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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2022
* Roger Knecht <rknecht@pm.de>
*/
#include <common.h>
#include <command.h>
#include <fs.h>
#include <malloc.h>
#include <mapmem.h>
static int do_cat(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char *ifname;
char *dev;
char *file;
char *buffer;
phys_addr_t addr;
loff_t file_size;
if (argc < 4)
return CMD_RET_USAGE;
ifname = argv[1];
dev = argv[2];
file = argv[3];
// check file exists
if (fs_set_blk_dev(ifname, dev, FS_TYPE_ANY))
return CMD_RET_FAILURE;
if (!fs_exists(file)) {
log_err("File does not exist: ifname=%s dev=%s file=%s\n", ifname, dev, file);
return CMD_RET_FAILURE;
}
// get file size
if (fs_set_blk_dev(ifname, dev, FS_TYPE_ANY))
return CMD_RET_FAILURE;
if (fs_size(file, &file_size)) {
log_err("Cannot read file size: ifname=%s dev=%s file=%s\n", ifname, dev, file);
return CMD_RET_FAILURE;
}
// allocate memory for file content
buffer = calloc(sizeof(char), file_size + 1);
if (!buffer) {
log_err("Out of memory\n");
return CMD_RET_FAILURE;
}
// map pointer to system memory
addr = map_to_sysmem(buffer);
// read file to memory
if (fs_set_blk_dev(ifname, dev, FS_TYPE_ANY))
return CMD_RET_FAILURE;
if (fs_read(file, addr, 0, 0, &file_size)) {
log_err("Cannot read file: ifname=%s dev=%s file=%s\n", ifname, dev, file);
return CMD_RET_FAILURE;
}
// print file content
buffer[file_size] = '\0';
puts(buffer);
free(buffer);
return 0;
}
#ifdef CONFIG_SYS_LONGHELP
static char cat_help_text[] =
"<interface> <dev[:part]> <file>\n"
" - Print file from 'dev' on 'interface' to standard output\n";
#endif
U_BOOT_CMD(cat, 4, 1, do_cat,
"Print file to standard output",
cat_help_text
);
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