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| 1 #include <sys/sem.h> | 1 #include <sys/sem.h> | 
| 2 #include <stdarg.h> | 2 #include <stdarg.h> | 
| 3 #include "syscall.h" | 3 #include "syscall.h" | 
| 4 #include "ipc.h" | 4 #include "ipc.h" | 
| 5 | 5 | 
| 6 union semun { | 6 union semun { | 
| 7 »       int val; | 7   int val; | 
| 8 »       struct semid_ds *buf; | 8   struct semid_ds* buf; | 
| 9 »       unsigned short *array; | 9   unsigned short* array; | 
| 10 }; | 10 }; | 
| 11 | 11 | 
| 12 int semctl(int id, int num, int cmd, ...) | 12 int semctl(int id, int num, int cmd, ...) { | 
| 13 { | 13   union semun arg = {0}; | 
| 14 »       union semun arg = {0}; | 14   va_list ap; | 
| 15 »       va_list ap; | 15   switch (cmd) { | 
| 16 »       switch (cmd) { | 16     case SETVAL: | 
| 17 »       case SETVAL: case GETALL: case SETALL: case IPC_STAT: case IPC_SET: | 17     case GETALL: | 
| 18 »       case IPC_INFO: case SEM_INFO: case SEM_STAT: | 18     case SETALL: | 
| 19 »       »       va_start(ap, cmd); | 19     case IPC_STAT: | 
| 20 »       »       arg = va_arg(ap, union semun); | 20     case IPC_SET: | 
| 21 »       »       va_end(ap); | 21     case IPC_INFO: | 
| 22 »       } | 22     case SEM_INFO: | 
|  | 23     case SEM_STAT: | 
|  | 24       va_start(ap, cmd); | 
|  | 25       arg = va_arg(ap, union semun); | 
|  | 26       va_end(ap); | 
|  | 27   } | 
| 23 #ifdef SYS_semctl | 28 #ifdef SYS_semctl | 
| 24 »       return syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf); | 29   return syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf); | 
| 25 #else | 30 #else | 
| 26 »       return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg.buf); | 31   return syscall(SYS_ipc, IPCOP_semctl, id, num, cmd | IPC_64, &arg.buf); | 
| 27 #endif | 32 #endif | 
| 28 } | 33 } | 
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