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Copyright 1991 David Jurgens |
TC: int _open( const char *path, int access )
- prototype in io.h, also include fcntl.h
- this function will not create a file, use _creat() if it doesn't
currently exist
- access is a combination of the following:
DOS 2.0+ Attributes
O_RDONLY open read only
O_WRONLY open write only
O_RDWR open read/write
DOS 3.1+ Attributes
O_NOINHERIT file is not to be passed to child processes
O_DENYALL file is not accessible to others (exclusive)
O_DENYWRITE file is read only to all other opens
O_DENYREAD file is write only to all other opens
O_DENYNONE file is to be shared by all
- MS C uses _dos_open()
- see INT 21,3D open() _creat()
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_open |
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