coccinelle: O_NDELAY → O_NONBLOCK

Apparently O_NONBLOCK is the modern name used in most documentation and
for most cases in our sources. Let's hence replace the old alias
O_NDELAY and stick to O_NONBLOCK everywhere.

coccinelle/o-ndelay.occi

@@ -0,0 +1,4 @@
+@@
+@@
+- O_NDELAY
++ O_NONBLOCK

src/journal/journald-server.c

@@ -1497,7 +1497,8 @@ static int server_open_hostname(Server *s) {
 
         assert(s);
 
-        s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY);
+        s->hostname_fd = open("/proc/sys/kernel/hostname",
+                              O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
         if (s->hostname_fd < 0)
                 return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m");
 

src/login/logind-inhibit.c

@@ -305,7 +305,7 @@ int inhibitor_create_fifo(Inhibitor *i) {
 
         /* Open reading side */
         if (i->fifo_fd < 0) {
-                i->fifo_fd = open(i->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY);
+                i->fifo_fd = open(i->fifo_path, O_RDONLY|O_CLOEXEC|O_NONBLOCK);
                 if (i->fifo_fd < 0)
                         return -errno;
         }
@@ -321,7 +321,7 @@ int inhibitor_create_fifo(Inhibitor *i) {
         }
 
         /* Open writing side */
-        r = open(i->fifo_path, O_WRONLY|O_CLOEXEC|O_NDELAY);
+        r = open(i->fifo_path, O_WRONLY|O_CLOEXEC|O_NONBLOCK);
         if (r < 0)
                 return -errno;
 

src/login/logind-session.c

@@ -962,7 +962,7 @@ int session_create_fifo(Session *s) {
 
         /* Open reading side */
         if (s->fifo_fd < 0) {
-                s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NDELAY);
+                s->fifo_fd = open(s->fifo_path, O_RDONLY|O_CLOEXEC|O_NONBLOCK);
                 if (s->fifo_fd < 0)
                         return -errno;
 
@@ -981,7 +981,7 @@ int session_create_fifo(Session *s) {
         }
 
         /* Open writing side */
-        r = open(s->fifo_path, O_WRONLY|O_CLOEXEC|O_NDELAY);
+        r = open(s->fifo_path, O_WRONLY|O_CLOEXEC|O_NONBLOCK);
         if (r < 0)
                 return -errno;
 

src/resolve/resolved-manager.c

@@ -488,7 +488,8 @@ static int manager_watch_hostname(Manager *m) {
 
         assert(m);
 
-        m->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY);
+        m->hostname_fd = open("/proc/sys/kernel/hostname",
+                              O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
         if (m->hostname_fd < 0) {
                 log_warning_errno(errno, "Failed to watch hostname: %m");
                 return 0;

src/shared/utmp-wtmp.c

@@ -330,7 +330,7 @@ static int write_to_terminal(const char *tty, const char *message) {
         assert(tty);
         assert(message);
 
-        fd = open(tty, O_WRONLY|O_NDELAY|O_NOCTTY|O_CLOEXEC);
+        fd = open(tty, O_WRONLY|O_NONBLOCK|O_NOCTTY|O_CLOEXEC);
         if (fd < 0 || !isatty(fd))
                 return -errno;
 

src/systemctl/systemctl.c

@@ -8352,7 +8352,7 @@ static int talk_initctl(void) {
 
         request.runlevel = rl;
 
-        fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY);
+        fd = open(INIT_FIFO, O_WRONLY|O_NONBLOCK|O_CLOEXEC|O_NOCTTY);
         if (fd < 0) {
                 if (errno == ENOENT)
                         return 0;