Implement "insmod -".

Also use finit_module if available. Given that "insmod -" requires
init_module, maybe this isn't a worthwhile optimization. Given that
"insmod /actual/file.ko" is the common use case, maybe it is.

Fix a bug in readfileat where *plen would be corrupted if you didn't supply
your own buffer (because ibuf is 0 in that case, not a pointer to the start
of the allocated space).

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/lib.c b/lib/lib.c
index e80b8b12..43db2e37 100644
--- a/lib/lib.c
+++ b/lib/lib.c
@@ -475,12 +475,12 @@ char *readfileat(int dirfd, char *name, char *ibuf, off_t *plen)
     rbuf = buf+rlen;
     len -= rlen;
   }
-  *plen = len = rlen+(buf-ibuf);
+  *plen = len = rlen+(rbuf-buf);
   close(fd);
 
   if (rlen<0) {
     if (ibuf != buf) free(buf);
-    buf =  0;
+    buf = 0;
   } else buf[len] = 0;
 
   return buf;