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-rw-r--r--samples/seccomp/user-trap.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/samples/seccomp/user-trap.c b/samples/seccomp/user-trap.c
index 20291ec6489f..a23fec357b5d 100644
--- a/samples/seccomp/user-trap.c
+++ b/samples/seccomp/user-trap.c
@@ -33,6 +33,7 @@ static int send_fd(int sock, int fd)
{
struct msghdr msg = {};
struct cmsghdr *cmsg;
+ int *fd_ptr;
char buf[CMSG_SPACE(sizeof(int))] = {0}, c = 'c';
struct iovec io = {
.iov_base = &c,
@@ -47,7 +48,8 @@ static int send_fd(int sock, int fd)
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
- *((int *)CMSG_DATA(cmsg)) = fd;
+ fd_ptr = (int *)CMSG_DATA(cmsg);
+ *fd_ptr = fd;
msg.msg_controllen = cmsg->cmsg_len;
if (sendmsg(sock, &msg, 0) < 0) {
@@ -62,6 +64,7 @@ static int recv_fd(int sock)
{
struct msghdr msg = {};
struct cmsghdr *cmsg;
+ int *fd_ptr;
char buf[CMSG_SPACE(sizeof(int))] = {0}, c = 'c';
struct iovec io = {
.iov_base = &c,
@@ -79,8 +82,9 @@ static int recv_fd(int sock)
}
cmsg = CMSG_FIRSTHDR(&msg);
+ fd_ptr = (int *)CMSG_DATA(cmsg);
- return *((int *)CMSG_DATA(cmsg));
+ return *fd_ptr;
}
static int user_trap_syscall(int nr, unsigned int flags)