lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | #include <errno.h> |
| 2 | #include <sys/msg.h> |
| 3 | #include "ipc.h" |
| 4 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 5 | #include "sysdep-cancel.h" |
| 6 | #else |
| 7 | #define SINGLE_THREAD_P 1 |
| 8 | #endif |
| 9 | |
| 10 | |
| 11 | #ifdef L_msgctl |
| 12 | |
| 13 | #ifdef __NR_msgctl |
| 14 | #define __NR___libc_msgctl __NR_msgctl |
| 15 | static __inline__ _syscall3(int, __libc_msgctl, int, msqid, int, cmd, struct msqid_ds *, buf) |
| 16 | #endif |
| 17 | /* Message queue control operation. */ |
| 18 | int msgctl(int msqid, int cmd, struct msqid_ds *buf) |
| 19 | { |
| 20 | #ifdef __NR_msgctl |
| 21 | return __libc_msgctl(msqid, cmd | __IPC_64, buf); |
| 22 | #else |
| 23 | return __syscall_ipc(IPCOP_msgctl, msqid, cmd | __IPC_64, 0, buf, 0); |
| 24 | #endif |
| 25 | } |
| 26 | #endif |
| 27 | |
| 28 | |
| 29 | #ifdef L_msgget |
| 30 | #ifdef __NR_msgget |
| 31 | _syscall2(int, msgget, key_t, key, int, msgflg) |
| 32 | #else |
| 33 | /* Get messages queue. */ |
| 34 | int msgget (key_t key, int msgflg) |
| 35 | { |
| 36 | return __syscall_ipc(IPCOP_msgget ,key ,msgflg ,0 ,0, 0); |
| 37 | } |
| 38 | #endif |
| 39 | #endif |
| 40 | |
| 41 | |
| 42 | struct new_msg_buf{ |
| 43 | struct msgbuf * oldmsg; |
| 44 | long int r_msgtyp; /* the fifth arg of __syscall_ipc */ |
| 45 | }; |
| 46 | /* Receive message from message queue. */ |
| 47 | |
| 48 | |
| 49 | #ifdef L_msgrcv |
| 50 | #ifdef __NR_msgrcv |
| 51 | #define __NR___syscall_msgrcv __NR_msgrcv |
| 52 | static inline _syscall5(ssize_t, __syscall_msgrcv, int, msqid, void *, msgp, |
| 53 | size_t, msgsz, long int, msgtyp, int, msgflg) |
| 54 | #endif |
| 55 | static inline ssize_t do_msgrcv (int msqid, void *msgp, size_t msgsz, |
| 56 | long int msgtyp, int msgflg) |
| 57 | { |
| 58 | #ifdef __NR_msgrcv |
| 59 | return __syscall_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); |
| 60 | #else |
| 61 | struct new_msg_buf temp; |
| 62 | |
| 63 | temp.r_msgtyp = msgtyp; |
| 64 | temp.oldmsg = msgp; |
| 65 | return __syscall_ipc(IPCOP_msgrcv ,msqid ,msgsz ,msgflg ,&temp, 0); |
| 66 | #endif |
| 67 | } |
| 68 | ssize_t msgrcv (int msqid, void *msgp, size_t msgsz, |
| 69 | long int msgtyp, int msgflg) |
| 70 | { |
| 71 | if (SINGLE_THREAD_P) |
| 72 | return do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); |
| 73 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 74 | int oldtype = LIBC_CANCEL_ASYNC (); |
| 75 | int result = do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg); |
| 76 | LIBC_CANCEL_RESET (oldtype); |
| 77 | return result; |
| 78 | #endif |
| 79 | } |
| 80 | #endif |
| 81 | |
| 82 | |
| 83 | |
| 84 | #ifdef L_msgsnd |
| 85 | #ifdef __NR_msgsnd |
| 86 | #define __NR___syscall_msgsnd __NR_msgsnd |
| 87 | static inline _syscall4(int, __syscall_msgsnd, int, msqid, const void *, msgp, |
| 88 | size_t, msgsz, int, msgflg) |
| 89 | #endif |
| 90 | /* Send message to message queue. */ |
| 91 | static inline int do_msgsnd (int msqid, const void *msgp, size_t msgsz, |
| 92 | int msgflg) |
| 93 | { |
| 94 | #ifdef __NR_msgsnd |
| 95 | return __syscall_msgsnd(msqid, msgp, msgsz, msgflg); |
| 96 | #else |
| 97 | return __syscall_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, (void *)msgp, 0); |
| 98 | #endif |
| 99 | } |
| 100 | int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg) |
| 101 | { |
| 102 | if (SINGLE_THREAD_P) |
| 103 | return do_msgsnd(msqid, msgp, msgsz, msgflg); |
| 104 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 105 | int oldtype = LIBC_CANCEL_ASYNC (); |
| 106 | int result = do_msgsnd(msqid, msgp, msgsz, msgflg); |
| 107 | LIBC_CANCEL_RESET (oldtype); |
| 108 | return result; |
| 109 | #endif |
| 110 | } |
| 111 | #endif |
| 112 | |