mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-11 13:46:17 +09:00
7eb2c8d573
This allows write of files from the host filesystem in sandbox. There is currently no concept of overwriting the file and removing its existing contents - all writing is done on top of what is there. This means that writing 10 bytes to the start of a 1KB file will only update those 10 bytes, not truncate the file to 10 byte slong. If the file does not exist it is created. Signed-off-by: Simon Glass <sjg@chromium.org>
117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
/*
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* Copyright (c) 2012, Google Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <fs.h>
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#include <os.h>
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int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
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{
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return 0;
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}
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long sandbox_fs_read_at(const char *filename, unsigned long pos,
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void *buffer, unsigned long maxsize)
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{
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ssize_t size;
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int fd, ret;
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fd = os_open(filename, OS_O_RDONLY);
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if (fd < 0)
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return fd;
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ret = os_lseek(fd, pos, OS_SEEK_SET);
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if (ret == -1) {
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os_close(fd);
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return ret;
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}
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if (!maxsize)
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maxsize = os_get_filesize(filename);
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size = os_read(fd, buffer, maxsize);
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os_close(fd);
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return size;
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}
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long sandbox_fs_write_at(const char *filename, unsigned long pos,
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void *buffer, unsigned long towrite)
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{
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ssize_t size;
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int fd, ret;
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fd = os_open(filename, OS_O_RDWR | OS_O_CREAT);
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if (fd < 0)
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return fd;
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ret = os_lseek(fd, pos, OS_SEEK_SET);
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if (ret == -1) {
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os_close(fd);
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return ret;
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}
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size = os_write(fd, buffer, towrite);
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os_close(fd);
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return size;
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}
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int sandbox_fs_ls(const char *dirname)
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{
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struct os_dirent_node *head, *node;
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int ret;
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ret = os_dirent_ls(dirname, &head);
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if (ret)
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return ret;
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for (node = head; node; node = node->next) {
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printf("%s %10lu %s\n", os_dirent_get_typename(node->type),
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node->size, node->name);
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}
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return 0;
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}
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void sandbox_fs_close(void)
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{
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}
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int fs_read_sandbox(const char *filename, void *buf, int offset, int len)
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{
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int len_read;
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len_read = sandbox_fs_read_at(filename, offset, buf, len);
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if (len_read == -1) {
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printf("** Unable to read file %s **\n", filename);
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return -1;
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}
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return len_read;
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}
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int fs_write_sandbox(const char *filename, void *buf, int offset, int len)
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{
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int len_written;
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len_written = sandbox_fs_write_at(filename, offset, buf, len);
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if (len_written == -1) {
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printf("** Unable to write file %s **\n", filename);
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return -1;
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}
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return len_written;
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}
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