debugfs: teach logdump the -n <num_trans> option

[tools/e2fsprogs.git] / debugfs / util.c

diff --git a/debugfs/util.c b/debugfs/util.c
index 759bb39..9e88054 100644 (file)
--- a/debugfs/util.c
+++ b/debugfs/util.c
@@ -521,7 +521,7 @@ errcode_t read_list(char *str, blk64_t **list, size_t *len)
        blk64_t *lst = *list;
        size_t ln = *len;
        char *tok, *p = str;
-       errcode_t retval;
+       errcode_t retval = 0;
 
        while ((tok = strtok(p, ","))) {
                blk64_t *l;
@@ -530,24 +530,28 @@ errcode_t read_list(char *str, blk64_t **list, size_t *len)
 
                errno = 0;
                y = x = strtoull(tok, &e, 0);
-               if (errno)
-                       return errno;
+               if (errno) {
+                       retval = errno;
+                       break;
+               }
                if (*e == '-') {
                        y = strtoull(e + 1, NULL, 0);
-                       if (errno)
-                               return errno;
+                       if (errno) {
+                               retval = errno;
+                               break;
+                       }
                } else if (*e != 0) {
                        retval = EINVAL;
-                       goto err;
+                       break;
                }
                if (y < x) {
                        retval = EINVAL;
-                       goto err;
+                       break;
                }
                l = realloc(lst, sizeof(blk64_t) * (ln + y - x + 1));
                if (l == NULL) {
                        retval = ENOMEM;
-                       goto err;
+                       break;
                }
                lst = l;
                for (; x <= y; x++)
@@ -557,8 +561,40 @@ errcode_t read_list(char *str, blk64_t **list, size_t *len)
 
        *list = lst;
        *len = ln;
-       return 0;
-err:
-       free(lst);
        return retval;
 }
+
+void do_byte_hexdump(FILE *fp, unsigned char *buf, size_t bufsize)
+{
+       size_t          i, j, max;
+       int             suppress = -1;
+
+       for (i = 0; i < bufsize; i += 16) {
+               max = (bufsize - i > 16) ? 16 : bufsize - i;
+               if (suppress < 0) {
+                       if (i && memcmp(buf + i, buf + i - max, max) == 0) {
+                               suppress = i;
+                               fprintf(fp, "*\n");
+                               continue;
+                       }
+               } else {
+                       if (memcmp(buf + i, buf + suppress, max) == 0)
+                               continue;
+                       suppress = -1;
+               }
+               fprintf(fp, "%04o  ", (unsigned int)i);
+               for (j = 0; j < 16; j++) {
+                       if (j < max)
+                               fprintf(fp, "%02x", buf[i+j]);
+                       else
+                               fprintf(fp, "  ");
+                       if ((j % 2) == 1)
+                               fprintf(fp, " ");
+               }
+               fprintf(fp, " ");
+               for (j = 0; j < max; j++)
+                       fprintf(fp, "%c", isprint(buf[i+j]) ? buf[i+j] : '.');
+               fprintf(fp, "\n");
+       }
+       fprintf(fp, "\n");
+}