#include <sys/types.h>
#include <dirent.h>
-/*
- * These two functions should build up a graph in memory about
- * what objects we've referenced, and found, and types..
- *
- * Right now we don't do that kind of reachability checking. Yet.
- */
-static void mark_needs_sha1(unsigned char *parent, const char * type, unsigned char *child)
-{
-}
+#include "commit.h"
+#include "tree.h"
+#include "blob.h"
+#include "tag.h"
-static int mark_sha1_seen(unsigned char *sha1, char *tag)
-{
- return 0;
-}
+#define REACHABLE 0x0001
+
+static int show_root = 0;
+static int show_tags = 0;
+static int show_unreachable = 0;
+static unsigned char head_sha1[20];
-static int fsck_tree(unsigned char *sha1, void *data, unsigned long size)
+static void check_connectivity(void)
{
- int warn_old_tree = 1;
-
- while (size) {
- int len = 1+strlen(data);
- unsigned char *file_sha1 = data + len;
- char *path = strchr(data, ' ');
- unsigned int mode;
- if (size < len + 20 || !path || sscanf(data, "%o", &mode) != 1)
- return -1;
+ int i;
+
+ /* Look up all the requirements, warn about missing objects.. */
+ for (i = 0; i < nr_objs; i++) {
+ struct object *obj = objs[i];
+ struct object_list *refs;
+
+ if (show_unreachable && !(obj->flags & REACHABLE)) {
+ printf("unreachable %s %s\n", obj->type, sha1_to_hex(obj->sha1));
+ continue;
+ }
- /* Warn about trees that don't do the recursive thing.. */
- if (warn_old_tree && strchr(path, '/')) {
- fprintf(stderr, "warning: fsck-cache: tree %s has full pathnames in it\n", sha1_to_hex(sha1));
- warn_old_tree = 0;
+ if (!obj->parsed) {
+ printf("missing %s %s\n", obj->type,
+ sha1_to_hex(obj->sha1));
+ }
+ if (!obj->used) {
+ printf("dangling %s %s\n", obj->type,
+ sha1_to_hex(obj->sha1));
}
+ for (refs = obj->refs; refs; refs = refs->next) {
+ if (!refs->item->parsed) {
+ printf("broken link from %s\n",
+ sha1_to_hex(obj->sha1));
+ printf(" to %s\n",
+ sha1_to_hex(refs->item->sha1));
+ }
+ }
+ }
+}
- data += len + 20;
- size -= len + 20;
- mark_needs_sha1(sha1, S_ISDIR(mode) ? "tree" : "blob", file_sha1);
+static int fsck_tree(struct tree *item)
+{
+ if (item->has_full_path) {
+ fprintf(stderr, "warning: fsck-cache: tree %s "
+ "has full pathnames in it\n",
+ sha1_to_hex(item->object.sha1));
}
return 0;
}
-static int fsck_commit(unsigned char *sha1, void *data, unsigned long size)
+static int fsck_commit(struct commit *commit)
{
- int parents;
- unsigned char tree_sha1[20];
- unsigned char parent_sha1[20];
-
- if (memcmp(data, "tree ", 5))
- return -1;
- if (get_sha1_hex(data + 5, tree_sha1) < 0)
+ if (!commit->tree)
return -1;
- mark_needs_sha1(sha1, "tree", tree_sha1);
- data += 5 + 40 + 1; /* "tree " + <hex sha1> + '\n' */
- parents = 0;
- while (!memcmp(data, "parent ", 7)) {
- if (get_sha1_hex(data + 7, parent_sha1) < 0)
- return -1;
- mark_needs_sha1(sha1, "commit", parent_sha1);
- data += 7 + 40 + 1; /* "parent " + <hex sha1> + '\n' */
- parents++;
- }
- if (!parents)
- printf("root: %s\n", sha1_to_hex(sha1));
+ if (!commit->parents && show_root)
+ printf("root %s\n", sha1_to_hex(commit->object.sha1));
+ if (!commit->date)
