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Copyright 1991 David Jurgens |
MSC: unsigned _dos_open( char *fname, unsigned mode, int *handle )
- prototype in dos.h, fcntl.h (also include share.h)
- fname = valid DOS file name
- mode = file access permission (a logical or of the following)
= O_NOINHERIT file can't be inherited by child process
= O_RDONLY file is read only
= O_RDWR file is read/write
= O_WRONLY file is write only
= SH_COMPAT file sharing compatibility mode
= SH_DENYNONE file sharing deny neither read nor write
= SH_DENYRD file sharing deny read
= SH_DENYRW file sharing deny read/write
= SH_DENYWR file sharing deny write
- handle = pointer to memory to contain handle
- does not creat files, they must currently exist (see _dos_creat())
- returns 0 on success or DOS error code
- Turbo C uses _open()
- see INT 21,3D _dos_close() _dos_read()
_dos_write() _dos_creat()
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_dos_open |
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