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shmget: Permission Denied

158 New Member
Hello Bytes,

Computer Type: Debian Lenny Linux x86

I am trying to use shmget to create a block of shared memory. I managed to get that working fine, I run the program always in root.

My problem though is when I want a user that is non-root to access the block I keep getting Permission Denied error.

I set the S_IWOTH so that other users can access the block it doesn't seem to be working.

Am I doing something wrong?

Expand|Select|Wrap|Line Numbers
  1. key = ftok("21312", 'R');
  2.     if ((shmid = shmget(key, 1024,IPC_CREAT | S_IWOTH)) < 0) {
  3.         perror("shmget");
  4.         exit(1);
  5.     }
  6.  
Jun 23 '10 #1
0 1744

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