X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=refs.c;h=0f3491f871bd692151b42307b833e633b041e948;hb=1100ac81a90b03e0c037a286569a340decf7489b;hp=97506a4ebdfbd164abad6be76d7160db171d9148;hpb=8ac3a61f59173d4a9a328518be83a25df610a5ef;p=git.git

diff --git a/refs.c b/refs.c
index 97506a4e..0f3491f8 100644
--- a/refs.c
+++ b/refs.c
@@ -6,50 +6,6 @@
 /* We allow "recursive" symbolic refs. Only within reason, though */
 #define MAXDEPTH 5
 
-#ifndef USE_SYMLINK_HEAD
-#define USE_SYMLINK_HEAD 1
-#endif
-
-int validate_symref(const char *path)
-{
-	struct stat st;
-	char *buf, buffer[256];
-	int len, fd;
-
-	if (lstat(path, &st) < 0)
-		return -1;
-
-	/* Make sure it is a "refs/.." symlink */
-	if (S_ISLNK(st.st_mode)) {
-		len = readlink(path, buffer, sizeof(buffer)-1);
-		if (len >= 5 && !memcmp("refs/", buffer, 5))
-			return 0;
-		return -1;
-	}
-
-	/*
-	 * Anything else, just open it and try to see if it is a symbolic ref.
-	 */
-	fd = open(path, O_RDONLY);
-	if (fd < 0)
-		return -1;
-	len = read(fd, buffer, sizeof(buffer)-1);
-	close(fd);
-
-	/*
-	 * Is it a symbolic ref?
-	 */
-	if (len < 4 || memcmp("ref:", buffer, 4))
-		return -1;
-	buf = buffer + 4;
-	len -= 4;
-	while (len && isspace(*buf))
-		buf++, len--;
-	if (len >= 5 && !memcmp("refs/", buf, 5))
-		return 0;
-	return -1;
-}
-
 const char *resolve_ref(const char *path, unsigned char *sha1, int reading)
 {
 	int depth = MAXDEPTH, len;
@@ -116,14 +72,19 @@ const char *resolve_ref(const char *path, unsigned char *sha1, int reading)
 
 int create_symref(const char *git_HEAD, const char *refs_heads_master)
 {
-#if USE_SYMLINK_HEAD
-	unlink(git_HEAD);
-	return symlink(refs_heads_master, git_HEAD);
-#else
 	const char *lockpath;
 	char ref[1000];
 	int fd, len, written;
 
+#ifndef NO_SYMLINK_HEAD
+	if (prefer_symlink_refs) {
+		unlink(git_HEAD);
+		if (!symlink(refs_heads_master, git_HEAD))
+			return 0;
+		fprintf(stderr, "no symlink - falling back to symbolic ref\n");
+	}
+#endif
+
 	len = snprintf(ref, sizeof(ref), "ref: %s\n", refs_heads_master);
 	if (sizeof(ref) <= len) {
 		error("refname too long: %s", refs_heads_master);
@@ -144,7 +105,6 @@ int create_symref(const char *git_HEAD, const char *refs_heads_master)
 		return -3;
 	}
 	return 0;
-#endif
 }
 
 int read_ref(const char *filename, unsigned char *sha1)
@@ -154,7 +114,7 @@ int read_ref(const char *filename, unsigned char *sha1)
 	return -1;
 }
 
-static int do_for_each_ref(const char *base, int (*fn)(const char *path, const unsigned char *sha1))
+static int do_for_each_ref(const char *base, int (*fn)(const char *path, const unsigned char *sha1), int trim)
 {
 	int retval = 0;
 	DIR *dir = opendir(git_path("%s", base));
@@ -186,16 +146,21 @@ static int do_for_each_ref(const char *base, int (*fn)(const char *path, const u
 			if (stat(git_path("%s", path), &st) < 0)
 				continue;
 			if (S_ISDIR(st.st_mode)) {
-				retval = do_for_each_ref(path, fn);
+				retval = do_for_each_ref(path, fn, trim);
 				if (retval)
 					break;
 				continue;
 			}
-			if (read_ref(git_path("%s", path), sha1) < 0)
+			if (read_ref(git_path("%s", path), sha1) < 0) {
+				error("%s points nowhere!", path);
 				continue;
-			if (!has_sha1_file(sha1))
+			}
+			if (!has_sha1_file(sha1)) {
+				error("%s does not point to a valid "
+				      "commit object!", path);
 				continue;
-			retval = fn(path, sha1);
+			}
+			retval = fn(path + trim, sha1);
 			if (retval)
 				break;
 		}
@@ -215,7 +180,22 @@ int head_ref(int (*fn)(const char *path, const unsigned char *sha1))
 
 int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1))
 {
-	return do_for_each_ref("refs", fn);
+	return do_for_each_ref("refs", fn, 0);
+}
+
+int for_each_tag_ref(int (*fn)(const char *path, const unsigned char *sha1))
+{
+	return do_for_each_ref("refs/tags", fn, 10);
+}
+
+int for_each_branch_ref(int (*fn)(const char *path, const unsigned char *sha1))
+{
+	return do_for_each_ref("refs/heads", fn, 11);
+}
+
+int for_each_remote_ref(int (*fn)(const char *path, const unsigned char *sha1))
+{
+	return do_for_each_ref("refs/remotes", fn, 13);
 }
 
 static char *ref_file_name(const char *ref)
@@ -240,12 +220,9 @@ static char *ref_lock_file_name(const char *ref)
 
 int get_ref_sha1(const char *ref, unsigned char *sha1)
 {
-	const char *filename;
-
 	if (check_ref_format(ref))
 		return -1;
-	filename = git_path("refs/%s", ref);
-	return read_ref(filename, sha1);
+	return read_ref(git_path("refs/%s", ref), sha1);
 }
 
 static int lock_ref_file(const char *filename, const char *lock_filename,
@@ -308,7 +285,7 @@ static int write_ref_file(const char *filename,
 	char term = '\n';
 	if (write(fd, hex, 40) < 40 ||
 	    write(fd, &term, 1) < 1) {
-		error("Couldn't write %s\n", filename);
+		error("Couldn't write %s", filename);
 		close(fd);
 		return -1;
 	}
@@ -328,6 +305,8 @@ int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1)
 		return -1;
 	filename = ref_file_name(ref);
 	lock_filename = ref_lock_file_name(ref);
+	if (safe_create_leading_directories(filename))
+		die("unable to create leading directory for %s", filename);
 	retval = write_ref_file(filename, lock_filename, fd, sha1);
 	free(filename);
 	free(lock_filename);
@@ -347,7 +326,9 @@ int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1)
 static inline int bad_ref_char(int ch)
 {
 	return (((unsigned) ch) <= ' ' ||
-		ch == '~' || ch == '^' || ch == ':');
+		ch == '~' || ch == '^' || ch == ':' ||
+		/* 2.13 Pattern Matching Notation */
+		ch == '?' || ch == '*' || ch == '[');
 }
 
 int check_ref_format(const char *ref)
@@ -394,6 +375,8 @@ int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1)
 		return -1;
 	filename = ref_file_name(ref);
 	lock_filename = ref_lock_file_name(ref);
+	if (safe_create_leading_directories(filename))
+		die("unable to create leading directory for %s", filename);
 	fd = open(lock_filename, O_WRONLY | O_CREAT | O_EXCL, 0666);
 	if (fd < 0) {
 		error("Writing %s", lock_filename);