X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=fsck-cache.c;h=8e21bf1327a60840273973c08216c1387aac95b8;hb=0c04094bc153ef1073524267b4eb49989c7b8ccb;hp=44ad5f169530fb7ab70a17f2e04b8367643faad6;hpb=f3bf92240956241e6b21e80a1c281ec7716b9f23;p=git.git

diff --git a/fsck-cache.c b/fsck-cache.c
index 44ad5f16..8e21bf13 100644
--- a/fsck-cache.c
+++ b/fsck-cache.c
@@ -6,6 +6,7 @@
 #include "tree.h"
 #include "blob.h"
 #include "tag.h"
+#include "refs.h"
 #include "pack.h"
 
 #define REACHABLE 0x0001
@@ -303,76 +304,32 @@ static int fsck_dir(int i, char *path)
 	return 0;
 }
 
-static int read_sha1_reference(const char *path)
+static int default_refs = 0;
+
+static int fsck_handle_ref(const char *refname, const unsigned char *sha1)
 {
-	char hexname[60];
-	unsigned char sha1[20];
-	int fd = open(path, O_RDONLY), len;
 	struct object *obj;
 
-	if (fd < 0)
-		return -1;
-
-	len = read(fd, hexname, sizeof(hexname));
-	close(fd);
-	if (len < 40)
-		return -1;
-
-	if (get_sha1_hex(hexname, sha1) < 0)
-		return -1;
-
 	obj = lookup_object(sha1);
 	if (!obj) {
-		if (!standalone && has_sha1_file(sha1))
-			return 0; /* it is in pack */
-		return error("%s: invalid sha1 pointer %.40s", path, hexname);
+		if (!standalone && has_sha1_file(sha1)) {
+			default_refs++;
+			return 0; /* it is in a pack */
+		}
+		error("%s: invalid sha1 pointer %s", refname, sha1_to_hex(sha1));
+		/* We'll continue with the rest despite the error.. */
+		return 0;
 	}
-
+	default_refs++;
 	obj->used = 1;
 	mark_reachable(obj, REACHABLE);
 	return 0;
 }
 
-static int find_file_objects(const char *base, const char *name)
-{
-	int baselen = strlen(base);
-	int namelen = strlen(name);
-	char *path = xmalloc(baselen + namelen + 2);
-	struct stat st;
-
-	memcpy(path, base, baselen);
-	path[baselen] = '/';
-	memcpy(path + baselen + 1, name, namelen+1);
-	if (stat(path, &st) < 0)
-		return 0;
-
-	/*
-	 * Recurse into directories
-	 */
-	if (S_ISDIR(st.st_mode)) {
-		int count = 0;
-		DIR *dir = opendir(path);
-		if (dir) {
-			struct dirent *de;
-			while ((de = readdir(dir)) != NULL) {
-				if (de->d_name[0] == '.')
-					continue;
-				count += find_file_objects(path, de->d_name);
-			}
-			closedir(dir);
-		}
-		return count;
-	}
-	if (S_ISREG(st.st_mode))
-		return read_sha1_reference(path) == 0;
-	return 0;
-}
-
 static void get_default_heads(void)
 {
-	char *git_dir = gitenv(GIT_DIR_ENVIRONMENT) ? : DEFAULT_GIT_DIR_ENVIRONMENT;
-	int count = find_file_objects(git_dir, "refs");
-	if (!count)
+	for_each_ref(fsck_handle_ref);
+	if (!default_refs)
 		die("No default references");
 }
 
@@ -387,6 +344,31 @@ static void fsck_object_dir(const char *path)
 	fsck_sha1_list();
 }
 
+static int fsck_head_link(void)
+{
+	int fd, count;
+	char hex[40];
+	unsigned char sha1[20];
+	static char path[PATH_MAX], link[PATH_MAX];
+	const char *git_dir = gitenv(GIT_DIR_ENVIRONMENT) ? : DEFAULT_GIT_DIR_ENVIRONMENT;
+
+	snprintf(path, sizeof(path), "%s/HEAD", git_dir);
+	if (readlink(path, link, sizeof(link)) < 0)
+		return error("HEAD is not a symlink");
+	if (strncmp("refs/heads/", link, 11))
+		return error("HEAD points to something strange (%s)", link);
+	fd = open(path, O_RDONLY);
+	if (fd < 0)
+		return error("HEAD: %s", strerror(errno));
+	count = read(fd, hex, sizeof(hex));
+	close(fd);
+	if (count < 0)
+		return error("HEAD: %s", strerror(errno));
+	if (count < 40 || get_sha1_hex(hex, sha1))
+		return error("HEAD: not a valid git pointer");
+	return 0;
+}
+
 int main(int argc, char **argv)
 {
 	int i, heads;
@@ -427,15 +409,18 @@ int main(int argc, char **argv)
 	if (standalone)
 		unsetenv("GIT_ALTERNATE_OBJECT_DIRECTORIES");
 
+	fsck_head_link();
 	fsck_object_dir(get_object_directory());
 	if (check_full) {
 		int j;
 		struct packed_git *p;
 		prepare_alt_odb();
 		for (j = 0; alt_odb[j].base; j++) {
-			alt_odb[j].name[-1] = 0; /* was slash */
-			fsck_object_dir(alt_odb[j].base);
-			alt_odb[j].name[-1] = '/';
+			char namebuf[PATH_MAX];
+			int namelen = alt_odb[j].name - alt_odb[j].base;
+			memcpy(namebuf, alt_odb[j].base, namelen);
+			namebuf[namelen - 1] = 0;
+			fsck_object_dir(namebuf);
 		}
 		prepare_packed_git();
 		for (p = packed_git; p; p = p->next)