X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=fd.c;h=e5aa59f59382967ffd9c54e7c7a4199246bde1f1;hp=398bf2ce818345a6cc3d98648953fa05096a8b48;hb=09a864980da1eb9f1df5be566efffdd41154ddbb;hpb=55030e0d1a28ded2076d62fb9aac3539ff337275

diff --git a/fd.c b/fd.c
index 398bf2ce..e5aa59f5 100644
--- a/fd.c
+++ b/fd.c
@@ -194,7 +194,29 @@ int para_open(const char *path, int flags, mode_t mode)
 		break;
 	};
 	PARA_ERROR_LOG("failed to open %s: %s\n", path, strerror(errno));
-	return ret;
+	return -E_OPEN;
+}
+
+/**
+ * Wrapper for chdir(2).
+ *
+ * \param path the specified directory.
+ *
+ * \return Positive on success, negative on errors.
+ */
+int para_chdir(const char *path)
+{
+	int ret = chdir(path);
+
+	if (ret >= 0)
+		return 1;
+	switch (errno) {
+	case ENOENT:
+		return -E_NOENT;
+	case EACCES:
+		return -E_CHDIR_PERM;
+	};
+	return -E_CHDIR;
 }
 
 /**
@@ -231,8 +253,8 @@ int para_opendir(const char *dirname, DIR **dir, int *cwd)
 			return ret;
 		*cwd = ret;
 	}
-	ret = -E_CHDIR;
-	if (chdir(dirname) < 0)
+	ret = para_chdir(dirname);
+	if (ret < 0)
 		goto close_cwd;
 	ret = -E_OPENDIR;
 	*dir = opendir(".");