u-boot/cmd/zfs.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

170 lines
3.6 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
*
* ZFS filesystem porting to Uboot by
* Jorgen Lundman <lundman at lundman.net>
*
* zfsfs support
* made from existing GRUB Sources by Sun, GNU and others.
*/
#include <common.h>
#include <part.h>
#include <config.h>
#include <command.h>
#include <image.h>
#include <linux/ctype.h>
#include <asm/byteorder.h>
#include <zfs_common.h>
#include <linux/stat.h>
#include <malloc.h>
#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
#include <usb.h>
#endif
#if !CONFIG_IS_ENABLED(DOS_PARTITION) && !CONFIG_IS_ENABLED(EFI_PARTITION)
#error DOS or EFI partition support must be selected
#endif
#define DOS_PART_MAGIC_OFFSET 0x1fe
#define DOS_FS_TYPE_OFFSET 0x36
#define DOS_FS32_TYPE_OFFSET 0x52
static int do_zfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *filename = NULL;
int dev;
int part;
ulong addr = 0;
disk_partition_t info;
struct blk_desc *dev_desc;
char buf[12];
unsigned long count;
const char *addr_str;
struct zfs_file zfile;
struct device_s vdev;
if (argc < 3)
return CMD_RET_USAGE;
count = 0;
addr = simple_strtoul(argv[3], NULL, 16);
filename = env_get("bootfile");
switch (argc) {
case 3:
addr_str = env_get("loadaddr");
if (addr_str != NULL)
addr = simple_strtoul(addr_str, NULL, 16);
else
addr = CONFIG_SYS_LOAD_ADDR;
break;
case 4:
break;
case 5:
filename = argv[4];
break;
case 6:
filename = argv[4];
count = simple_strtoul(argv[5], NULL, 16);
break;
default:
return cmd_usage(cmdtp);
}
if (!filename) {
puts("** No boot file defined **\n");
return 1;
}
part = blk_get_device_part_str(argv[1], argv[2], &dev_desc, &info, 1);
if (part < 0)
return 1;
dev = dev_desc->devnum;
printf("Loading file \"%s\" from %s device %d%c%c\n",
filename, argv[1], dev,
part ? ':' : ' ', part ? part + '0' : ' ');
zfs_set_blk_dev(dev_desc, &info);
vdev.part_length = info.size;
memset(&zfile, 0, sizeof(zfile));
zfile.device = &vdev;
if (zfs_open(&zfile, filename)) {
printf("** File not found %s **\n", filename);
return 1;
}
if ((count < zfile.size) && (count != 0))
zfile.size = (uint64_t)count;
if (zfs_read(&zfile, (char *)addr, zfile.size) != zfile.size) {
printf("** Unable to read \"%s\" from %s %d:%d **\n",
filename, argv[1], dev, part);
zfs_close(&zfile);
return 1;
}
zfs_close(&zfile);
/* Loading ok, update default load address */
load_addr = addr;
printf("%llu bytes read\n", zfile.size);
env_set_hex("filesize", zfile.size);
return 0;
}
int zfs_print(const char *entry, const struct zfs_dirhook_info *data)
{
printf("%s %s\n",
data->dir ? "<DIR> " : " ",
entry);
return 0; /* 0 continue, 1 stop */
}
static int do_zfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
const char *filename = "/";
int part;
struct blk_desc *dev_desc;
disk_partition_t info;
struct device_s vdev;
if (argc < 2)
return cmd_usage(cmdtp);
if (argc == 4)
filename = argv[3];
part = blk_get_device_part_str(argv[1], argv[2], &dev_desc, &info, 1);
if (part < 0)
return 1;
zfs_set_blk_dev(dev_desc, &info);
vdev.part_length = info.size;
zfs_ls(&vdev, filename,
zfs_print);
return 0;
}
U_BOOT_CMD(zfsls, 4, 1, do_zfs_ls,
"list files in a directory (default /)",
"<interface> <dev[:part]> [directory]\n"
" - list files from 'dev' on 'interface' in a '/DATASET/@/$dir/'");
U_BOOT_CMD(zfsload, 6, 0, do_zfs_load,
"load binary file from a ZFS filesystem",
"<interface> <dev[:part]> [addr] [filename] [bytes]\n"
" - load binary file '/DATASET/@/$dir/$file' from 'dev' on 'interface'\n"
" to address 'addr' from ZFS filesystem");