From c52dd373c6aae88a4640981f5746e7f727367d15 Mon Sep 17 00:00:00 2001 From: nbd Date: Mon, 20 Aug 2007 16:12:24 +0000 Subject: cleanup mtd, implement jffs2write - one step closer to config preserving system upgrades git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8444 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- package/mtd/src/mtd.c | 295 +++++++++++++++++++++++++++++--------------------- 1 file changed, 171 insertions(+), 124 deletions(-) (limited to 'package/mtd/src/mtd.c') diff --git a/package/mtd/src/mtd.c b/package/mtd/src/mtd.c index 85b069f81..92018c23c 100644 --- a/package/mtd/src/mtd.c +++ b/package/mtd/src/mtd.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -43,7 +44,7 @@ #include #include -#include "mtd.h" +#include "mtd-api.h" #define TRX_MAGIC 0x30524448 /* "HDR0" */ #define BUFSIZE (16 * 1024) @@ -51,6 +52,8 @@ #define DEBUG +#define JFFS2_DEFAULT_DIR "tmp" + #define SYSTYPE_UNKNOWN 0 #define SYSTYPE_BROADCOM 1 /* to be continued */ @@ -63,16 +66,86 @@ struct trx_header { uint32_t offsets[3]; /* Offsets of partitions from start of header */ }; -char buf[BUFSIZE]; -int buflen; +static char buf[BUFSIZE]; +static char *imagefile; +static int buflen; int quiet; +int mtdsize = 0; +int erasesize = 0; + +int mtd_open(const char *mtd) +{ + FILE *fp; + char dev[PATH_MAX]; + int i; + int ret; + int flags = O_RDWR | O_SYNC; + + if ((fp = fopen("/proc/mtd", "r"))) { + while (fgets(dev, sizeof(dev), fp)) { + if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) { + snprintf(dev, sizeof(dev), "/dev/mtd/%d", i); + if ((ret=open(dev, flags))<0) { + snprintf(dev, sizeof(dev), "/dev/mtd%d", i); + ret=open(dev, flags); + } + fclose(fp); + return ret; + } + } + fclose(fp); + } + + return open(mtd, flags); +} + +int mtd_check_open(const char *mtd) +{ + struct mtd_info_user mtdInfo; + int fd; + + fd = mtd_open(mtd); + if(fd < 0) { + fprintf(stderr, "Could not open mtd device: %s\n", mtd); + return 0; + } + + if(ioctl(fd, MEMGETINFO, &mtdInfo)) { + fprintf(stderr, "Could not get MTD device info from %s\n", mtd); + close(fd); + return 0; + } + mtdsize = mtdInfo.size; + erasesize = mtdInfo.erasesize; + + return fd; +} + +int mtd_erase_block(int fd, int offset) +{ + struct erase_info_user mtdEraseInfo; + + mtdEraseInfo.start = offset; + mtdEraseInfo.length = erasesize; + ioctl(fd, MEMUNLOCK, &mtdEraseInfo); + if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0) { + fprintf(stderr, "Erasing mtd failed.\n"); + exit(1); + } +} + +int mtd_write_buffer(int fd, char *buf, int offset, int length) +{ + lseek(fd, offset, SEEK_SET); + write(fd, buf, length); +} + #ifdef target_brcm -int +static int image_check_brcm(int imagefd, const char *mtd) { struct trx_header *trx = (struct trx_header *) buf; - struct mtd_info_user mtdInfo; int fd; if (strcmp(mtd, "linux") != 0) @@ -94,18 +167,13 @@ image_check_brcm(int imagefd, const char *mtd) } /* check if image fits to mtd device */ - fd = mtd_open(mtd, O_RDWR | O_SYNC); + fd = mtd_check_open(mtd); if(fd < 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - exit(1); - } - - if(mtdInfo.size < trx->len) { + if(mtdsize < trx->len) { fprintf(stderr, "Image too big for partition: %s\n", mtd); close(fd); return 0; @@ -116,7 +184,7 @@ image_check_brcm(int imagefd, const char *mtd) } #endif /* target_brcm */ -int +static int image_check(int imagefd, const char *mtd) { int fd, systype; @@ -129,48 +197,35 @@ image_check(int imagefd, const char *mtd) #endif } -int mtd_check(char *mtd) +static int mtd_check(const char *mtd) { - struct mtd_info_user mtdInfo; int fd; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { - fprintf(stderr, "Could not open mtd device: %s\n", mtd); + fd = mtd_check_open(mtd); + if (!fd) return 0; - } - - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); - return 0; - } close(fd); return 1; } -int +static int mtd_unlock(const char *mtd) { int fd; - struct mtd_info_user mtdInfo; struct erase_info_user mtdLockInfo; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { + fd = mtd_check_open(mtd); + if(fd <= 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); - exit(1); - } + if (quiet < 2) + fprintf(stderr, "Unlocking %s ...\n", mtd); mtdLockInfo.start = 0; - mtdLockInfo.length = mtdInfo.size; + mtdLockInfo.length = mtdsize; if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) { close(fd); return 0; @@ -180,56 +235,26 @@ mtd_unlock(const char *mtd) return 0; } -int -mtd_open(const char *mtd, int flags) -{ - FILE *fp; - char dev[PATH_MAX]; - int i; - int ret; - - if ((fp = fopen("/proc/mtd", "r"))) { - while (fgets(dev, sizeof(dev), fp)) { - if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) { - snprintf(dev, sizeof(dev), "/dev/mtd/%d", i); - if ((ret=open(dev, flags))<0) { - snprintf(dev, sizeof(dev), "/dev/mtd%d", i); - ret=open(dev, flags); - } - fclose(fp); - return ret; - } - } - fclose(fp); - } - - return open(mtd, flags); -} - -int +static int mtd_erase(const char *mtd) { int fd; - struct mtd_info_user mtdInfo; struct erase_info_user mtdEraseInfo; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { - fprintf(stderr, "Could not open mtd device: %s\n", mtd); - exit(1); - } + if (quiet < 2) + fprintf(stderr, "Erasing %s ...\n", mtd); - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); + fd = mtd_check_open(mtd); + if(fd <= 0) { + fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - mtdEraseInfo.length = mtdInfo.erasesize; + mtdEraseInfo.length = erasesize; for (mtdEraseInfo.start = 0; - mtdEraseInfo.start < mtdInfo.size; - mtdEraseInfo.start += mtdInfo.erasesize) { + mtdEraseInfo.start < mtdsize; + mtdEraseInfo.start += erasesize) { ioctl(fd, MEMUNLOCK, &mtdEraseInfo); if(ioctl(fd, MEMERASE, &mtdEraseInfo)) @@ -241,46 +266,50 @@ mtd_erase(const char *mtd) } -int +static int mtd_refresh(const char *mtd) { int fd; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { + if (quiet < 2) + fprintf(stderr, "Refreshing mtd partition %s ... ", mtd); + + fd = mtd_check_open(mtd); + if(fd <= 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } + if (ioctl(fd, MTDREFRESH, NULL)) { fprintf(stderr, "Failed to refresh the MTD device\n"); close(fd); exit(1); } close(fd); + + if (quiet < 2) + fprintf(stderr, "\n"); + return 0; } -int +static int mtd_write(int imagefd, const char *mtd) { int fd, i, result; size_t r, w, e; - struct mtd_info_user mtdInfo; struct erase_info_user mtdEraseInfo; int ret = 0; - fd = mtd_open(mtd, O_RDWR | O_SYNC); + fd = mtd_check_open(mtd); if(fd < 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); - exit(1); - } + if (quiet < 2) + fprintf(stderr, "Writing from %s to %s ... ", imagefile, mtd); + r = w = e = 0; if (!quiet) fprintf(stderr, " [ ]"); @@ -296,17 +325,13 @@ mtd_write(int imagefd, const char *mtd) /* need to erase the next block before writing data to it */ while (w > e) { - mtdEraseInfo.start = e; - mtdEraseInfo.length = mtdInfo.erasesize; - if (!quiet) fprintf(stderr, "\b\b\b[e]"); + + mtd_erase_block(fd, e); + /* erase the chunk */ - if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) { - fprintf(stderr, "Erasing mtd failed: %s\n", mtd); - exit(1); - } - e += mtdInfo.erasesize; + e += erasesize; } if (!quiet) @@ -327,11 +352,14 @@ mtd_write(int imagefd, const char *mtd) if (!quiet) fprintf(stderr, "\b\b\b\b"); + if (quiet < 2) + fprintf(stderr, "\n"); + close(fd); return 0; } -void usage(void) +static void usage(void) { fprintf(stderr, "Usage: mtd [ ...] [ ...] \n\n" "The device is in the format of mtdX (eg: mtd4) or its label.