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https://github.com/brain-hackers/u-boot-brain
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85300a9a9d
Only do sandbox filesystem access when using the hostfs device interface, rather then falling back to it in all cases. This prevents confusion situations due to the fallback being taken rather then an unsupported error being raised. Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
142 lines
2.4 KiB
C
142 lines
2.4 KiB
C
/*
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* Copyright (c) 2012, Google Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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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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/*
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* Only accept a NULL block_dev_desc_t for the sandbox, which is when
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* hostfs interface is used
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*/
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return rbdd != NULL;
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}
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int sandbox_fs_read_at(const char *filename, loff_t pos, void *buffer,
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loff_t maxsize, loff_t *actread)
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{
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loff_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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ret = os_get_filesize(filename, &size);
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if (ret) {
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os_close(fd);
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return ret;
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}
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maxsize = size;
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}
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size = os_read(fd, buffer, maxsize);
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os_close(fd);
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if (size < 0) {
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ret = -1;
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} else {
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ret = 0;
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*actread = size;
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}
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return ret;
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}
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int sandbox_fs_write_at(const char *filename, loff_t pos, void *buffer,
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loff_t towrite, loff_t *actwrite)
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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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if (size == -1) {
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ret = -1;
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} else {
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ret = 0;
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*actwrite = size;
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}
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return ret;
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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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int sandbox_fs_exists(const char *filename)
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{
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loff_t size;
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int ret;
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ret = os_get_filesize(filename, &size);
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return ret == 0;
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}
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int sandbox_fs_size(const char *filename, loff_t *size)
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{
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return os_get_filesize(filename, size);
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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, loff_t offset, loff_t len,
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loff_t *actread)
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{
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int ret;
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ret = sandbox_fs_read_at(filename, offset, buf, len, actread);
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if (ret)
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printf("** Unable to read file %s **\n", filename);
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return ret;
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}
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int fs_write_sandbox(const char *filename, void *buf, loff_t offset,
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loff_t len, loff_t *actwrite)
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{
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int ret;
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ret = sandbox_fs_write_at(filename, offset, buf, len, actwrite);
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if (ret)
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printf("** Unable to write file %s **\n", filename);
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return ret;
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}
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