Get rid of webipc.h and DJBUNIX_FLAG_*

 Decent semantic header separation is hard. It's always
an ongoing process. Here socket.h always included webipc.h
for listen(), and webipc.h always included djbunix.h for
socket_internal() and socketpair_internal(). That's ugh.
Just move all the socket stuff into one socket header.
Of course, djbunix.h is still needed most of the time for
fd_close() and other operations on fds, but those are
generic anyway.

 Also, O_CLOEXEC exists everywhere now, so we can use it as well
as O_NONBLOCK instead of redefining the flags in djbunix.h.

21 files changed, 56 insertions, 43 deletions

diff --git a/src/libstddjb/child_spawn1_socket.c b/src/libstddjb/child_spawn1_socket.c
index 7263ff6..0bb2da9 100644
--- a/src/libstddjb/child_spawn1_socket.c
+++ b/src/libstddjb/child_spawn1_socket.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 #include <skalibs/djbunix.h>
 #include "djbunix-internal.h"
 
diff --git a/src/libstddjb/ipc_accept.c b/src/libstddjb/ipc_accept.c
index b0b44c3..9d5d82c 100644
--- a/src/libstddjb/ipc_accept.c
+++ b/src/libstddjb/ipc_accept.c
@@ -6,9 +6,11 @@
 #include <sys/un.h>
 #include <string.h>
 #include <errno.h>
+#include <fcntl.h>
+
 #include <skalibs/bytestr.h>
 #include <skalibs/djbunix.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_accept_internal (int s, char *p, size_t l, int *trunc, unsigned int options)
 {
@@ -18,15 +20,15 @@ int ipc_accept_internal (int s, char *p, size_t l, int *trunc, unsigned int opti
   memset(&sa, 0, dummy) ;
   do
 #ifdef SKALIBS_HASACCEPT4
-    fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
+    fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & O_NONBLOCK) ? SOCK_NONBLOCK : 0) | ((options & O_CLOEXEC) ? SOCK_CLOEXEC : 0)) ;
 #else
     fd = accept(s, (struct sockaddr *)&sa, &dummy) ;
 #endif
   while ((fd == -1) && (errno == EINTR)) ;
   if (fd == -1) return -1 ;
 #ifndef SKALIBS_HASACCEPT4
-  if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
-   || (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
+  if ((((options & O_NONBLOCK) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
+   || (((options & O_CLOEXEC) ? coe(fd) : uncoe(fd)) < 0))
   {
     fd_close(fd) ;
     return -1 ;
diff --git a/src/libstddjb/ipc_bind.c b/src/libstddjb/ipc_bind.c
index d40a7ef..c26fb1d 100644
--- a/src/libstddjb/ipc_bind.c
+++ b/src/libstddjb/ipc_bind.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
 #include <skalibs/nonposix.h>
-
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <string.h>
 #include <errno.h>
 
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 #include <skalibs/posixishard.h>
 
 int ipc_bind (int s, char const *p)
diff --git a/src/libstddjb/ipc_bind_reuse.c b/src/libstddjb/ipc_bind_reuse.c
index ce5c7a4..193d10c 100644
--- a/src/libstddjb/ipc_bind_reuse.c
+++ b/src/libstddjb/ipc_bind_reuse.c
@@ -1,6 +1,6 @@
 /* ISC license. */
 
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_bind_reuse (int s, char const *p)
 {
diff --git a/src/libstddjb/ipc_bind_reuse_lock.c b/src/libstddjb/ipc_bind_reuse_lock.c
index b1bccfd..c872e44 100644
--- a/src/libstddjb/ipc_bind_reuse_lock.c
+++ b/src/libstddjb/ipc_bind_reuse_lock.c
@@ -8,7 +8,7 @@
 #include <sys/socket.h>
 
 #include <skalibs/djbunix.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_bind_reuse_lock (int s, char const *p, int *fdlock)
 {
@@ -24,8 +24,10 @@ int ipc_bind_reuse_lock (int s, char const *p, int *fdlock)
   r = fd_lock(fd, 1, 1) ;
   if (r < 0) return -1 ;
   if (!r) return (errno = EBUSY, -1) ;
+  r = errno ;
   setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof opt) ;
-  unlink(p) ;
+  errno = r ;
+  unlink_void(p) ;
   if (ipc_bind(s, p) < 0) return -1 ;
   *fdlock = fd ;
   return 0 ;
diff --git a/src/libstddjb/ipc_connect.c b/src/libstddjb/ipc_connect.c
index c00f683..7ccba09 100644
--- a/src/libstddjb/ipc_connect.c
+++ b/src/libstddjb/ipc_connect.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
 #include <skalibs/nonposix.h>
-
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <string.h>
 
