| If we try, using either open or creat, to create a file that already exists, the file's access permission bits are not changed. We can verify this by running the program from $ ls -l foo bar check permissions and sizes --w------- 1 sar 0 Feb 5 14:26 bar --w------- 1 sar 0 Feb 5 14:26 foo Note that the permissions didn't change but that the files were truncated. perror( "create function failed!" ); } umask( S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH ); if(creat( "bar" ,RWRWRW )0){ perror( "create 2 function failed " ); } return 0; } |
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