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-rw-r--r--posix_api/psx_mqueue_report/mqueue_attr_report.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/posix_api/psx_mqueue_report/mqueue_attr_report.c b/posix_api/psx_mqueue_report/mqueue_attr_report.c
new file mode 100644
index 0000000..855330c
--- /dev/null
+++ b/posix_api/psx_mqueue_report/mqueue_attr_report.c
@@ -0,0 +1,48 @@
+/*
+ * Program to print default POSIX message queue attributes
+ */
+
+/*
+ * Copyright 2018 Joel Sherrill (joel@rtems.org)
+ *
+ * This file's license is 2-clause BSD as in this distribution's LICENSE.2 file.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <assert.h>
+
+#include <fcntl.h> /* For O_* constants */
+#include <sys/stat.h>
+#include <mqueue.h>
+
+static void print_attr(mqd_t mqd)
+{
+ int rc;
+ struct mq_attr attr;
+
+ rc = mq_getattr( mqd, &attr );
+ assert( rc == 0 );
+
+ printf( "mq_maxmsg: %ld\n", attr.mq_maxmsg );
+ printf( "mq_msgsize: %ld\n", attr.mq_msgsize );
+}
+
+int main()
+{
+ mqd_t mqd;
+
+ puts( "*** POSIX Message Queue Default Attributes Report ***" );
+
+ mqd = mq_open( "/testq", O_CREAT|O_RDWR, 0777, NULL );
+ if ( mqd == (mqd_t) -1 ) {
+ perror("mq_open" );
+ }
+ assert( mqd != (mqd_t) -1 );
+
+ print_attr( mqd );
+
+ puts( "*** END OF POSIX Message Queue Default Attributes Report ***" );
+ exit( 0 );
+}