X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/07f362a34dee5a659a57b9a6e332322706d58f13..fb9f9cdc813406041715d4c692f2b18cfd418cee:/package/mtd/src/mtd.c

diff --git a/package/mtd/src/mtd.c b/package/mtd/src/mtd.c
index ff75fcb8a..835cbcf4c 100644
--- a/package/mtd/src/mtd.c
+++ b/package/mtd/src/mtd.c
@@ -74,6 +74,7 @@ static char *imagefile = NULL;
 static char *jffs2file = NULL, *jffs2dir = JFFS2_DEFAULT_DIR;
 static int buflen = 0;
 int quiet;
+int no_erase;
 int mtdsize = 0;
 int erasesize = 0;
 
@@ -367,6 +368,16 @@ mtd_refresh(const char *mtd)
 	return 0;
 }
 
+static void
+indicate_writing(const char *mtd)
+{
+	if (quiet < 2)
+		fprintf(stderr, "\nWriting from %s to %s ... ", imagefile, mtd);
+
+	if (!quiet)
+		fprintf(stderr, " [ ]");
+}
+
 static int
 mtd_write(int imagefd, const char *mtd, char *fis_layout)
 {
@@ -374,6 +385,7 @@ mtd_write(int imagefd, const char *mtd, char *fis_layout)
 	char *str = NULL;
 	int fd, result;
 	ssize_t r, w, e;
+	ssize_t skip = 0;
 	uint32_t offset = 0;
 
 #ifdef FIS_SUPPORT
@@ -451,13 +463,9 @@ resume:
 		exit(1);
 	}
 
-	if (quiet < 2)
-		fprintf(stderr, "Writing from %s to %s ... ", imagefile, mtd);
+	indicate_writing(mtd);
 
 	w = e = 0;
-	if (!quiet)
-		fprintf(stderr, " [ ]");
-
 	for (;;) {
 		/* buffer may contain data already (from trx check or last mtd partition write attempt) */
 		while (buflen < erasesize) {
@@ -480,6 +488,15 @@ resume:
 		if (buflen == 0)
 			break;
 
+		if (skip > 0) {
+			skip -= buflen;
+			buflen = 0;
+			if (skip <= 0)
+				indicate_writing(mtd);
+
+			continue;
+		}
+
 		if (jffs2file) {
 			if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF) - 1) == 0) {
 				if (!quiet)
@@ -487,8 +504,14 @@ resume:
 				if (quiet < 2)
 					fprintf(stderr, "\nAppending jffs2 data from %s to %s...", jffs2file, mtd);
 				/* got an EOF marker - this is the place to add some jffs2 data */
-				mtd_replace_jffs2(mtd, fd, e, jffs2file);
-				goto done;
+				skip = mtd_replace_jffs2(mtd, fd, e, jffs2file);
+
+				w += skip;
+				e += skip;
+				skip -= buflen;
+				buflen = 0;
+				offset = 0;
+				continue;
 			}
 			/* no EOF marker, make sure we figure out the last inode number
 			 * before appending some data */
@@ -496,31 +519,34 @@ resume:
 		}
 
 		/* need to erase the next block before writing data to it */
-		while (w + buflen > e) {
-			if (!quiet)
-				fprintf(stderr, "\b\b\b[e]");
-
-
-			if (mtd_erase_block(fd, e) < 0) {
-				if (next) {
-					if (w < e) {
-						write(fd, buf + offset, e - w);
-						offset = e - w;
+		if(!no_erase)
+		{
+			while (w + buflen > e) {
+				if (!quiet)
+					fprintf(stderr, "\b\b\b[e]");
+
+
+				if (mtd_erase_block(fd, e) < 0) {
+					if (next) {
+						if (w < e) {
+							write(fd, buf + offset, e - w);
+							offset = e - w;
+						}
+						w = 0;
+						e = 0;
+						close(fd);
+						mtd = next;
+						fprintf(stderr, "\b\b\b   \n");
+						goto resume;
+					} else {
+						fprintf(stderr, "Failed to erase block\n");
+						exit(1);
 					}
-					w = 0;
-					e = 0;
-					close(fd);
-					mtd = next;
-					fprintf(stderr, "\b\b\b   \n");
-					goto resume;
-				} else {
-					fprintf(stderr, "Failed to erase block\n");
-					exit(1);
 				}
-			}
 
-			/* erase the chunk */
-			e += erasesize;
+				/* erase the chunk */
+				e += erasesize;
+			}
 		}
 
 		if (!quiet)
@@ -573,6 +599,7 @@ static void usage(void)
 	"Following options are available:\n"
 	"        -q                      quiet mode (once: no [w] on writing,\n"
 	"                                           twice: no status messages)\n"
+	"        -n                      write without first erasing the blocks\n"
 	"        -r                      reboot after successful command\n"
 	"        -f                      force write without trx checks\n"
 	"        -e <device>             erase <device> before executing the command\n"
@@ -624,12 +651,13 @@ int main (int argc, char **argv)
 	force = 0;
 	buflen = 0;
 	quiet = 0;
+  no_erase = 0;
 
 	while ((ch = getopt(argc, argv,
 #ifdef FIS_SUPPORT
 			"F:"
 #endif
-			"frqe:d:j:o:")) != -1)
+			"frnqe:d:j:o:")) != -1)
 		switch (ch) {
 			case 'f':
 				force = 1;
@@ -637,6 +665,9 @@ int main (int argc, char **argv)
 			case 'r':
 				boot = 1;
 				break;
+			case 'n':
+				no_erase = 1;
+				break;
 			case 'j':
 				jffs2file = optarg;
 				break;