[u-boot.git] / cmd / cat.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2022
 * Roger Knecht <[email protected]>
 */

#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;
	ulong file_size;
	int ret;

	if (argc < 4)
		return CMD_RET_USAGE;

	ifname = argv[1];
	dev = argv[2];
	file = argv[3];

	ret = fs_load_alloc(ifname, dev, file, 0, 0, (void **)&buffer,
			    &file_size);

	// check file exists
	switch (ret) {
	case 0:
		break;
	case -ENOMEDIUM:
		return CMD_RET_FAILURE;
	case -ENOENT:
		log_err("File does not exist: ifname=%s dev=%s file=%s\n", ifname, dev, file);
		return CMD_RET_FAILURE;
	case -E2BIG:
		log_err("File is too large: ifname=%s dev=%s file=%s\n", ifname, dev, file);
		return CMD_RET_FAILURE;
	case -ENOMEM:
		log_err("Not enough memory: ifname=%s dev=%s file=%s\n", ifname, dev, file);
		return CMD_RET_FAILURE;
	default:
	case -EIO:
		log_err("File-read failed: 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;
}

U_BOOT_LONGHELP(cat,
	"<interface> <dev[:part]> <file>\n"
	"  - Print file from 'dev' on 'interface' to standard output\n");

U_BOOT_CMD(cat, 4, 1, do_cat,
	   "Print file to standard output",
	   cat_help_text
);
Commit	Line	Data
690a1d69 RK	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Copyright 2022
	4	* Roger Knecht <[email protected]>
	5	*/
	6
d678a59d	7	#include <common.h>
690a1d69 RK	8	#include <command.h>
	9	#include <fs.h>
	10	#include <malloc.h>
	11	#include <mapmem.h>
	12
	13	static int do_cat(struct cmd_tbl *cmdtp, int flag, int argc,
	14	char *const argv[])
	15	{
	16	char *ifname;
	17	char *dev;
	18	char *file;
	19	char *buffer;
822f7a45 SG	20	ulong file_size;
822f7a45 SG	21	int ret;
690a1d69 RK	22
	23	if (argc < 4)
	24	return CMD_RET_USAGE;
	25
	26	ifname = argv[1];
	27	dev = argv[2];
	28	file = argv[3];
	29
822f7a45 SG	30	ret = fs_load_alloc(ifname, dev, file, 0, 0, (void **)&buffer,
	31	&file_size);
	32
690a1d69	33	// check file exists
822f7a45 SG	34	switch (ret) {
	35	case 0:
	36	break;
	37	case -ENOMEDIUM:
690a1d69	38	return CMD_RET_FAILURE;
822f7a45	39	case -ENOENT:
690a1d69 RK	40	log_err("File does not exist: ifname=%s dev=%s file=%s\n", ifname, dev, file);
690a1d69 RK	41	return CMD_RET_FAILURE;
822f7a45 SG	42	case -E2BIG:
822f7a45 SG	43	log_err("File is too large: ifname=%s dev=%s file=%s\n", ifname, dev, file);
690a1d69	44	return CMD_RET_FAILURE;
822f7a45 SG	45	case -ENOMEM:
822f7a45 SG	46	log_err("Not enough memory: ifname=%s dev=%s file=%s\n", ifname, dev, file);
690a1d69	47	return CMD_RET_FAILURE;
822f7a45 SG	48	default:
	49	case -EIO:
	50	log_err("File-read failed: ifname=%s dev=%s file=%s\n", ifname, dev, file);
690a1d69 RK	51	return CMD_RET_FAILURE;
	52	}
	53
	54	// print file content
	55	buffer[file_size] = '\0';
	56	puts(buffer);
	57
	58	free(buffer);
	59
	60	return 0;
	61	}
	62
3616218b	63	U_BOOT_LONGHELP(cat,
690a1d69	64	"<interface> <dev[:part]> <file>\n"
3616218b	65	" - Print file from 'dev' on 'interface' to standard output\n");
690a1d69 RK	66
	67	U_BOOT_CMD(cat, 4, 1, do_cat,
	68	"Print file to standard output",
	69	cat_help_text
	70	);