#include <sys/stat.h>
Remarks
These constants are used to indicate file type in the st_mode field of the _stat structure.
The bit mask constants are described below:
| Constant | Meaning |
| _S_IFMT | File type mask |
| _S_IFDIR | Directory |
| _S_IFCHR | Character special (indicates a device if set) |
| _S_IFREG | Regular |
| _S_IREAD | Read permission, owner |
| _S_IWRITE | Write permission, owner |
| _S_IEXEC | Execute/search permission, owner |
See Also _stat, _fstat, Standard Types