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 #include <skalibs/posixishard.h>
 
 int ipc_connect (int s, char const *p)
diff --git a/src/libstddjb/ipc_connected.c b/src/libstddjb/ipc_connected.c
index a079fd5..310649b 100644
--- a/src/libstddjb/ipc_connected.c
+++ b/src/libstddjb/ipc_connected.c
@@ -3,8 +3,9 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+
 #include <skalibs/allreadwrite.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_connected (int s)
 {
diff --git a/src/libstddjb/ipc_dgram.c b/src/libstddjb/ipc_dgram.c
index ac61ee7..78ea032 100644
--- a/src/libstddjb/ipc_dgram.c
+++ b/src/libstddjb/ipc_dgram.c
@@ -2,8 +2,7 @@
 
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
-#include <skalibs/djbunix.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_datagram_internal (unsigned int flags)
 {
diff --git a/src/libstddjb/ipc_listen.c b/src/libstddjb/ipc_listen.c
index a96be58..141a2ea 100644
--- a/src/libstddjb/ipc_listen.c
+++ b/src/libstddjb/ipc_listen.c
@@ -2,7 +2,7 @@
 
 #include <skalibs/nonposix.h> 
 #include <sys/socket.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_listen (int s, int backlog)
 {
diff --git a/src/libstddjb/ipc_local.c b/src/libstddjb/ipc_local.c
index e617264..849d9ce 100644
--- a/src/libstddjb/ipc_local.c
+++ b/src/libstddjb/ipc_local.c
@@ -4,8 +4,9 @@
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <string.h>
+
 #include <skalibs/bytestr.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_local (int s, char *p, size_t l, int *trunc)
 {
diff --git a/src/libstddjb/ipc_pair.c b/src/libstddjb/ipc_pair.c
index 6038d17..5400e63 100644
--- a/src/libstddjb/ipc_pair.c
+++ b/src/libstddjb/ipc_pair.c
@@ -2,8 +2,7 @@
 
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
-#include <skalibs/djbunix.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_pair_internal (int *sv, unsigned int flags)
 {
diff --git a/src/libstddjb/ipc_recv.c b/src/libstddjb/ipc_recv.c
index 4c235bb..407b3cc 100644
--- a/src/libstddjb/ipc_recv.c
+++ b/src/libstddjb/ipc_recv.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
 #include <skalibs/nonposix.h>
-
+#include <string.h>
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/un.h>
-#include <string.h>
 
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 #include <skalibs/posixishard.h>
 
 ssize_t ipc_recv (int fd, char *s, size_t len, char *path)
diff --git a/src/libstddjb/ipc_send.c b/src/libstddjb/ipc_send.c
index 2615a16..b9cfe49 100644
--- a/src/libstddjb/ipc_send.c
+++ b/src/libstddjb/ipc_send.c
@@ -1,13 +1,12 @@
 /* ISC license. */
 
 #include <skalibs/nonposix.h>
-
 #include <errno.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <string.h>
 
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 #include <skalibs/posixishard.h>
 
 ssize_t ipc_send (int fd, char const *s, size_t len, char const *path)
diff --git a/src/libstddjb/ipc_stream.c b/src/libstddjb/ipc_stream.c
index c2c6c1b..265236d 100644
--- a/src/libstddjb/ipc_stream.c
+++ b/src/libstddjb/ipc_stream.c
@@ -2,8 +2,7 @@
 
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
-#include <skalibs/djbunix.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_stream_internal (unsigned int flags)
 {
diff --git a/src/libstddjb/ipc_timed_connect.c b/src/libstddjb/ipc_timed_connect.c
index e08b32b..ff88018 100644
--- a/src/libstddjb/ipc_timed_connect.c
+++ b/src/libstddjb/ipc_timed_connect.c
@@ -1,9 +1,10 @@
 /* ISC license. */
 
