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authorGerd Hoffmann <kraxel@redhat.com>2011-07-12 13:35:10 +0200
committerGerd Hoffmann <kraxel@redhat.com>2011-08-04 15:51:22 +0200
commit3a1dca94d6dba00fe0fd4c4a28449f57e01b9b6c (patch)
tree6962d3b2f20e0a9d502887bf41b71694b58806fd /iov.c
parentfa57ee8ed246cfea53acd09663203deda64b4f33 (diff)
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Add iov_hexdump()
Useful for debugging purposes. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'iov.c')
-rw-r--r--iov.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/iov.c b/iov.c
index 1e02791..60553c7 100644
--- a/iov.c
+++ b/iov.c
@@ -73,3 +73,34 @@ size_t iov_size(const struct iovec *iov, const unsigned int iov_cnt)
}
return len;
}
+
+void iov_hexdump(const struct iovec *iov, const unsigned int iov_cnt,
+ FILE *fp, const char *prefix, size_t limit)
+{
+ unsigned int i, v, b;
+ uint8_t *c;
+
+ c = iov[0].iov_base;
+ for (i = 0, v = 0, b = 0; b < limit; i++, b++) {
+ if (i == iov[v].iov_len) {
+ i = 0; v++;
+ if (v == iov_cnt) {
+ break;
+ }
+ c = iov[v].iov_base;
+ }
+ if ((b % 16) == 0) {
+ fprintf(fp, "%s: %04x:", prefix, b);
+ }
+ if ((b % 4) == 0) {
+ fprintf(fp, " ");
+ }
+ fprintf(fp, " %02x", c[i]);
+ if ((b % 16) == 15) {
+ fprintf(fp, "\n");
+ }
+ }
+ if ((b % 16) != 0) {
+ fprintf(fp, "\n");
+ }
+}