Attempt to fix /dev/mapper/control transparently if it's wrong.

1 files changed, 73 insertions, 0 deletions

diff --git a/libdm/libdm-file.c b/libdm/libdm-file.c
new file mode 100644
index 00000000..5295b9e9
--- /dev/null
+++ b/libdm/libdm-file.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of the device-mapper userspace tools.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lib.h"
+#include "libdm-file.h"
+
+#include <sys/file.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <malloc.h>
+
+static int _create_dir_recursive(const char *dir)
+{
+	char *orig, *s;
+	int rc;
+
+	log_verbose("Creating directory \"%s\"", dir);
+	/* Create parent directories */
+	orig = s = strdup(dir);
+	while ((s = strchr(s, '/')) != NULL) {
+		*s = '\0';
+		if (*orig) {
+			rc = mkdir(orig, 0777);
+			if (rc < 0 && errno != EEXIST) {
+				log_error("%s: mkdir failed: %s", orig,
+					  strerror(errno));
+				free(orig);
+				return 0;
+			}
+		}
+		*s++ = '/';
+	}
+	free(orig);
+
+	/* Create final directory */
+	rc = mkdir(dir, 0777);
+	if (rc < 0 && errno != EEXIST) {
+		log_error("%s: mkdir failed: %s", orig,
+			  strerror(errno));
+		return 0;
+	}
+	return 1;
+}
+
+int create_dir(const char *dir)
+{
+	struct stat info;
+
+	if (!*dir)
+		return 1;
+
+	if (stat(dir, &info) < 0)
+		return _create_dir_recursive(dir);
+
+	if (S_ISDIR(info.st_mode))
+		return 1;
+
+	log_error("Directory \"%s\" not found", dir);
+	return 0;
+}
+