summaryrefslogtreecommitdiffstats
path: root/cmd/part.c
blob: 55995097eb00c8d1a12f03a621d2d29082b58b37 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
/*
 * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
 *
 * made from cmd_ext2, which was:
 *
 * (C) Copyright 2004
 * esd gmbh <www.esd-electronics.com>
 * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
 *
 * made from cmd_reiserfs by
 *
 * (C) Copyright 2003 - 2004
 * Sysgo Real-Time Solutions, AG <www.elinos.com>
 * Pavel Bartusek <pba@sysgo.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <config.h>
#include <command.h>
#include <part.h>
#include <vsprintf.h>

#ifndef CONFIG_PARTITION_UUIDS
#error CONFIG_PARTITION_UUIDS must be enabled for CONFIG_CMD_PART to be enabled
#endif

static int do_part_uuid(int argc, char * const argv[])
{
	int part;
	block_dev_desc_t *dev_desc;
	disk_partition_t info;

	if (argc < 2)
		return CMD_RET_USAGE;
	if (argc > 3)
		return CMD_RET_USAGE;

	part = get_device_and_partition(argv[0], argv[1], &dev_desc, &info, 0);
	if (part < 0)
		return 1;

	if (argc > 2)
		setenv(argv[2], info.uuid);
	else
		printf("%s\n", info.uuid);

	return 0;
}

static int do_part_list(int argc, char * const argv[])
{
	int ret;
	block_dev_desc_t *desc;
	char *var = NULL;
	bool bootable = false;
	int i;

	if (argc < 2)
		return CMD_RET_USAGE;

	if (argc > 2) {
		for (i = 2; i < argc ; i++) {
			if (argv[i][0] == '-') {
				if (!strcmp(argv[i], "-bootable")) {
					bootable = true;
				} else {
					printf("Unknown option %s\n", argv[i]);
					return CMD_RET_USAGE;
				}
			} else {
				var = argv[i];
				break;
			}
		}

		/* Loops should have been exited at the last argument, which
		 * as it contained the variable */
		if (argc != i + 1)
			return CMD_RET_USAGE;
	}

	ret = get_device(argv[0], argv[1], &desc);
	if (ret < 0)
		return 1;

	if (var != NULL) {
		int p;
		char str[512] = { '\0', };
		disk_partition_t info;

		for (p = 1; p < 128; p++) {
			char t[5];
			int r = get_partition_info(desc, p, &info);

			if (r != 0)
				continue;

			if (bootable && !info.bootable)
				continue;

			sprintf(t, "%s%x", str[0] ? " " : "", p);
			strcat(str, t);
		}
		setenv(var, str);
		return 0;
	}

	print_part(desc);

	return 0;
}

static int do_part_start(int argc, char * const argv[])
{
	block_dev_desc_t *desc;
	disk_partition_t info;
	char buf[512] = { 0 };
	int part;
	int err;
	int ret;

	if (argc < 3)
		return CMD_RET_USAGE;
	if (argc > 4)
		return CMD_RET_USAGE;

	part = simple_strtoul(argv[2], NULL, 0);

	ret = get_device(argv[0], argv[1], &desc);
	if (ret < 0)
		return 1;

	err = get_partition_info(desc, part, &info);
	if (err)
		return 1;

	snprintf(buf, sizeof(buf), LBAF, info.start);

	if (argc > 3)
		setenv(argv[3], buf);
	else
		printf("%s\n", buf);

	return 0;
}

static int do_part_size(int argc, char * const argv[])
{
	block_dev_desc_t *desc;
	disk_partition_t info;
	char buf[512] = { 0 };
	int part;
	int err;
	int ret;

	if (argc < 3)
		return CMD_RET_USAGE;
	if (argc > 4)
		return CMD_RET_USAGE;

	part = simple_strtoul(argv[2], NULL, 0);

	ret = get_device(argv[0], argv[1], &desc);
	if (ret < 0)
		return 1;

	err = get_partition_info(desc, part, &info);
	if (err)
		return 1;

	snprintf(buf, sizeof(buf), LBAF, info.size);

	if (argc > 3)
		setenv(argv[3], buf);
	else
		printf("%s\n", buf);

	return 0;
}

static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	if (argc < 2)
		return CMD_RET_USAGE;

	if (!strcmp(argv[1], "uuid"))
		return do_part_uuid(argc - 2, argv + 2);
	else if (!strcmp(argv[1], "list"))
		return do_part_list(argc - 2, argv + 2);
	else if (!strcmp(argv[1], "start"))
		return do_part_start(argc - 2, argv + 2);
	else if (!strcmp(argv[1], "size"))
		return do_part_size(argc - 2, argv + 2);

	return CMD_RET_USAGE;
}

U_BOOT_CMD(
	part,	CONFIG_SYS_MAXARGS,	1,	do_part,
	"disk partition related commands",
	"uuid <interface> <dev>:<part>\n"
	"    - print partition UUID\n"
	"part uuid <interface> <dev>:<part> <varname>\n"
	"    - set environment variable to partition UUID\n"
	"part list <interface> <dev>\n"
	"    - print a device's partition table\n"
	"part list <interface> <dev> [flags] <varname>\n"
	"    - set environment variable to the list of partitions\n"
	"      flags can be -bootable (list only bootable partitions)\n"
	"part start <interface> <dev> <part> <varname>\n"
	"    - set environment variable to the start of the partition (in blocks)\n"
	"part size <interface> <dev> <part> <varname>\n"
	"    - set environment variable to the size of the partition (in blocks)"
);
OpenPOWER on IntegriCloud