lib/fs/debug.c

/*
 * Copyright (c) 2009 Travis Geiselbrecht
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include <debug.h>
#include <string.h>
#include <lib/console.h>
#include <lib/fs.h>
#include <stdlib.h>
#include <platform.h>

#if defined(WITH_LIB_CONSOLE)

#if DEBUGLEVEL > 1
static int cmd_fs(int argc, const cmd_args *argv);

STATIC_COMMAND_START
STATIC_COMMAND("fs", "fs debug commands", &cmd_fs)
STATIC_COMMAND_END(fs);

extern int fs_mount_type(const char *path, const char *device, const char *name);
extern int fs_create_file(const char *path, filecookie *fcookie);
extern int fs_make_dir(const char *path);
extern int fs_write_file(filecookie fcookie, const void *buf, off_t offset, size_t len);

static int cmd_fs(int argc, const cmd_args *argv)
{
	int rc = 0;

	if (argc < 2) {
notenoughargs:
		printf("not enough arguments:\n");
usage:
		printf("%s mount <path> <device> [<type>]\n", argv[0].str);
		printf("%s unmount <path>\n", argv[0].str);
		printf("%s create <path>\n", argv[0].str);
		printf("%s mkdir <path>\n", argv[0].str);
		printf("%s read <path> [<offset>] [<len>]\n", argv[0].str);
		printf("%s write <path> <string> [<offset>]\n", argv[0].str);
		printf("%s stat <file>\n", argv[0].str);
		return -1;
	}

	if (!strcmp(argv[1].str, "mount")) {
		int err;

		if (argc < 4)
			goto notenoughargs;

		if (argc < 5)
			err = fs_mount(argv[2].str, argv[3].str);

		else
			err = fs_mount_type(argv[2].str, argv[3].str, argv[4].str);

		if (err < 0) {
			printf("error %d mounting device\n", err);
			return err;
		}
	} else if (!strcmp(argv[1].str, "unmount")) {
		int err;

		if (argc < 3)
			goto notenoughargs;

		err = fs_unmount(argv[2].str);
		if (err < 0) {
			printf("error %d unmounting device\n", err);
			return err;
		}
	} else if (!strcmp(argv[1].str, "create")) {
		int err;
		filecookie cookie;

		if (argc < 3)
			goto notenoughargs;

		err = fs_create_file(argv[2].str, &cookie);
		if (err < 0) {
			printf("error %d creating file\n", err);
			return err;
		}

		fs_close_file(cookie);
	} else if (!strcmp(argv[1].str, "mkdir")) {
		int err;

		if (argc < 3)
			goto notenoughargs;

		err = fs_make_dir(argv[2].str);
		if (err < 0) {
			printf("error %d making directory\n", err);
			return err;
		}
	} else if (!strcmp(argv[1].str, "read")) {
		int err;
		char *buf;
		off_t off;
		size_t len;
		filecookie cookie;
		struct file_stat stat;

		if (argc < 3)
			goto notenoughargs;

		err = fs_open_file(argv[2].str, &cookie);
		if (err < 0) {
			printf("error %d opening file\n", err);
			return err;
		}

		err = fs_stat_file(cookie, &stat);
		if (err < 0) {
			printf("error %d stat'ing file\n", err);
			fs_close_file(cookie);
			return err;
		}

		if (argc < 4)
			off = 0;

		else
			off = argv[3].u;

		if (argc < 5)
			len = stat.size - off;

		else
			len = argv[4].u;

		buf = malloc(len + 1);

		err = fs_read_file(cookie, buf, off, len);
		if (err < 0) {
			printf("error %d reading file\n", err);
			free(buf);
			fs_close_file(cookie);
			return err;
		}

		buf[len] = '\0';
		printf("%s\n", buf);
		free(buf);
		fs_close_file(cookie);
	} else if (!strcmp(argv[1].str, "write")) {
		int err;
		off_t off;
		filecookie cookie;
		struct file_stat stat;

		if (argc < 3)
			goto notenoughargs;

		err = fs_open_file(argv[2].str, &cookie);
		if (err < 0) {
			printf("error %d opening file\n", err);
			return err;
		}

		err = fs_stat_file(cookie, &stat);
		if (err < 0) {
			printf("error %d stat'ing file\n", err);
			fs_close_file(cookie);
			return err;
		}

		if (argc < 5)
			off = stat.size;

		else
			off = argv[4].u;

		err = fs_write_file(cookie, argv[3].str, off, strlen(argv[3].str));
		if (err < 0) {
			printf("error %d writing file\n", err);
			fs_close_file(cookie);
			return err;
		}

		fs_close_file(cookie);
	} else if (!strcmp(argv[1].str, "stat")) {
		int err;
		struct file_stat stat;
		filecookie cookie;

		if (argc < 3)
			goto notenoughargs;

		err = fs_open_file(argv[2].str, &cookie);
		if (err < 0) {
			printf("error %d opening file\n", err);
			return err;
		}

		err = fs_stat_file(cookie, &stat);
		if (err < 0) {
			printf("error %d statting file\n", err);
			fs_close_file(cookie);
			return err;
		}

		printf("stat successful:\n");		
		printf("\tis_dir: %d\n", stat.is_dir ? 1 : 0);
		printf("\tsize: %lld\n", stat.size);

		fs_close_file(cookie);
	} else {
		printf("unrecognized subcommand\n");
		goto usage;
	}

	return rc;
}

#endif

#endif