Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 #include <linux/kernel.h>
  2 #include <linux/spinlock.h>
  3 #include <linux/list.h>
  4 #include <linux/syscalls.h>
  5 #include <linux/time.h>
  6 #include <linux/sem.h>
  7 #include <linux/msg.h>
  8 #include <linux/shm.h>
  9 #include <linux/ipc.h>
 10 #include <linux/compat.h>
 11 #include <asm/sys_ia32.h>
 12 
 13 asmlinkage long sys32_ipc(u32 call, int first, int second, int third,
 14                           compat_uptr_t ptr, u32 fifth)
 15 {
 16         int version;
 17 
 18         version = call >> 16; /* hack for backward compatibility */
 19         call &= 0xffff;
 20 
 21         switch (call) {
 22         case SEMOP:
 23                 /* struct sembuf is the same on 32 and 64bit :)) */
 24                 return sys_semtimedop(first, compat_ptr(ptr), second, NULL);
 25         case SEMTIMEDOP:
 26                 return compat_sys_semtimedop(first, compat_ptr(ptr), second,
 27                                                 compat_ptr(fifth));
 28         case SEMGET:
 29                 return sys_semget(first, second, third);
 30         case SEMCTL:
 31                 return compat_sys_semctl(first, second, third, compat_ptr(ptr));
 32 
 33         case MSGSND:
 34                 return compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
 35         case MSGRCV:
 36                 return compat_sys_msgrcv(first, second, fifth, third,
 37                                          version, compat_ptr(ptr));
 38         case MSGGET:
 39                 return sys_msgget((key_t) first, second);
 40         case MSGCTL:
 41                 return compat_sys_msgctl(first, second, compat_ptr(ptr));
 42 
 43         case SHMAT:
 44                 return compat_sys_shmat(first, second, third, version,
 45                                         compat_ptr(ptr));
 46         case SHMDT:
 47                 return sys_shmdt(compat_ptr(ptr));
 48         case SHMGET:
 49                 return sys_shmget(first, (unsigned)second, third);
 50         case SHMCTL:
 51                 return compat_sys_shmctl(first, second, compat_ptr(ptr));
 52         }
 53         return -ENOSYS;
 54 }
 55 
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