;
}
if (keep_cache_objects) {
+ verify_index_checksum = 1;
+ verify_ce_order = 1;
read_cache();
for (i = 0; i < active_nr; i++) {
unsigned int mode;
@@ -722,11 +775,11 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
mode = active_cache[i]->ce_mode;
if (S_ISGITLINK(mode))
continue;
- blob = lookup_blob(active_cache[i]->sha1);
+ blob = lookup_blob(&active_cache[i]->oid);
if (!blob)
continue;
obj = &blob->object;
- obj->used = 1;
+ obj->flags |= USED;
if (name_objects)
add_decoration(fsck_walk_options.object_names,
obj,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 18:20:11 +0000