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

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

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