mmc: omap_hsmmc: enable 8bit interface for eMMC for AM43xx

[karo-tx-uboot.git] / fs / sandbox / sandboxfs.c

diff --git a/fs/sandbox/sandboxfs.c b/fs/sandbox/sandboxfs.c
index 02d26ff851eeecaf8c9b250155cec855f2a3bee6..5acfc03704a9b35d9f823637ffac86e06f051208 100644 (file)
--- a/fs/sandbox/sandboxfs.c
+++ b/fs/sandbox/sandboxfs.c
@@ -1,20 +1,7 @@
 /*
  * 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>
@@ -23,13 +10,17 @@
 
 int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
 {
-       return 0;
+       /*
+        * Only accept a NULL block_dev_desc_t for the sandbox, which is when
+        * hostfs interface is used
+        */
+       return rbdd != NULL;
 }
 
-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);
@@ -40,12 +31,54 @@ long sandbox_fs_read_at(const char *filename, unsigned long pos,
                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)
@@ -65,19 +98,44 @@ 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;
 }