/* 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 source tree. */ #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; }