SPDX: Convert all of our single license tags to Linux Kernel style

[u-boot.git] / fs / sandbox / sandboxfs.c

diff --git a/fs/sandbox/sandboxfs.c b/fs/sandbox/sandboxfs.c
index 85079788c990f712f8711b947539e2886d8684e9..1e253611c367fe2f0b2fbd8be36ce2f54f69d684 100644 (file)
--- a/fs/sandbox/sandboxfs.c
+++ b/fs/sandbox/sandboxfs.c
@@ -1,22 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2012, Google Inc.
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <fs.h>
 #include <os.h>
 
-int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
+int sandbox_fs_set_blk_dev(struct blk_desc *rbdd, disk_partition_t *info)
 {
-       return 0;
+       /*
+        * Only accept a NULL struct blk_desc 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);
@@ -27,16 +30,31 @@ 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;
 }
 
-long sandbox_fs_write_at(const char *filename, unsigned long pos,
-                        void *buffer, unsigned long towrite)
+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;
@@ -52,7 +70,14 @@ long sandbox_fs_write_at(const char *filename, unsigned long pos,
        size = os_write(fd, buffer, towrite);
        os_close(fd);
 
-       return size;
+       if (size == -1) {
+               ret = -1;
+       } else {
+               ret = 0;
+               *actwrite = size;
+       }
+
+       return ret;
 }
 
 int sandbox_fs_ls(const char *dirname)
@@ -62,50 +87,56 @@ int sandbox_fs_ls(const char *dirname)
 
        ret = os_dirent_ls(dirname, &head);
        if (ret)
-               return ret;
+               goto out;
 
        for (node = head; node; node = node->next) {
                printf("%s %10lu %s\n", os_dirent_get_typename(node->type),
                       node->size, node->name);
        }
+out:
+       os_dirent_free(head);
 
-       return 0;
+       return ret;
 }
 
 int sandbox_fs_exists(const char *filename)
 {
-       ssize_t sz;
+       loff_t size;
+       int ret;
 
-       sz = os_get_filesize(filename);
-       return sz >= 0;
+       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, int offset, int len)
+int fs_write_sandbox(const char *filename, void *buf, loff_t offset,
+                    loff_t len, loff_t *actwrite)
 {
-       int len_written;
+       int ret;
 
-       len_written = sandbox_fs_write_at(filename, offset, buf, len);
-       if (len_written == -1) {
+       ret = sandbox_fs_write_at(filename, offset, buf, len, actwrite);
+       if (ret)
                printf("** Unable to write file %s **\n", filename);
-               return -1;
-       }
 
-       return len_written;
+       return ret;
 }