daemon: Enable to use FIFO on QNX

It depends on OSes if maximum size of pipe can be configured per
process or not. For example, on QNX it can be only set from pipe
resource manager. Also flags used to set the value are only supported
on Linux.
Now DaemonFIFOSize option in dlt.conf is only relevant for Linux.

Also -f option is added to build scripts to enable FIFO as IPC.

Signed-off-by: Saya Sugiura <ssugiura@jp.adit-jv.com>

1 files changed, 14 insertions, 6 deletions

diff --git a/src/daemon/dlt-daemon.c b/src/daemon/dlt-daemon.c
index c09a809..fd7d3e5 100644
--- a/src/daemon/dlt-daemon.c
+++ b/src/daemon/dlt-daemon.c
@@ -553,12 +553,6 @@ int option_file_parser(DltDaemonLocal *daemon_local)
                                 value, &(daemon_local->RingbufferStepSize)) < 0)
                             return -1;
                     }
-                    else if (strcmp(token, "DaemonFIFOSize") == 0)
-                    {
-                        if (dlt_daemon_check_numeric_setting(token,
-                                value, &(daemon_local->daemonFifoSize)) < 0)
-                            return -1;
-                    }
                     else if (strcmp(token, "SharedMemorySize") == 0)
                     {
                         daemon_local->flags.sharedMemorySize = atoi(value);
@@ -714,6 +708,15 @@ int option_file_parser(DltDaemonLocal *daemon_local)
                     }
 
 #ifdef DLT_DAEMON_USE_FIFO_IPC
+                    else if (strcmp(token, "DaemonFIFOSize") == 0)
+                    {
+                        if (dlt_daemon_check_numeric_setting(token,
+                                value, &(daemon_local->daemonFifoSize)) < 0)
+                            return -1;
+#ifndef __linux__
+                            printf("Option DaemonFIFOSize is set but only supported on Linux. Ignored.\n");
+#endif
+                    }
                     else if (strcmp(token, "DaemonFifoGroup") == 0)
                     {
                         strncpy(daemon_local->flags.daemonFifoGroup, value, NAME_MAX);
@@ -1375,11 +1378,16 @@ static int dlt_daemon_init_fifo(DltDaemonLocal *daemon_local)
         return -1;
     } /* if */
 
+#ifdef __linux__
+    /* F_SETPIPE_SZ and F_GETPIPE_SZ are only supported for Linux.
+     * For other OSes it depends on its system e.g. pipe manager.
+     */
     if (daemon_local->daemonFifoSize != 0) {
         /* Set Daemon FIFO size */
         if (fcntl(fd, F_SETPIPE_SZ, daemon_local->daemonFifoSize) == -1)
             dlt_vlog(LOG_ERR, "set FIFO size error: %s\n", strerror(errno));
     }
+#endif
 
     /* Get Daemon FIFO size */
     if ((fifo_size = fcntl(fd, F_GETPIPE_SZ, 0)) == -1)