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	niro	984	/* 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			}