\n" @@ -340,26 +368,44 @@ void usage(void) " refresh refresh mtd partition\n" " erase erase all data on device\n" " write |- write (use - for stdin) to device\n" + " jffs2write append to the jffs2 partition on the device\n" "Following options are available:\n" " -q quiet mode (once: no [w] on writing,\n" " twice: no status messages)\n" " -r reboot after successful command\n" " -f force write without trx checks\n" - " -e erase before executing the command\n\n" + " -e erase before executing the command\n" + " -d directory for jffs2write, defaults to \"tmp\"\n" + "\n" "Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n" " mtd -r write linux.trx linux\n\n"); exit(1); } +static void do_reboot(void) +{ + fprintf(stderr, "Rebooting ...\n"); + fflush(stderr); + + /* try regular reboot method first */ + system("/sbin/reboot"); + sleep(2); + + /* if we're still alive at this point, force the kernel to reboot */ + syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL); +} + int main (int argc, char **argv) { int ch, i, boot, unlock, imagefd, force, unlocked; - char *erase[MAX_ARGS], *device, *imagefile; + char *erase[MAX_ARGS], *device; + char *jffs2dir = JFFS2_DEFAULT_DIR; enum { CMD_ERASE, CMD_WRITE, CMD_UNLOCK, - CMD_REFRESH + CMD_REFRESH, + CMD_JFFS2WRITE } cmd; erase[0] = NULL; @@ -368,7 +414,7 @@ int main (int argc, char **argv) buflen = 0; quiet = 0; - while ((ch = getopt(argc, argv, "frqe:")) != -1) + while ((ch = getopt(argc, argv, "frqe:d:")) != -1) switch (ch) { case 'f': force = 1; @@ -387,7 +433,9 @@ int main (int argc, char **argv) erase[i++] = optarg; erase[i] = NULL; break; - + case 'd': + jffs2dir = optarg; + break; case '?': default: usage(); @@ -434,6 +482,15 @@ int main (int argc, char **argv) exit(1); } } + } else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) { + cmd = CMD_JFFS2WRITE; + device = argv[2]; + + imagefile = argv[1]; + if (!mtd_check(device)) { + fprintf(stderr, "Can't open device for writing!\n"); + exit(1); + } } else { usage(); } @@ -443,53 +500,43 @@ int main (int argc, char **argv) i = 0; unlocked = 0; while (erase[i] != NULL) { - if (quiet < 2) - fprintf(stderr, "Unlocking %s ...\n", erase[i]); mtd_unlock(erase[i]); - if (quiet < 2) - fprintf(stderr, "Erasing %s ...\n", erase[i]); mtd_erase(erase[i]); if (strcmp(erase[i], device) == 0) unlocked = 1; i++; } - if (!unlocked) { - if (quiet < 2) - fprintf(stderr, "Unlocking %s ...\n", device); - mtd_unlock(device); - } switch (cmd) { case CMD_UNLOCK: + if (!unlocked) + mtd_unlock(device); break; case CMD_ERASE: - if (quiet < 2) - fprintf(stderr, "Erasing %s ...\n", device); + if (!unlocked) + mtd_unlock(device); mtd_erase(device); break; case CMD_WRITE: - if (quiet < 2) - fprintf(stderr, "Writing from %s to %s ... ", imagefile, device); + if (!unlocked) + mtd_unlock(device); mtd_write(imagefd, device); - if (quiet < 2) - fprintf(stderr, "\n"); + break; + case CMD_JFFS2WRITE: + if (!unlocked) + mtd_unlock(device); + mtd_write_jffs2(device, imagefile, jffs2dir); break; case CMD_REFRESH: - if (quiet < 2) - fprintf(stderr, "Refreshing mtd partition %s ... "); mtd_refresh(device); - if (quiet < 2) - fprintf(stderr, "\n"); break; } sync(); - if (boot) { - fprintf(stderr, "Rebooting ...\n"); - fflush(stderr); - syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL); - } + if (boot) + do_reboot(); + return 0; } -- cgit v1.2.3