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This change retains "or later" state! No licensing _changes_ here, only form is adjusted (article, space between "GPL" and "v2" and so on). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
152 lines
3.7 KiB
C
152 lines
3.7 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* busybox reimplementation of flashcp
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*
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* (C) 2009 Stefan Seyfried <seife@sphairon.com>
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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#include "libbb.h"
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#include <mtd/mtd-user.h>
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#define MTD_DEBUG 0
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#define OPT_v (1 << 0)
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#define BUFSIZE (8 * 1024)
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static void progress(int mode, uoff_t count, uoff_t total)
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{
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uoff_t percent;
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if (!option_mask32) //if (!(option_mask32 & OPT_v))
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return;
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percent = count * 100;
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if (total)
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percent = (unsigned) (percent / total);
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printf("\r%s: %"OFF_FMT"u/%"OFF_FMT"u (%u%%) ",
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(mode == 0) ? "Erasing block" : ((mode == 1) ? "Writing kb" : "Verifying kb"),
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count, total, (unsigned)percent);
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fflush_all();
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}
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static void progress_newline(void)
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{
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if (!option_mask32) //if (!(option_mask32 & OPT_v))
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return;
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bb_putchar('\n');
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}
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int flashcp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int flashcp_main(int argc UNUSED_PARAM, char **argv)
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{
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int fd_f, fd_d; /* input file and mtd device file descriptors */
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int i;
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uoff_t erase_count;
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unsigned opts;
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struct mtd_info_user mtd;
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struct erase_info_user e;
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struct stat statb;
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// const char *filename, *devicename;
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RESERVE_CONFIG_UBUFFER(buf, BUFSIZE);
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RESERVE_CONFIG_UBUFFER(buf2, BUFSIZE);
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opt_complementary = "=2"; /* exactly 2 non-option args: file, dev */
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opts = getopt32(argv, "v");
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argv += optind;
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// filename = *argv++;
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// devicename = *argv;
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#define filename argv[0]
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#define devicename argv[1]
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/* open input file and mtd device and do sanity checks */
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fd_f = xopen(filename, O_RDONLY);
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fstat(fd_f, &statb);
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fd_d = xopen(devicename, O_SYNC | O_RDWR);
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#if !MTD_DEBUG
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if (ioctl(fd_d, MEMGETINFO, &mtd) < 0) {
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bb_error_msg_and_die("%s is not a MTD flash device", devicename);
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}
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if (statb.st_size > mtd.size) {
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bb_error_msg_and_die("%s bigger than %s", filename, devicename);
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}
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#else
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mtd.erasesize = 64 * 1024;
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#endif
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/* always erase a complete block */
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erase_count = (uoff_t)(statb.st_size + mtd.erasesize - 1) / mtd.erasesize;
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/* erase 1 block at a time to be able to give verbose output */
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e.length = mtd.erasesize;
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#if 0
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/* (1) bloat
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* (2) will it work for multi-gigabyte devices?
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* (3) worse wrt error detection granularity
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*/
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/* optimization: if not verbose, erase in one go */
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if (!opts) { // if (!(opts & OPT_v))
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e.length = mtd.erasesize * erase_count;
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erase_count = 1;
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}
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#endif
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e.start = 0;
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for (i = 1; i <= erase_count; i++) {
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progress(0, i, erase_count);
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errno = 0;
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#if !MTD_DEBUG
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if (ioctl(fd_d, MEMERASE, &e) < 0) {
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bb_perror_msg_and_die("erase error at 0x%llx on %s",
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(long long)e.start, devicename);
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}
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#else
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usleep(100*1000);
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#endif
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e.start += mtd.erasesize;
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}
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progress_newline();
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/* doing this outer loop gives significantly smaller code
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* than doing two separate loops for writing and verifying */
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for (i = 1; i <= 2; i++) {
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uoff_t done;
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unsigned count;
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xlseek(fd_f, 0, SEEK_SET);
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xlseek(fd_d, 0, SEEK_SET);
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done = 0;
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count = BUFSIZE;
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while (1) {
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uoff_t rem = statb.st_size - done;
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if (rem == 0)
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break;
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if (rem < BUFSIZE)
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count = rem;
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progress(i, done / 1024, (uoff_t)statb.st_size / 1024);
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xread(fd_f, buf, count);
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if (i == 1) {
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int ret;
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errno = 0;
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ret = full_write(fd_d, buf, count);
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if (ret != count) {
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bb_perror_msg_and_die("write error at 0x%"OFF_FMT"x on %s, "
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"write returned %d",
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done, devicename, ret);
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}
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} else { /* i == 2 */
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xread(fd_d, buf2, count);
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if (memcmp(buf, buf2, count)) {
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bb_error_msg_and_die("verification mismatch at 0x%"OFF_FMT"x", done);
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}
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}
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done += count;
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}
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progress_newline();
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}
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/* we won't come here if there was an error */
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return EXIT_SUCCESS;
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}
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