busybox/miscutils/flashcp.c

/* vi: set sw=4 ts=4: */
/*
 * busybox reimplementation of flashcp
 *
 * (C) 2009 Stefan Seyfried <seife@sphairon.com>
 *
 * Licensed under GPLv2, see file LICENSE in this tarball for details.
 */

#include "libbb.h"
#include <mtd/mtd-user.h>

#define MTD_DEBUG 0

#define OPT_v (1 << 0)

#define BUFSIZE (8 * 1024)

static void progress(int mode, uoff_t count, uoff_t total)
{
	uoff_t percent;

	if (!option_mask32) //if (!(option_mask32 & OPT_v))
		return;
	percent = count * 100;
	if (total)
		percent = (unsigned) (percent / total);
	printf("\r%s: %"OFF_FMT"u/%"OFF_FMT"u (%u%%) ",
		(mode == 0) ? "Erasing block" : ((mode == 1) ? "Writing kb" : "Verifying kb"),
		count, total, (unsigned)percent);
	fflush_all();
}

static void progress_newline(void)
{
	if (!option_mask32) //if (!(option_mask32 & OPT_v))
		return;
	bb_putchar('\n');
}

int flashcp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int flashcp_main(int argc UNUSED_PARAM, char **argv)
{
	int fd_f, fd_d; /* input file and mtd device file descriptors */
	int i;
	uoff_t erase_count;
	unsigned opts;
	struct mtd_info_user mtd;
	struct erase_info_user e;
	struct stat statb;
//	const char *filename, *devicename;
	RESERVE_CONFIG_UBUFFER(buf, BUFSIZE);
	RESERVE_CONFIG_UBUFFER(buf2, BUFSIZE);

	opt_complementary = "=2"; /* exactly 2 non-option args: file, dev */
	opts = getopt32(argv, "v");
	argv += optind;
//	filename = *argv++;
//	devicename = *argv;
#define filename argv[0]
#define devicename argv[1]

	/* open input file and mtd device and do sanity checks */
	fd_f = xopen(filename, O_RDONLY);
	fstat(fd_f, &statb);
	fd_d = xopen(devicename, O_SYNC | O_RDWR);
#if !MTD_DEBUG
	if (ioctl(fd_d, MEMGETINFO, &mtd) < 0) {
		bb_error_msg_and_die("%s is not a MTD flash device", devicename);
	}
	if (statb.st_size > mtd.size) {
		bb_error_msg_and_die("%s bigger than %s", filename, devicename);
	}
#else
	mtd.erasesize = 64 * 1024;
#endif

	/* always erase a complete block */
	erase_count = (uoff_t)(statb.st_size + mtd.erasesize - 1) / mtd.erasesize;
	/* erase 1 block at a time to be able to give verbose output */
	e.length = mtd.erasesize;
#if 0
/* (1) bloat
 * (2) will it work for multi-gigabyte devices?
 * (3) worse wrt error detection granularity
 */
	/* optimization: if not verbose, erase in one go */
	if (!opts) { // if (!(opts & OPT_v))
		e.length = mtd.erasesize * erase_count;
		erase_count = 1;
	}
#endif
	e.start = 0;
	for (i = 1; i <= erase_count; i++) {
		progress(0, i, erase_count);
		errno = 0;
#if !MTD_DEBUG
		if (ioctl(fd_d, MEMERASE, &e) < 0) {
			bb_perror_msg_and_die("erase error at 0x%llx on %s",
				(long long)e.start, devicename);
		}
#else
		usleep(100*1000);
#endif
		e.start += mtd.erasesize;
	}
	progress_newline();

	/* doing this outer loop gives significantly smaller code
	 * than doing two separate loops for writing and verifying */
	for (i = 1; i <= 2; i++) {
		uoff_t done;
		unsigned count;

		xlseek(fd_f, 0, SEEK_SET);
		xlseek(fd_d, 0, SEEK_SET);
		done = 0;
		count = BUFSIZE;
		while (1) {
			uoff_t rem = statb.st_size - done;
			if (rem == 0)
				break;
			if (rem < BUFSIZE)
				count = rem;
			progress(i, done / 1024, (uoff_t)statb.st_size / 1024);
			xread(fd_f, buf, count);
			if (i == 1) {
				int ret;
				errno = 0;
				ret = full_write(fd_d, buf, count);
				if (ret != count) {
					bb_perror_msg_and_die("write error at 0x%"OFF_FMT"x on %s, "
						"write returned %d",
						done, devicename, ret);
				}
			} else { /* i == 2 */
				xread(fd_d, buf2, count);
				if (memcmp(buf, buf2, count)) {
					bb_error_msg_and_die("verification mismatch at 0x%"OFF_FMT"x", done);
				}
			}