 #include <errno.h>
+
 #include <skalibs/error.h>
 #include <skalibs/iopause.h>
-#include <skalibs/webipc.h>
+#include <skalibs/socket.h>
 
 int ipc_timed_connect (int s, char const *path, tain_t const *deadline, tain_t *stamp)
 {
diff --git a/src/libstddjb/pipe_internal.c b/src/libstddjb/pipe_internal.c
index 598ab9c..dc7cfe6 100644
--- a/src/libstddjb/pipe_internal.c
+++ b/src/libstddjb/pipe_internal.c
@@ -6,26 +6,28 @@
 
 #include <skalibs/nonposix.h>
 #include <unistd.h>
-#include <fcntl.h>
+
 #include <skalibs/djbunix.h>
 
 int pipe_internal (int *p, unsigned int flags)
 {
-  return pipe2(p, ((flags & DJBUNIX_FLAG_COE) ? O_CLOEXEC : 0) | ((flags & DJBUNIX_FLAG_NB) ? O_NONBLOCK : 0)) ;
+  return pipe2(p, flags) ;
 }
 
 #else
 
 #include <unistd.h>
+#include <fcntl.h>
+
 #include <skalibs/djbunix.h>
 
 int pipe_internal (int *p, unsigned int flags)
 {
   int pi[2] ;
   if (pipe(pi) < 0) return -1 ;
-  if (flags & DJBUNIX_FLAG_COE)
+  if (flags & O_CLOEXEC)
     if ((coe(pi[0]) < 0) || (coe(pi[1]) < 0)) goto err ;
-  if (flags & DJBUNIX_FLAG_NB)
+  if (flags & O_NONBLOCK)
     if ((ndelay_on(pi[0]) < 0) || (ndelay_on(pi[1]) < 0)) goto err ;
   p[0] = pi[0] ; p[1] = pi[1] ;
   return 0 ;
diff --git a/src/libstddjb/socket_accept4.c b/src/libstddjb/socket_accept4.c
index 40dff91..2016777 100644
--- a/src/libstddjb/socket_accept4.c
+++ b/src/libstddjb/socket_accept4.c
@@ -6,6 +6,8 @@
 #include <netinet/in.h>
 #include <string.h>
 #include <errno.h>
+#include <fcntl.h>
+
 #include <skalibs/uint16.h>
 #include <skalibs/djbunix.h>
 #include <skalibs/socket.h>
@@ -17,15 +19,15 @@ int socket_accept4_internal (int s, char *ip, uint16_t *port, unsigned int optio
   int fd ;
   do
 #ifdef SKALIBS_HASACCEPT4
-    fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
+    fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & O_NONBLOCK) ? SOCK_NONBLOCK : 0) | ((options & O_CLOEXEC) ? SOCK_CLOEXEC : 0)) ;
 #else
     fd = accept(s, (struct sockaddr *)&sa, &dummy) ;
 #endif
   while ((fd < 0) && (errno == EINTR)) ;
   if (fd < 0) return -1 ;
 #ifndef SKALIBS_HASACCEPT4
-  if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
-   || (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
+  if ((((options & O_NONBLOCK) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
+   || (((options & O_CLOEXEC) ? coe(fd) : uncoe(fd)) < 0))
   {
     fd_close(fd) ;
     return -1 ;
diff --git a/src/libstddjb/socket_accept6.c b/src/libstddjb/socket_accept6.c
index 5bd72b4..f5156ca 100644
--- a/src/libstddjb/socket_accept6.c
+++ b/src/libstddjb/socket_accept6.c
@@ -6,6 +6,8 @@
 #include <netinet/in.h>
 #include <string.h>
 #include <errno.h>
+#include <fcntl.h>
+
 #include <skalibs/uint16.h>
 #include <skalibs/djbunix.h>
 #include <skalibs/ip46.h>
@@ -20,15 +22,15 @@ int socket_accept6_internal (int s, char *ip6, uint16_t *port, unsigned int opti
   int fd ;
   do
 #ifdef SKALIBS_HASACCEPT4
-    fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
+    fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & O_NONBLOCK) ? SOCK_NONBLOCK : 0) | ((options & O_CLOEXEC) ? SOCK_CLOEXEC : 0)) ;
 #else
     fd = accept(s, (struct sockaddr *)&sa, &dummy) ;
 #endif
   while ((fd < 0) && (errno == EINTR)) ;
   if (fd < 0) return -1 ;
 #ifndef SKALIBS_HASACCEPT4
-  if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
-   || (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
+  if ((((options & O_NONBLOCK) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
+   || (((options & O_CLOEXEC) ? coe(fd) : uncoe(fd)) < 0))
   {
     fd_close(fd) ;
     return -1 ;
diff --git a/src/libstddjb/socket_internal.c b/src/libstddjb/socket_internal.c
index 848b156..852f323 100644
--- a/src/libstddjb/socket_internal.c
+++ b/src/libstddjb/socket_internal.c
@@ -3,13 +3,16 @@
 #include <skalibs/sysdeps.h>
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
+#include <fcntl.h>
+
 #include <skalibs/djbunix.h>
+#include <skalibs/socket.h>
 
