File Permission Constants

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The latest version of this topic can be found at File Permission Constants.

Syntax

  
#include <sys/stat.h>

Remarks

One of these constants is required when _O_CREAT (_open, _sopen) is specified.

The pmode argument specifies the file's permission settings as follows.

Constant	Meaning
`_S_IREAD`	Reading permitted
`_S_IWRITE`	Writing permitted
`_S_IREAD` \| `_S_IWRITE`	Reading and writing permitted

When used as the pmode argument for _umask, the manifest constant sets the permission setting, as follows.

Constant	Meaning
`_S_IREAD`	Writing not permitted (file is read-only)
`_S_IWRITE`	Reading not permitted (file is write-only)
`_S_IREAD` \| `_S_IWRITE`	Neither reading nor writing permitted