LXR uboot/fs/sandbox/sandboxfs.c

   1/*
   2 * Copyright (c) 2012, Google Inc.
   3 *
   4 * SPDX-License-Identifier:     GPL-2.0+
   5 */
   6
   7#include <common.h>
   8#include <fs.h>
   9#include <os.h>
  10
  11int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
  12{
  13        return 0;
  14}
  15
  16long sandbox_fs_read_at(const char *filename, unsigned long pos,
  17                             void *buffer, unsigned long maxsize)
  18{
  19        ssize_t size;
  20        int fd, ret;
  21
  22        fd = os_open(filename, OS_O_RDONLY);
  23        if (fd < 0)
  24                return fd;
  25        ret = os_lseek(fd, pos, OS_SEEK_SET);
  26        if (ret == -1) {
  27                os_close(fd);
  28                return ret;
  29        }
  30        if (!maxsize)
  31                maxsize = os_get_filesize(filename);
  32        size = os_read(fd, buffer, maxsize);
  33        os_close(fd);
  34
  35        return size;
  36}
  37
  38long sandbox_fs_write_at(const char *filename, unsigned long pos,
  39                         void *buffer, unsigned long towrite)
  40{
  41        ssize_t size;
  42        int fd, ret;
  43
  44        fd = os_open(filename, OS_O_RDWR | OS_O_CREAT);
  45        if (fd < 0)
  46                return fd;
  47        ret = os_lseek(fd, pos, OS_SEEK_SET);
  48        if (ret == -1) {
  49                os_close(fd);
  50                return ret;
  51        }
  52        size = os_write(fd, buffer, towrite);
  53        os_close(fd);
  54
  55        return size;
  56}
  57
  58int sandbox_fs_ls(const char *dirname)
  59{
  60        struct os_dirent_node *head, *node;
  61        int ret;
  62
  63        ret = os_dirent_ls(dirname, &head);
  64        if (ret)
  65                return ret;
  66
  67        for (node = head; node; node = node->next) {
  68                printf("%s %10lu %s\n", os_dirent_get_typename(node->type),
  69                       node->size, node->name);
  70        }
  71
  72        return 0;
  73}
  74
  75int sandbox_fs_exists(const char *filename)
  76{
  77        ssize_t sz;
  78
  79        sz = os_get_filesize(filename);
  80        return sz >= 0;
  81}
  82
  83void sandbox_fs_close(void)
  84{
  85}
  86
  87int fs_read_sandbox(const char *filename, void *buf, int offset, int len)
  88{
  89        int len_read;
  90
  91        len_read = sandbox_fs_read_at(filename, offset, buf, len);
  92        if (len_read == -1) {
  93                printf("** Unable to read file %s **\n", filename);
  94                return -1;
  95        }
  96
  97        return len_read;
  98}
  99
 100int fs_write_sandbox(const char *filename, void *buf, int offset, int len)
 101{
 102        int len_written;
 103
 104        len_written = sandbox_fs_write_at(filename, offset, buf, len);
 105        if (len_written == -1) {
 106                printf("** Unable to write file %s **\n", filename);
 107                return -1;
 108        }
 109
 110        return len_written;
 111}
 112