add -a and -b options needed for jffs2 root

SVN-Revision: 275

diff --git a/openwrt/package/openwrt/trx.c b/openwrt/package/openwrt/trx.c
index f029dc5fba0ae59651513a312ef28b98218771c9..05a6604e1cb51881c15a9d964fed8a1f8f7da4ed 100644 (file)
--- a/openwrt/package/openwrt/trx.c
+++ b/openwrt/package/openwrt/trx.c
@@ -31,6 +31,10 @@
  * Sigh... Make it endian-neutral.
  *
  * TODO: Support '-b' option to specify offsets for each file.
+ *
+ * February 19, 2005 - mbm
+ *
+ * Add -a (align offset) and -b (absolute offset)
  */
 
 #include <stdio.h>
@@ -75,7 +79,7 @@ void usage(void) __attribute__ (( __noreturn__ ));
 
 void usage(void)
 {
-       fprintf(stderr, "Usage: trx [-o outfile] [-m maxlen] file [file [file]]\n");
+       fprintf(stderr, "Usage: trx [-o outfile] [-m maxlen] [-a align] [-b offset] file [file [file]]\n");
        exit(EXIT_FAILURE);
 }
 
@@ -92,12 +96,54 @@ int main(int argc, char **argv)
        unsigned long maxlen = TRX_MAX_LEN;
        struct trx_header *p;
 
-       fprintf(stderr, "mjn3's trx replacement - v0.81\n");
+       fprintf(stderr, "mjn3's trx replacement - v0.81.1\n");
+
+       if (!(buf = malloc(maxlen))) {
+               fprintf(stderr, "malloc failed\n");
+               return EXIT_FAILURE;
+       }
+
+       p = (struct trx_header *) buf;
 
-       while ((c = getopt(argc, argv, "o:m:")) != -1) {
+       p->magic = STORE32_LE(TRX_MAGIC);
+       cur_len = sizeof(struct trx_header);
+       p->flag_version = STORE32_LE((TRX_VERSION << 16));
+
+       in = NULL;
+       i = 0;
+
+       while ((c = getopt(argc, argv, "-:o:m:a:b:")) != -1) {
                switch (c) {
+                       case 1:
+                               p->offsets[i++] = STORE32_LE(cur_len);
+
+                               if (!(in = fopen(optarg, "r"))) {
+                                       fprintf(stderr, "can not open \"%s\" for reading\n", optarg);
+                                       usage();
+                               }
+                               n = fread(buf + cur_len, 1, maxlen - cur_len, in);
+                               if (!feof(in)) {
+                                       fprintf(stderr, "fread failure or file \"%s\" too large\n",optarg);
+                                       fclose(in);
+                                       return EXIT_FAILURE;
+                               }
+                               fclose(in);
+#undef  ROUND
+#define ROUND 4
+                               if (n & (ROUND-1)) {
+                                       memset(buf + cur_len + n, 0, ROUND - (n & (ROUND-1)));
+                                       n += ROUND - (n & (ROUND-1));
+                               }
+                               cur_len += n;
+
+                               break;
                        case 'o':
                                ofn = optarg;
+                               if (ofn && !(out = fopen(ofn, "w"))) {
+                                       fprintf(stderr, "can not open \"%s\" for writing\n", ofn);
+                                       usage();
+                               }
+
                                break;
                        case 'm':
                                errno = 0;
@@ -115,76 +161,40 @@ int main(int argc, char **argv)
                                        fprintf(stderr, "maxlen too small (or wrapped)\n");
                                        usage();
                                }
+                               if (maxlen > TRX_MAX_LEN) {
+                                       fprintf(stderr, "WARNING: maxlen exceeds default maximum!  Beware of overwriting nvram!\n");
+                               }
+                               if (!(buf = realloc(buf,maxlen))) {
+                                       fprintf(stderr, "realloc failed");
+                                       return EXIT_FAILURE;
+                               }
                                break;
+                       case 'a':
+                               n = atoi(optarg);
+                               if (cur_len & (n-1)) {
+                                       n = n - (cur_len & (n-1));
+                                       memset(buf + cur_len, 0, n);
+                                       cur_len += n;
+                               }
+                               break;
+                       case 'b':
+                               n = atoi(optarg);
+                               if (n < cur_len) {
+                                       fprintf(stderr, "WARNING: current length exceeds -b %d offset",n);
+                               } else {
+                                       memset(buf + cur_len, 0, n - cur_len);
+                                       cur_len = n;
+                               }
                        default:
                                usage();
                }
        }
 
-       if (ofn && !(out = fopen(ofn, "w"))) {
-               fprintf(stderr, "can not open \"%s\" for writing\n", ofn);
-               usage();
-       }
-
-       if (optind == argc) {
-               fprintf(stderr, "we require at least one arg\n");
-               usage();
-       }
-
-       if (argc - optind > 3) {
-               fprintf(stderr, "too many args: %d > 3\n", argc - optind);
+       if (!in) {
+               fprintf(stderr, "we require atleast one filename\n");
                usage();
        }
 
-       if (maxlen > TRX_MAX_LEN) {
-               fprintf(stderr, "WARNING: maxlen exceeds default maximum!  Beware of overwriting nvram!\n");
-       }
-
-       if (!(buf = malloc(maxlen))) {
-               fprintf(stderr, "malloc failed\n");
-               return EXIT_FAILURE;
-       }
-
-       p = (struct trx_header *) buf;
-
-       p->magic = STORE32_LE(TRX_MAGIC);
-       cur_len = sizeof(struct trx_header);
-       p->flag_version = STORE32_LE((TRX_VERSION << 16));
-
-       i = 0;
-
-       while (optind < argc) {
-               p->offsets[i++] = STORE32_LE(cur_len);
-
-               if (!(in = fopen(argv[optind], "r"))) {
-                       fprintf(stderr, "can not open \"%s\" for reading\n", argv[optind]);
-                       usage();
-               }
-
-               n = fread(buf + cur_len, 1, maxlen - cur_len, in);
-               if (!feof(in)) {
-                       fprintf(stderr, "fread failure or file \"%s\" too large\n",
-                                       argv[optind]);
-                       fclose(in);
-                       return EXIT_FAILURE;
-               }
-
-               fclose(in);
-
-               ++optind;
-
-               if (optind < argc) {
-#undef  ROUND
-#define ROUND 4
-                       if (n & (ROUND-1)) {
-                               memset(buf + cur_len + n, 0, ROUND - (n & (ROUND-1)));
-                               n += ROUND - (n & (ROUND-1));
-                       }
-               }
-
-               cur_len += n;
-       }
-
 #undef  ROUND
 #define ROUND 0x1000
        n = cur_len & (ROUND-1);