Merge branch 'rs/strbuf-getcwd'

Reduce the use of fixed sized buffer passed to getcwd() calls
by introducing xgetcwd() helper.

* rs/strbuf-getcwd:
  use strbuf_add_absolute_path() to add absolute paths
  abspath: convert absolute_path() to strbuf
  use xgetcwd() to set $GIT_DIR
  use xgetcwd() to get the current directory or die
  wrapper: add xgetcwd()
  abspath: convert real_path_internal() to strbuf
  abspath: use strbuf_getcwd() to remember original working directory
  setup: convert setup_git_directory_gently_1 et al. to strbuf
  unix-sockets: use strbuf_getcwd()
  strbuf: add strbuf_getcwd()

1 files changed, 7 insertions, 7 deletions

diff --git a/unix-socket.c b/unix-socket.c
index 91bd6b89d4..19ed48be99 100644
--- a/unix-socket.c
+++ b/unix-socket.c
@@ -18,12 +18,12 @@ static int chdir_len(const char *orig, int len)
 }
 
 struct unix_sockaddr_context {
-	char orig_dir[PATH_MAX];
+	char *orig_dir;
 };
 
 static void unix_sockaddr_cleanup(struct unix_sockaddr_context *ctx)
 {
-	if (!ctx->orig_dir[0])
+	if (!ctx->orig_dir)
 		return;
 	/*
 	 * If we fail, we can't just return an error, since we have
@@ -32,6 +32,7 @@ static void unix_sockaddr_cleanup(struct unix_sockaddr_context *ctx)
 	 */
 	if (chdir(ctx->orig_dir) < 0)
 		die("unable to restore original working directory");
+	free(ctx->orig_dir);
 }
 
 static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path,
@@ -39,10 +40,11 @@ static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path,
 {
 	int size = strlen(path) + 1;
 
-	ctx->orig_dir[0] = '\0';
+	ctx->orig_dir = NULL;
 	if (size > sizeof(sa->sun_path)) {
 		const char *slash = find_last_dir_sep(path);
 		const char *dir;
+		struct strbuf cwd = STRBUF_INIT;
 
 		if (!slash) {
 			errno = ENAMETOOLONG;
@@ -56,11 +58,9 @@ static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path,
 			errno = ENAMETOOLONG;
 			return -1;
 		}
-
-		if (!getcwd(ctx->orig_dir, sizeof(ctx->orig_dir))) {
-			errno = ENAMETOOLONG;
+		if (strbuf_getcwd(&cwd))
 			return -1;
-		}
+		ctx->orig_dir = strbuf_detach(&cwd, NULL);
 		if (chdir_len(dir, slash - dir) < 0)
 			return -1;
 	}