diff options
Diffstat (limited to 'newlib/libc/sys/linux/mq_send.c')
-rw-r--r-- | newlib/libc/sys/linux/mq_send.c | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/newlib/libc/sys/linux/mq_send.c b/newlib/libc/sys/linux/mq_send.c deleted file mode 100644 index d3291fd2e..000000000 --- a/newlib/libc/sys/linux/mq_send.c +++ /dev/null @@ -1,72 +0,0 @@ -/* Copyright 2002, Red Hat Inc. */ - -#include <mqueue.h> -#include <fcntl.h> -#include <errno.h> -#include <sys/ipc.h> -#include <sys/sem.h> -#include <string.h> -#include <stdlib.h> -#define _LIBC 1 -#include <sys/lock.h> -#undef _LIBC - -#include "mqlocal.h" - -__LOCK_INIT(static, mq_wrbuf_lock); - -int -mq_send (mqd_t msgid, const char *msg, size_t msg_len, unsigned int msg_prio) -{ - struct libc_mq *info; - struct sembuf sb2 = {2, -1, 0}; - struct sembuf sb3 = {3, 1, 0}; - int rc; - int ipcflag; - - info = __find_mq (msgid); - - if (info == NULL || (info->oflag & O_ACCMODE) == O_RDONLY) - { - errno = EBADF; - return -1; - } - - if (msg_len > info->attr->mq_msgsize) - { - errno = EMSGSIZE; - return -1; - } - - if (msg_prio > MQ_PRIO_MAX) - { - errno = EINVAL; - return -1; - } - - __lock_acquire (mq_wrbuf_lock); - - memcpy (info->wrbuf->text, msg, msg_len); - info->wrbuf->type = (MQ_PRIO_MAX - msg_prio); - - ipcflag = (info->attr->mq_flags & O_NONBLOCK) ? IPC_NOWAIT : 0; - sb2.sem_flg = ipcflag; - - /* check to see if max msgs are on queue */ - rc = semop (info->semid, &sb2, 1); - - if (rc == 0) - rc = msgsnd (info->msgqid, info->wrbuf, msg_len, ipcflag); - - if (rc == 0) - semop (info->semid, &sb3, 1); /* increment number of reads */ - - __lock_release (mq_wrbuf_lock); - return rc; -} - - - - - - |