diff options
Diffstat (limited to 'src/basic/socket-util.h')
| -rw-r--r-- | src/basic/socket-util.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/basic/socket-util.h b/src/basic/socket-util.h index 449273d9a..8850d9f16 100644 --- a/src/basic/socket-util.h +++ b/src/basic/socket-util.h @@ -143,3 +143,14 @@ int receive_one_fd(int transport_fd, int flags); #define CMSG_FOREACH(cmsg, mh) \ for ((cmsg) = CMSG_FIRSTHDR(mh); (cmsg); (cmsg) = CMSG_NXTHDR((mh), (cmsg))) + +/* Covers only file system and abstract AF_UNIX socket addresses, but not unnamed socket addresses. */ +#define SOCKADDR_UN_LEN(sa) \ + ({ \ + const struct sockaddr_un *_sa = &(sa); \ + assert(_sa->sun_family == AF_UNIX); \ + offsetof(struct sockaddr_un, sun_path) + \ + (_sa->sun_path[0] == 0 ? \ + 1 + strnlen(_sa->sun_path+1, sizeof(_sa->sun_path)-1) : \ + strnlen(_sa->sun_path, sizeof(_sa->sun_path))); \ + }) |