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selftest: af_unix: Silence -Wflex-array-member-not-at-end warning for scm_rights.c.

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scm_rights.c has no problem in functionality, but when compiled with
-Wflex-array-member-not-at-end, it shows this warning:

scm_rights.c: In function ‘__send_fd’:
scm_rights.c:275:32: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
  275 |                 struct cmsghdr cmsghdr;
      |                                ^~~~~~~

Let's silence it.

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250811215432.3379570-4-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Kuniyuki Iwashima 2025-08-11 21:53:06 +00:00 committed by Jakub Kicinski
parent 942224e6ba
commit 9a58d8e682
1 changed files with 13 additions and 15 deletions
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28
tools/testing/selftests/net/af_unix/scm_rights.c
View File

@ -271,20 +271,11 @@ void __send_fd(struct __test_metadata *_metadata,
{
#define MSG "x"
#define MSGLEN 1
struct {
struct cmsghdr cmsghdr;
int fd[2];
} cmsg = {
.cmsghdr = {
.cmsg_len = CMSG_LEN(sizeof(cmsg.fd)),
.cmsg_level = SOL_SOCKET,
.cmsg_type = SCM_RIGHTS,
},
.fd = {
self->fd[inflight * 2],
self->fd[inflight * 2],
},
int fds[2] = {
self->fd[inflight * 2],
self->fd[inflight * 2],
};
char cmsg_buf[CMSG_SPACE(sizeof(fds))];
struct iovec iov = {
.iov_base = MSG,
.iov_len = MSGLEN,
@ -294,11 +285,18 @@ void __send_fd(struct __test_metadata *_metadata,
.msg_namelen = 0,
.msg_iov = &iov,
.msg_iovlen = 1,
.msg_control = &cmsg,
.msg_controllen = CMSG_SPACE(sizeof(cmsg.fd)),
.msg_control = cmsg_buf,
.msg_controllen = sizeof(cmsg_buf),
};
struct cmsghdr *cmsg;
int ret;
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(sizeof(fds));
memcpy(CMSG_DATA(cmsg), fds, sizeof(fds));
ret = sendmsg(self->fd[receiver * 2 + 1], &msg, variant->flags);
if (variant->disabled) {