diff options
Diffstat (limited to 'include/linux/socket.h')
| -rw-r--r-- | include/linux/socket.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h index b3aef7bf1380..4c7d11301abf 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -90,6 +90,10 @@ struct cmsghdr { (struct cmsghdr *)(ctl) : \ (struct cmsghdr *)NULL) #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) +#define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ + (cmsg)->cmsg_len <= (unsigned long) \ + ((mhdr)->msg_controllen - \ + ((char *)(cmsg) - (char *)(mhdr)->msg_control))) /* * This mess will go away with glibc |