librt/mq_getsetattr.c

   1 /*
   2  * mq_getattr.c - get message queue attributes.
   3  */
   4
   5 #include <errno.h>
   6 #include <stddef.h>
   7 #include <sys/syscall.h>
   8
   9 #include <mqueue.h>
  10
  11 #ifdef __NR_mq_getsetattr
  12
  13 librt_hidden_proto(mq_setattr)
  14 #define __NR___syscall_mq_getsetattr __NR_mq_getsetattr
  15 static __inline__ _syscall3(int, __syscall_mq_getsetattr, int, mqdes,
  16                         const void *, mqstat, void *, omqstat);
  17
  18 /*
  19  * Set attributes associated with message queue (and possibly also get
  20  * its old attributes)
  21  */
  22 int mq_setattr(mqd_t mqdes, const struct mq_attr *mqstat,
  23                struct mq_attr *omqstat)
  24 {
  25         return __syscall_mq_getsetattr(mqdes, mqstat, omqstat);
  26 }
  27
  28 librt_hidden_def(mq_setattr)
  29
  30 /* Query status and attributes of message queue */
  31 int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat)
  32 {
  33         return mq_setattr(mqdes, NULL, mqstat);
  34 }
  35
  36 #endif