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File Permission Constants

#include <sys/stat.h>

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

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