			done += count;
		}

		progress_newline();
	}
	/* we won't come here if there was an error */

	return EXIT_SUCCESS;
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* busybox reimplementation of flashcp
4	*
5	* (C) 2009 Stefan Seyfried <seife@sphairon.com>
6	*
7	* Licensed under GPLv2, see file LICENSE in this tarball for details.
8	*/
9
10	#include "libbb.h"
11	#include <mtd/mtd-user.h>
12
13	#define MTD_DEBUG 0
14
15	#define OPT_v (1 << 0)
16
17	#define BUFSIZE (8 * 1024)
18
19	static void progress(int mode, uoff_t count, uoff_t total)
20	{
21	uoff_t percent;
22
23	if (!option_mask32) //if (!(option_mask32 & OPT_v))
24	return;
25	percent = count * 100;
26	if (total)
27	percent = (unsigned) (percent / total);
28	printf("\r%s: %"OFF_FMT"u/%"OFF_FMT"u (%u%%) ",
29	(mode == 0) ? "Erasing block" : ((mode == 1) ? "Writing kb" : "Verifying kb"),
30	count, total, (unsigned)percent);
31	fflush_all();
32	}
33
34	static void progress_newline(void)
35	{
36	if (!option_mask32) //if (!(option_mask32 & OPT_v))
37	return;
38	bb_putchar('\n');
39	}
40
41	int flashcp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
42	int flashcp_main(int argc UNUSED_PARAM, char **argv)
43	{
44	int fd_f, fd_d; /* input file and mtd device file descriptors */
45	int i;
46	uoff_t erase_count;
47	unsigned opts;
48	struct mtd_info_user mtd;
49	struct erase_info_user e;
50	struct stat statb;
51	// const char filename, devicename;
52	RESERVE_CONFIG_UBUFFER(buf, BUFSIZE);
53	RESERVE_CONFIG_UBUFFER(buf2, BUFSIZE);
54
55	opt_complementary = "=2"; /* exactly 2 non-option args: file, dev */
56	opts = getopt32(argv, "v");
57	argv += optind;
58	// filename = *argv++;
59	// devicename = *argv;
60	#define filename argv[0]
61	#define devicename argv[1]
62
63	/* open input file and mtd device and do sanity checks */
64	fd_f = xopen(filename, O_RDONLY);
65	fstat(fd_f, &statb);
66	fd_d = xopen(devicename, O_SYNC \| O_RDWR);
67	#if !MTD_DEBUG
68	if (ioctl(fd_d, MEMGETINFO, &mtd) < 0) {
69	bb_error_msg_and_die("%s is not a MTD flash device", devicename);
70	}
71	if (statb.st_size > mtd.size) {
72	bb_error_msg_and_die("%s bigger than %s", filename, devicename);
73	}
74	#else
75	mtd.erasesize = 64 * 1024;
76	#endif
77
78	/* always erase a complete block */
79	erase_count = (uoff_t)(statb.st_size + mtd.erasesize - 1) / mtd.erasesize;
80	/* erase 1 block at a time to be able to give verbose output */
81	e.length = mtd.erasesize;
82	#if 0
83	/* (1) bloat
84	* (2) will it work for multi-gigabyte devices?
85	* (3) worse wrt error detection granularity
86	*/
87	/* optimization: if not verbose, erase in one go */
88	if (!opts) { // if (!(opts & OPT_v))
89	e.length = mtd.erasesize * erase_count;
90	erase_count = 1;
91	}
92	#endif
93	e.start = 0;
94	for (i = 1; i <= erase_count; i++) {
95	progress(0, i, erase_count);
96	errno = 0;
97	#if !MTD_DEBUG
98	if (ioctl(fd_d, MEMERASE, &e) < 0) {
99	bb_perror_msg_and_die("erase error at 0x%llx on %s",
100	(long long)e.start, devicename);
101	}
102	#else
103	usleep(100*1000);
104	#endif
105	e.start += mtd.erasesize;
106	}
107	progress_newline();
108
109	/* doing this outer loop gives significantly smaller code
110	* than doing two separate loops for writing and verifying */
111	for (i = 1; i <= 2; i++) {
112	uoff_t done;
113	unsigned count;
114
115	xlseek(fd_f, 0, SEEK_SET);
116	xlseek(fd_d, 0, SEEK_SET);
117	done = 0;
118	count = BUFSIZE;
119	while (1) {
120	uoff_t rem = statb.st_size - done;
121	if (rem == 0)
122	break;
123	if (rem < BUFSIZE)
124	count = rem;
125	progress(i, done / 1024, (uoff_t)statb.st_size / 1024);
126	xread(fd_f, buf, count);
127	if (i == 1) {
128	int ret;
129	errno = 0;
130	ret = full_write(fd_d, buf, count);
131	if (ret != count) {
132	bb_perror_msg_and_die("write error at 0x%"OFF_FMT"x on %s, "
133	"write returned %d",
134	done, devicename, ret);
135	}
136	} else { /* i == 2 */
137	xread(fd_d, buf2, count);
138	if (memcmp(buf, buf2, count)) {
139	bb_error_msg_and_die("verification mismatch at 0x%"OFF_FMT"x", done);
140	}
141	}
142
143	done += count;
144	}
145
146	progress_newline();
147	}
148	/* we won't come here if there was an error */
149
150	return EXIT_SUCCESS;
151	}