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/*
* 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)
{
return 0;
}
long sandbox_fs_read_at(const char *filename, unsigned long pos,
void *buffer, unsigned long maxsize)
{
ssize_t size;
int fd, ret;
fd = os_open(filename, OS_O_RDONLY);
if (fd < 0)
return fd;
ret = os_lseek(fd, pos, OS_SEEK_SET);
if (ret == -1) {
os_close(fd);
return ret;
}
if (!maxsize)
maxsize = os_get_filesize(filename);
size = os_read(fd, buffer, maxsize);
os_close(fd);
return size;
}
long sandbox_fs_write_at(const char *filename, unsigned long pos,
void *buffer, unsigned long towrite)
{
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);
return size;
}
int sandbox_fs_ls(const char *dirname)
{
struct os_dirent_node *head, *node;
int ret;
ret = os_dirent_ls(dirname, &head);
if (ret)
return ret;
for (node = head; node; node = node->next) {
printf("%s %10lu %s\n", os_dirent_get_typename(node->type),
node->size, node->name);
}
return 0;
}
int sandbox_fs_exists(const char *filename)
{
ssize_t sz;
sz = os_get_filesize(filename);
return sz >= 0;
}
void sandbox_fs_close(void)
{
}
int fs_read_sandbox(const char *filename, void *buf, int offset, int len)
{
int len_read;
len_read = sandbox_fs_read_at(filename, offset, buf, len);
if (len_read == -1) {
printf("** Unable to read file %s **\n", filename);
return -1;
}
return len_read;
}
int fs_write_sandbox(const char *filename, void *buf, int offset, int len)
{
int len_written;
len_written = sandbox_fs_write_at(filename, offset, buf, len);
if (len_written == -1) {
printf("** Unable to write file %s **\n", filename);
return -1;
}
return len_written;
}
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