mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
db4ec4269e
When trying to bind to a non-existent file the following output is displayed: => host bind 0 non_existent Failed to access host backing file 'non_existent' exit not allowed from main input shell. The last line is quite unexpected and due to an incorrect return value. If do_host_bind() fails, return CMD_RET_FAILURE (= 1). Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
186 lines
4.5 KiB
C
186 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2012, Google Inc.
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <fs.h>
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#include <part.h>
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#include <sandboxblockdev.h>
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#include <dm/device_compat.h>
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#include <linux/errno.h>
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static int host_curr_device = -1;
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static int do_host_load(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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return do_load(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
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}
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static int do_host_ls(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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return do_ls(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
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}
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static int do_host_size(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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return do_size(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
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}
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static int do_host_save(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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return do_save(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
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}
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static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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if (argc < 2 || argc > 3)
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return CMD_RET_USAGE;
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char *ep;
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char *dev_str = argv[1];
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char *file = argc >= 3 ? argv[2] : NULL;
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int dev = simple_strtoul(dev_str, &ep, 16);
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if (*ep) {
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printf("** Bad device specification %s **\n", dev_str);
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return CMD_RET_USAGE;
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}
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return !!host_dev_bind(dev, file);
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}
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static int do_host_info(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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if (argc < 1 || argc > 2)
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return CMD_RET_USAGE;
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int min_dev = 0;
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int max_dev = CONFIG_HOST_MAX_DEVICES - 1;
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if (argc >= 2) {
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char *ep;
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char *dev_str = argv[1];
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int dev = simple_strtoul(dev_str, &ep, 16);
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if (*ep) {
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printf("** Bad device specification %s **\n", dev_str);
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return CMD_RET_USAGE;
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}
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min_dev = dev;
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max_dev = dev;
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}
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int dev;
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printf("%3s %12s %s\n", "dev", "blocks", "path");
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for (dev = min_dev; dev <= max_dev; dev++) {
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struct blk_desc *blk_dev;
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int ret;
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printf("%3d ", dev);
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ret = host_get_dev_err(dev, &blk_dev);
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if (ret) {
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if (ret == -ENOENT)
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puts("Not bound to a backing file\n");
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else if (ret == -ENODEV)
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puts("Invalid host device number\n");
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continue;
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}
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struct host_block_dev *host_dev;
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#ifdef CONFIG_BLK
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host_dev = dev_get_platdata(blk_dev->bdev);
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#else
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host_dev = blk_dev->priv;
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#endif
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printf("%12lu %s\n", (unsigned long)blk_dev->lba,
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host_dev->filename);
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}
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return 0;
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}
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static int do_host_dev(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int dev;
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char *ep;
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struct blk_desc *blk_dev;
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int ret;
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if (argc < 1 || argc > 3)
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return CMD_RET_USAGE;
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if (argc == 1) {
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if (host_curr_device < 0) {
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printf("No current host device\n");
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return 1;
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}
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printf("Current host device %d\n", host_curr_device);
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return 0;
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}
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dev = simple_strtoul(argv[1], &ep, 16);
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if (*ep) {
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printf("** Bad device specification %s **\n", argv[2]);
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return CMD_RET_USAGE;
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}
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ret = host_get_dev_err(dev, &blk_dev);
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if (ret) {
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if (ret == -ENOENT)
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puts("Not bound to a backing file\n");
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else if (ret == -ENODEV)
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puts("Invalid host device number\n");
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return 1;
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}
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host_curr_device = dev;
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return 0;
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}
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static struct cmd_tbl cmd_host_sub[] = {
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U_BOOT_CMD_MKENT(load, 7, 0, do_host_load, "", ""),
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U_BOOT_CMD_MKENT(ls, 3, 0, do_host_ls, "", ""),
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U_BOOT_CMD_MKENT(save, 6, 0, do_host_save, "", ""),
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U_BOOT_CMD_MKENT(size, 3, 0, do_host_size, "", ""),
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U_BOOT_CMD_MKENT(bind, 3, 0, do_host_bind, "", ""),
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U_BOOT_CMD_MKENT(info, 3, 0, do_host_info, "", ""),
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U_BOOT_CMD_MKENT(dev, 0, 1, do_host_dev, "", ""),
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};
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static int do_host(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct cmd_tbl *c;
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/* Skip past 'host' */
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argc--;
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argv++;
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c = find_cmd_tbl(argv[0], cmd_host_sub,
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ARRAY_SIZE(cmd_host_sub));
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if (c)
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return c->cmd(cmdtp, flag, argc, argv);
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else
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return CMD_RET_USAGE;
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}
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U_BOOT_CMD(
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host, 8, 1, do_host,
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"Miscellaneous host commands",
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"load hostfs - <addr> <filename> [<bytes> <offset>] - "
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"load a file from host\n"
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"host ls hostfs - <filename> - list files on host\n"
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"host save hostfs - <addr> <filename> <bytes> [<offset>] - "
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"save a file to host\n"
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"host size hostfs - <filename> - determine size of file on host\n"
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"host bind <dev> [<filename>] - bind \"host\" device to file\n"
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"host info [<dev>] - show device binding & info\n"
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"host dev [<dev>] - Set or retrieve the current host device\n"
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"host commands use the \"hostfs\" device. The \"host\" device is used\n"
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"with standard IO commands such as fatls or ext2load"
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);
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