diff options
Diffstat (limited to 'src/basic')
| -rw-r--r-- | src/basic/socket-util.c | 14 | ||||
| -rw-r--r-- | src/basic/socket-util.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/basic/socket-util.c b/src/basic/socket-util.c index f47a8f04e..16646ff9d 100644 --- a/src/basic/socket-util.c +++ b/src/basic/socket-util.c @@ -1052,3 +1052,17 @@ int flush_accept(int fd) { } } #endif // 0 + +struct cmsghdr* cmsg_find(struct msghdr *mh, int level, int type, socklen_t length) { + struct cmsghdr *cmsg; + + assert(mh); + + CMSG_FOREACH(cmsg, mh) + if (cmsg->cmsg_level == level && + cmsg->cmsg_type == type && + (length == (socklen_t) -1 || length == cmsg->cmsg_len)) + return cmsg; + + return NULL; +} diff --git a/src/basic/socket-util.h b/src/basic/socket-util.h index b5d1dc3ed..a88ab9fd2 100644 --- a/src/basic/socket-util.h +++ b/src/basic/socket-util.h @@ -150,6 +150,8 @@ int flush_accept(int fd); #define CMSG_FOREACH(cmsg, mh) \ for ((cmsg) = CMSG_FIRSTHDR(mh); (cmsg); (cmsg) = CMSG_NXTHDR((mh), (cmsg))) +struct cmsghdr* cmsg_find(struct msghdr *mh, int level, int type, socklen_t length); + /* Covers only file system and abstract AF_UNIX socket addresses, but not unnamed socket addresses. */ #define SOCKADDR_UN_LEN(sa) \ ({ \ |