X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/201ca503a1359e668cafbbaa24eaaf23b8ef4b9e..dc7f25c42c6aaf6fbd29f7b2971244d3ed4baa26:/package/mtd/src/mtd.c

diff --git a/package/mtd/src/mtd.c b/package/mtd/src/mtd.c
index 027c859df..761139f4e 100644
--- a/package/mtd/src/mtd.c
+++ b/package/mtd/src/mtd.c
@@ -46,17 +46,9 @@
 #include "mtd-api.h"
 #include "mtd.h"
 
-#define TRX_MAGIC       0x30524448      /* "HDR0" */
 #define MAX_ARGS 8
-
-#define DEBUG
-
 #define JFFS2_DEFAULT_DIR	"" /* directory name without /, empty means root dir */
 
-#define SYSTYPE_UNKNOWN     0
-#define SYSTYPE_BROADCOM    1
-/* to be continued */
-
 struct trx_header {
 	uint32_t magic;		/* "HDR0" */
 	uint32_t len;		/* Length of file including header */
@@ -73,7 +65,7 @@ int quiet;
 int mtdsize = 0;
 int erasesize = 0;
 
-int mtd_open(const char *mtd)
+int mtd_open(const char *mtd, bool block)
 {
 	FILE *fp;
 	char dev[PATH_MAX];
@@ -84,9 +76,9 @@ int mtd_open(const char *mtd)
 	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);
+				snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
 				if ((ret=open(dev, flags))<0) {
-					snprintf(dev, sizeof(dev), "/dev/mtd%d", i);
+					snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
 					ret=open(dev, flags);
 				}
 				fclose(fp);
@@ -104,7 +96,7 @@ int mtd_check_open(const char *mtd)
 	struct mtd_info_user mtdInfo;
 	int fd;
 
-	fd = mtd_open(mtd);
+	fd = mtd_open(mtd, false);
 	if(fd < 0) {
 		fprintf(stderr, "Could not open mtd device: %s\n", mtd);
 		return 0;
@@ -132,69 +124,25 @@ int mtd_erase_block(int fd, int offset)
 		fprintf(stderr, "Erasing mtd failed.\n");
 		exit(1);
 	}
+	return 0;
 }
 
 int mtd_write_buffer(int fd, const char *buf, int offset, int length)
 {
 	lseek(fd, offset, SEEK_SET);
 	write(fd, buf, length);
+	return 0;
 }
 
 
-#ifdef target_brcm
-static int
-image_check_brcm(int imagefd, const char *mtd)
-{
-	struct trx_header *trx = (struct trx_header *) buf;
-	int fd;
-
-	if (strcmp(mtd, "linux") != 0)
-		return 1;
-	
-	buflen = read(imagefd, buf, 32);
-	if (buflen < 32) {
-		fprintf(stdout, "Could not get image header, file too small (%ld bytes)\n", buflen);
-		return 0;
-	}
-
-	if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
-		if (quiet < 2) {
-			fprintf(stderr, "Bad trx header\n");
-			fprintf(stderr, "This is not the correct file format; refusing to flash.\n"
-					"Please specify the correct file or use -f to force.\n");
-		}
-		return 0;
-	}
-
-	/* check if image fits to mtd device */
-	fd = mtd_check_open(mtd);
-	if(fd < 0) {
-		fprintf(stderr, "Could not open mtd device: %s\n", mtd);
-		exit(1);
-	}
-
-	if(mtdsize < trx->len) {
-		fprintf(stderr, "Image too big for partition: %s\n", mtd);
-		close(fd);
-		return 0;
-	}	
-	
-	close(fd);
-	return 1;
-}
-#endif /* target_brcm */
-
 static int
 image_check(int imagefd, const char *mtd)
 {
-	int fd, systype;
-	size_t count;
-	char *c;
-	FILE *f;
-
+	int ret = 1;
 #ifdef target_brcm
-	return image_check_brcm(imagefd, mtd);
+	ret = trx_check(imagefd, mtd, buf, &buflen);
 #endif
+	return ret;
 }
 
 static int mtd_check(const char *mtd)
@@ -299,10 +247,8 @@ mtd_refresh(const char *mtd)
 static int
 mtd_write(int imagefd, const char *mtd)
 {
-	int fd, i, result;
-	size_t r, w, e;
-	struct erase_info_user mtdEraseInfo;
-	int ret = 0;
+	int fd, result;
+	ssize_t r, w, e;
 
 	fd = mtd_check_open(mtd);
 	if(fd < 0) {
@@ -319,11 +265,25 @@ mtd_write(int imagefd, const char *mtd)
 
 	for (;;) {
 		/* buffer may contain data already (from trx check) */
-		r = read(imagefd, buf + buflen, erasesize - buflen);
-		if (r < 0)
-			break;
+		do {
+			r = read(imagefd, buf + buflen, erasesize - buflen);
+			if (r < 0) {
+				if ((errno == EINTR) || (errno == EAGAIN))
+					continue;
+				else {
+					perror("read");
+					break;
+				}
+			}
+
+			if (r == 0)
+				break;
+
+			buflen += r;
+		} while (buflen < erasesize);
 
-		buflen += r;
+		if (buflen == 0)
+			break;
 
 		if (jffs2file) {
 			if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF)) == 0) {
@@ -332,7 +292,7 @@ mtd_write(int imagefd, const char *mtd)
 				if (quiet < 2)
 					fprintf(stderr, "\nAppending jffs2 data to from %s to %s...", jffs2file, mtd);
 				/* got an EOF marker - this is the place to add some jffs2 data */
-				mtd_replace_jffs2(fd, e, jffs2file);
+				mtd_replace_jffs2(mtd, fd, e, jffs2file);
 				goto done;
 			}
 			/* no EOF marker, make sure we figure out the last inode number
@@ -365,10 +325,6 @@ mtd_write(int imagefd, const char *mtd)
 		}
 		w += buflen;
 
-		/* not enough data - eof */
-		if (buflen < erasesize)
-			break;
-
 		buflen = 0;
 	}
 	if (!quiet)
@@ -421,15 +377,15 @@ static void do_reboot(void)
 
 int main (int argc, char **argv)
 {
-	int ch, i, boot, unlock, imagefd, force, unlocked;
-	char *erase[MAX_ARGS], *device;
+	int ch, i, boot, imagefd = 0, force, unlocked;
+	char *erase[MAX_ARGS], *device = NULL;
 	enum {
 		CMD_ERASE,
 		CMD_WRITE,
 		CMD_UNLOCK,
 		CMD_REFRESH,
 		CMD_JFFS2WRITE
-	} cmd;
+	} cmd = -1;
 	
 	erase[0] = NULL;
 	boot = 0;