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Finish the implementation for message send, and receive. Implement their IPC_NOWAIT behaviour.

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This commit is contained in:
Enrico Fraccaroli (Galfurian)
2023-06-08 17:06:42 -04:00
parent f515c44eb3
commit c17153318c
3 changed files with 103 additions and 10 deletions
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libc/src/sys/ipc.c
+25 -4
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@@ -3,6 +3,7 @@
/// @copyright (c) 2014-2023 This file is distributed under the MIT License.
/// See LICENSE.md for details.
#include "sys/ipc.h"
#include "sys/unistd.h"
#include "sys/errno.h"
#include "sys/stat.h"
@@ -33,12 +34,32 @@ _syscall4(long, semctl, int, semid, int, semnum, int, cmd, union semun *, arg)
_syscall2(int, msgget, key_t, key, int, msgflg)
_syscall4(int, msgsnd, int, msqid, const void *, msgp, size_t, msgsz, int, msgflg)
_syscall5(ssize_t, msgrcv, int, msqid, void *, msgp, size_t, msgsz, long, msgtyp, int, msgflg)
_syscall3(int, msgctl, int, msqid, int, cmd, struct msqid_ds *, buf)
int msgsnd(int msqid, const void *msgp, size_t msgsz, int msgflg)
{
long __res;
do {
__inline_syscall4(__res, msgsnd, msqid, msgp, msgsz, msgflg);
if (!(msgflg & IPC_NOWAIT) && (__res == -EAGAIN))
continue;
break;
} while (1);
__syscall_return(int, __res);
}
ssize_t msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg)
{
long __res;
do {
__inline_syscall5(__res, msgrcv, msqid, msgp, msgsz, msgtyp, msgflg);
if (!(msgflg & IPC_NOWAIT) && ((__res == -EAGAIN) || (__res == -ENOMSG)))
continue;
break;
} while (1);
__syscall_return(int, __res);
}
long semop(int semid, struct sembuf *sops, unsigned nsops)
{
struct sembuf *op;