add -f option to skip trx check

SVN-Revision: 1809

diff --git a/openwrt/package/mtd/mtd.c b/openwrt/package/mtd/mtd.c
index 74949fdac4b9559cc15810ac66f408c2a6d5fe2e..69ef0649608086f162b64a9364ae6e3957b8bc9f 100644 (file)
--- a/openwrt/package/mtd/mtd.c
+++ b/openwrt/package/mtd/mtd.c
@@ -55,7 +55,7 @@ struct trx_header {
 };
 
 int
-trx_check(const char *trxfile, const char *mtd)
+trx_check(const char *trxfile, const char *mtd, int force)
 {
        struct mtd_info_user mtdInfo;
        int trxfd, fd;
@@ -65,33 +65,35 @@ trx_check(const char *trxfile, const char *mtd)
 
        trxfd = open(trxfile,O_RDONLY); 
        if(trxfd < 0) {
-               fprintf(stderr, "Could not open trx image: %s\n", trxfile);
+               fprintf(stderr, "Could not open image: %s\n", trxfile);
                exit(1);
        }
 
        if (fstat(trxfd,&trxstat) < 0) {
-               fprintf(stderr, "Could not get trx image file status: %s\n", trxfile);
+               fprintf(stderr, "Could not get image file status: %s\n", trxfile);
                close(trxfd);
                exit(1);
        }
 
-       count = read(trxfd, &trx, sizeof(struct trx_header));
-       if (count < sizeof(struct trx_header)) {
-               fprintf(stderr, "Could not trx header, file too small (%ld bytes)\n", count);
-               close(trxfd);
-               exit(1);
-       }
+       if (force == 0) {
+               count = read(trxfd, &trx, sizeof(struct trx_header));
+               if (count < sizeof(struct trx_header)) {
+                       fprintf(stderr, "Could not get trx header, file too small (%ld bytes)\n", count);
+                       close(trxfd);
+                       exit(1);
+               }
 
-       if (trx.magic != TRX_MAGIC || trx.len < sizeof(struct trx_header)) {
-               fprintf(stderr, "Bad trx header\n");
-               fprintf(stderr, "If this is a firmware in bin format, like some of the\n"
-                               "original firmware files are, use following command to convert to trx:\n"
-                               "dd if=firmware.bin of=firmware.trx bs=32 skip=1\n");
-               close(trxfd);
-               exit(1);
-       }
+               if (trx.magic != TRX_MAGIC || trx.len < sizeof(struct trx_header)) {
+                       fprintf(stderr, "Bad trx header\n");
+                       fprintf(stderr, "If this is a firmware in bin format, like some of the\n"
+                                       "original firmware files are, use following command to convert to trx:\n"
+                                       "dd if=firmware.bin of=firmware.trx bs=32 skip=1\n");
+                       close(trxfd);
+                       exit(1);
+               }
        
-       lseek(trxfd, 0, SEEK_SET);
+               lseek(trxfd, 0, SEEK_SET);
+       }
 
        /* check if image fits to mtd device */
 
@@ -283,6 +285,7 @@ void usage(void)
        "       write <imagefile>       write imagefile to device\n"
        "Following options are available:\n"
        "       -r                      reboot after successful command\n"
+       "       -f                      force write without trx checks\n"
        "       -e <device>             erase <device> before executing the command\n\n"
        "Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n"
        "         mtd -r write linux.trx linux\n\n");
@@ -291,7 +294,7 @@ void usage(void)
 
 int main (int argc, char **argv)
 {
-       int ch, i, boot, unlock, trxfd;
+       int ch, i, boot, unlock, trxfd, force;
        char *erase[MAX_ARGS], *device;
        enum {
                CMD_ERASE,
@@ -301,9 +304,13 @@ int main (int argc, char **argv)
        
        erase[0] = NULL;
        boot = 0;
+       force = 0;
 
-       while ((ch = getopt(argc, argv, "re:")) != -1)
+       while ((ch = getopt(argc, argv, "fre:")) != -1)
                switch (ch) {
+                       case 'f':
+                               force = 1;
+                               break;
                        case 'r':
                                boot = 1;
                                break;
@@ -336,7 +343,7 @@ int main (int argc, char **argv)
                cmd = CMD_WRITE;
                device = argv[2];
                /* check trx file before erasing or writing anything */
-               trxfd = trx_check(argv[1], device);
+               trxfd = trx_check(argv[1], device, force);
        } else {
                usage();
        }