Re: open() and mode

["Larry Hall (RFK Partners, Inc)" <lhall at rfk dot com>]

See the FAQ entry:

Why doesn't chmod work?
http://www.cygwin.com/faq/faq_4.html#SEC42

Larry Hall                              lhall@rfk.com
RFK Partners, Inc.                      http://www.rfk.com
118 Washington Street                   (508) 893-9779 - RFK Office
Holliston, MA 01746                     (508) 893-9889 - FAX



At 03:08 PM 9/25/2001, Ivan Dobrianov wrote:
>This may have a rather obvious answer, but I can't figure it:
>
>Does anyone know why the following code creates a file with read/write
>permissions, instead of only read permissions?
>-----------------------------
>#include <stdio.h>
>#include <fcntl.h>
>#include <sys/stat.h>
>
>int main(int argc, char* argv[])
>{
>    int openflag = (O_BINARY | O_CREAT | O_EXCL | O_WRONLY);
>    mode_t mode = 0x124;
>
>    int fd = open ("delme.txt", openflag, mode);
>
>    printf("fd = %d\n", fd);
>    mode_t mask = umask(0);
>    umask(mask);
>    printf("umask = %d\n", mask);
>}
>-----------------------------
>... then .. ls -l delme.txt gives:
>
>-rw-r--r--   1 administ None            0 Sep 25 14:40 delme.txt
>
>My umask is 0. I can chmod on the file to anything I want.
>
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