+ printf("bad commit date in %s\n",
+ sha1_to_hex(commit->object.sha1));
return 0;
}
-static int fsck_entry(unsigned char *sha1, char *tag, void *data, unsigned long size)
+static int fsck_tag(struct tag *tag)
{
- if (!strcmp(tag, "blob")) {
- /* Nothing to check */;
- } else if (!strcmp(tag, "tree")) {
- if (fsck_tree(sha1, data, size) < 0)
- return -1;
- } else if (!strcmp(tag, "commit")) {
- if (fsck_commit(sha1, data, size) < 0)
- return -1;
- } else
- return -1;
- return mark_sha1_seen(sha1, tag);
+ if (!show_tags)
+ return 0;
+
+ printf("tagged %s %s",
+ tag->tagged->type,
+ sha1_to_hex(tag->tagged->sha1));
+ printf(" (%s) in %s\n",
+ tag->tag, sha1_to_hex(tag->object.sha1));
+ return 0;
}
static int fsck_name(char *hex)
{
unsigned char sha1[20];
if (!get_sha1_hex(hex, sha1)) {
- unsigned long mapsize;
- void *map = map_sha1_file(sha1, &mapsize);
- if (map) {
- char type[100];
- unsigned long size;
- void *buffer = NULL;
- if (!check_sha1_signature(sha1, map, mapsize))
- buffer = unpack_sha1_file(map, mapsize, type, &size);
- munmap(map, mapsize);
- if (buffer && !fsck_entry(sha1, type, buffer, size))
- return 0;
- }
+ struct object *obj = parse_object(sha1);
+ if (!obj)
+ return -1;
+ if (obj->type == blob_type)
+ return 0;
+ if (obj->type == tree_type)
+ return fsck_tree((struct tree *) obj);
+ if (obj->type == commit_type)
+ return fsck_commit((struct commit *) obj);
+ if (obj->type == tag_type)
+ return fsck_tag((struct tag *) obj);
}
return -1;
}
struct dirent *de;
if (!dir) {
- fprintf(stderr, "missing sha1 directory '%s'", path);
- return -1;
+ return error("missing sha1 directory '%s'", path);
}
while ((de = readdir(dir)) != NULL) {
int main(int argc, char **argv)
{
- int i;
+ int i, heads;
char *sha1_dir;
- if (argc != 1)
- usage("fsck-cache");
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+
+ if (!strcmp(arg, "--unreachable")) {
+ show_unreachable = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--tags")) {
+ show_tags = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--root")) {
+ show_root = 1;
+ continue;
+ }
+ if (*arg == '-')
+ usage("fsck-cache [--tags] [[--unreachable] <head-sha1>*]");
+ }
+
sha1_dir = getenv(DB_ENVIRONMENT) ? : DEFAULT_DB_ENVIRONMENT;
for (i = 0; i < 256; i++) {
static char dir[4096];
sprintf(dir, "%s/%02x", sha1_dir, i);
fsck_dir(i, dir);
}
+
+ heads = 0;
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+
+ if (*arg == '-')
+ continue;
+
+ if (!get_sha1_hex(arg, head_sha1)) {
+ struct commit *commit = lookup_commit(head_sha1);
+ struct object *obj;
+
+ /* Error is printed by lookup_commit(). */
+ if (!commit)
+ continue;
+
+ obj = &commit->object;
+ obj->used = 1;
+ mark_reachable(obj, REACHABLE);
+ heads++;
+ continue;
+ }
+ error("expected sha1, got %s", arg);
+ }
+
+ if (!heads) {
+ if (show_unreachable) {
+ fprintf(stderr, "unable to do reachability without a head\n");
+ show_unreachable = 0;
+ }
+ fprintf(stderr, "expect dangling commits - potential heads - due to lack of head information\n");
+ }
+
+ check_connectivity();
return 0;
}
projects / git.git / blobdiff