/*
* Copyright (c) 2012, Google Inc.
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
return 0;
}
-long sandbox_fs_read_at(const char *filename, unsigned long pos,
- void *buffer, unsigned long maxsize)
+int sandbox_fs_read_at(const char *filename, loff_t pos, void *buffer,
+ loff_t maxsize, loff_t *actread)
{
- ssize_t size;
+ loff_t size;
int fd, ret;
fd = os_open(filename, OS_O_RDONLY);
os_close(fd);
return ret;
}
- if (!maxsize)
- maxsize = os_get_filesize(filename);
+ if (!maxsize) {
+ ret = os_get_filesize(filename, &size);
+ if (ret) {
+ os_close(fd);
+ return ret;
+ }
+
+ maxsize = size;
+ }
+
size = os_read(fd, buffer, maxsize);
os_close(fd);
- return size;
+ if (size < 0) {
+ ret = -1;
+ } else {
+ ret = 0;
+ *actread = size;
+ }
+
+ return ret;
+}
+
+int sandbox_fs_write_at(const char *filename, loff_t pos, void *buffer,
+ loff_t towrite, loff_t *actwrite)
+{
+ ssize_t size;
+ int fd, ret;
+
+ fd = os_open(filename, OS_O_RDWR | OS_O_CREAT);
+ if (fd < 0)
+ return fd;
+ ret = os_lseek(fd, pos, OS_SEEK_SET);
+ if (ret == -1) {
+ os_close(fd);
+ return ret;
+ }
+ size = os_write(fd, buffer, towrite);
+ os_close(fd);
+
+ if (size == -1) {
+ ret = -1;
+ } else {
+ ret = 0;
+ *actwrite = size;
+ }
+
+ return ret;
}
int sandbox_fs_ls(const char *dirname)
return 0;
}
+int sandbox_fs_exists(const char *filename)
+{
+ loff_t size;
+ int ret;
+
+ ret = os_get_filesize(filename, &size);
+ return ret == 0;
+}
+
+int sandbox_fs_size(const char *filename, loff_t *size)
+{
+ return os_get_filesize(filename, size);
+}
+
void sandbox_fs_close(void)
{
}
-int fs_read_sandbox(const char *filename, void *buf, int offset, int len)
+int fs_read_sandbox(const char *filename, void *buf, loff_t offset, loff_t len,
+ loff_t *actread)
{
- int len_read;
+ int ret;
- len_read = sandbox_fs_read_at(filename, offset, buf, len);
- if (len_read == -1) {
+ ret = sandbox_fs_read_at(filename, offset, buf, len, actread);
+ if (ret)
printf("** Unable to read file %s **\n", filename);
- return -1;
- }
- return len_read;
+ return ret;
+}
+
+int fs_write_sandbox(const char *filename, void *buf, loff_t offset,
+ loff_t len, loff_t *actwrite)
+{
+ int ret;
+
+ ret = sandbox_fs_write_at(filename, offset, buf, len, actwrite);
+ if (ret)
+ printf("** Unable to write file %s **\n", filename);
+
+ return ret;
}