Move create_dirs to storage.c, add file read/write utilities

1 files changed, 125 insertions, 0 deletions

diff --git a/src/storage.c b/src/storage.c
new file mode 100644
index 00000000..d66f20f4
--- /dev/null
+++ b/src/storage.c
@@ -0,0 +1,125 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2008-2009  Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <glib.h>
+
+#include <ofono/types.h>
+#include "storage.h"
+
+int create_dirs(const char *filename, const mode_t mode)
+{
+	struct stat st;
+	char *dir;
+	const char *prev, *next;
+	int err;
+
+	err = stat(filename, &st);
+	if (!err && S_ISREG(st.st_mode))
+		return 0;
+
+	dir = g_malloc(strlen(filename) + 1);
+	strcpy(dir, "/");
+
+	for (prev = filename; (next = strchr(prev + 1, '/')); prev = next)
+		if (next > prev + 1) {
+			strncat(dir, prev + 1, next - prev);
+
+			if (mkdir(dir, mode) && errno != EEXIST) {
+				g_free(dir);
+				return -1;
+			}
+		}
+
+	g_free(dir);
+	return 0;
+}
+
+ssize_t read_file(unsigned char *buffer, size_t len,
+			const char *path_fmt, ...) {
+	va_list ap;
+	char *path;
+	ssize_t r;
+	int fd;
+
+	va_start(ap, path_fmt);
+	path = g_strdup_vprintf(path_fmt, ap);
+	va_end(ap);
+
+	fd = TFR(open(path, O_RDONLY));
+
+	g_free(path);
+
+	if (fd == -1)
+		return -1;
+
+	r = TFR(read(fd, buffer, len));
+
+	TFR(close(fd));
+
+	return r;
+}
+
+ssize_t write_file(const unsigned char *buffer, size_t len, mode_t mode,
+			const char *path_fmt, ...) {
+	va_list ap;
+	char *path;
+	ssize_t r;
+	int fd;
+
+	va_start(ap, path_fmt);
+	path = g_strdup_vprintf(path_fmt, ap);
+	va_end(ap);
+
+	if (create_dirs(path, mode | S_IXUSR) != 0) {
+		g_free(path);
+		return -1;
+	}
+
+	fd = TFR(open(path, O_WRONLY | O_CREAT | O_TRUNC, mode));
+	if (fd == -1) {
+		g_free(path);
+		return -1;
+	}
+
+	r = TFR(write(fd, buffer, len));
+
+	TFR(close(fd));
+
+	if (r != (ssize_t) len) {
+		unlink(path);
+		r = -1;
+	}
+
+	g_free(path);
+	return r;
+}