/* * mq_receive.c - functions for receiving from message queue. */ #include <errno.h> #include <stddef.h> #include <sys/syscall.h> #include <mqueue.h> #ifdef __NR_mq_timedreceive #define __NR___syscall_mq_timedreceive __NR_mq_timedreceive static _syscall5(int, __syscall_mq_timedreceive, int, mqdes, char *, msg_ptr, size_t, msg_len, unsigned int *, msg_prio, const void *, abs_timeout) # if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__ /* * Receive the oldest from highest priority messages. * Stop waiting if abs_timeout expires. */ ssize_t mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned int *msg_prio, const struct timespec *abs_timeout) { return __syscall_mq_timedreceive(mqdes, msg_ptr, msg_len, msg_prio, abs_timeout); } # endif /* Receive the oldest from highest priority messages */ ssize_t mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned int *msg_prio) { return __syscall_mq_timedreceive(mqdes, msg_ptr, msg_len, msg_prio, NULL); } #elif defined __UCLIBC_HAS_STUBS__ # if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__ ssize_t mq_timedreceive(mqd_t mqdes attribute_unused, char *msg_ptr attribute_unused, size_t msg_len attribute_unused, unsigned int *msg_prio attribute_unused, const struct timespec *abs_timeout attribute_unused) { __set_errno(ENOSYS); return -1; } # endif ssize_t mq_receive(mqd_t mqdes attribute_unused, char *msg_ptr attribute_unused, size_t msg_len attribute_unused, unsigned int *msg_prio attribute_unused) { __set_errno(ENOSYS); return -1; } #endif