 #ifdef SKALIBS_HASACCEPT4
 
 int socket_internal (int domain, int type, int protocol, unsigned int flags)
 {
-  return socket(domain, type | ((flags & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((flags & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0), protocol) ;
+  return socket(domain, type | ((flags & O_NONBLOCK) ? SOCK_NONBLOCK : 0) | ((flags & O_CLOEXEC) ? SOCK_CLOEXEC : 0), protocol) ;
 }
 
 #else
@@ -18,8 +21,8 @@ int socket_internal (int domain, int type, int protocol, unsigned int flags)
 {
   int s = socket(domain, type, protocol) ;
   if (s == -1) return -1 ;
-  if ((((flags & DJBUNIX_FLAG_NB) ? ndelay_on(s) : ndelay_off(s)) < 0)
-   || (((flags & DJBUNIX_FLAG_COE) ? coe(s) : uncoe(s)) < 0))
+  if ((((flags & O_NONBLOCK) ? ndelay_on(s) : ndelay_off(s)) < 0)
+   || (((flags & O_CLOEXEC) ? coe(s) : uncoe(s)) < 0))
   {
     fd_close(s) ;
     return -1 ;
diff --git a/src/libstddjb/socket_tcp4.c b/src/libstddjb/socket_tcp4.c
index 8eecb67..5705af2 100644
--- a/src/libstddjb/socket_tcp4.c
+++ b/src/libstddjb/socket_tcp4.c
@@ -3,6 +3,7 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+
 #include <skalibs/socket.h>
 
 int socket_tcp4_internal (unsigned int flags)
diff --git a/src/libstddjb/socketpair_internal.c b/src/libstddjb/socketpair_internal.c
index a31228f..0cedce2 100644
--- a/src/libstddjb/socketpair_internal.c
+++ b/src/libstddjb/socketpair_internal.c
@@ -4,13 +4,16 @@
 #include <skalibs/nonposix.h>
 #include <sys/socket.h>
 #include <errno.h>
+#include <fcntl.h>
+
 #include <skalibs/djbunix.h>
+#include <skalibs/socket.h>
 
 #ifdef SKALIBS_HASACCEPT4
 
 int socketpair_internal (int domain, int type, int protocol, unsigned int flags, int *sv)
 {
-  return socketpair(domain, type | ((flags & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((flags & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0), protocol, sv) ;
+  return socketpair(domain, type | ((flags & O_NONBLOCK) ? SOCK_NONBLOCK : 0) | ((flags & O_CLOEXEC) ? SOCK_CLOEXEC : 0), protocol, sv) ;
 }
 
 #else
@@ -19,7 +22,7 @@ int socketpair_internal (int domain, int type, int protocol, unsigned int flags,
 {
   int fd[2] ;
   if (socketpair(domain, type, protocol, fd) < 0) return -1 ;
-  if (flags & DJBUNIX_FLAG_NB)
+  if (flags & O_NONBLOCK)
   {
     if (ndelay_on(fd[0]) < 0) goto err ;
     if (ndelay_on(fd[1]) < 0) goto err ;
@@ -29,7 +32,7 @@ int socketpair_internal (int domain, int type, int protocol, unsigned int flags,
     if (ndelay_off(fd[0]) < 0) goto err ;
     if (ndelay_off(fd[1]) < 0) goto err ;
   }
-  if (flags & DJBUNIX_FLAG_COE)
+  if (flags & O_CLOEXEC)
   {
     if (coe(fd[0]) < 0) goto err ;
     if (coe(fd[1]) < 0) goto err ;