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- /* Copyright (C) 1996 DJ Delorie, see COPYING.DJ for details */
- /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
- #include <libc/stubs.h>
- #include <string.h>
- #include <fcntl.h>
- #include <errno.h>
- #include <go32.h>
- #include <dpmi.h>
- #include <io.h>
- #include <libc/dosio.h>
- #include <sys/fsext.h>
-
- int
- _open(const char* filename, int oflag)
- {
- __dpmi_regs r;
- int rv;
- int use_lfn = _USE_LFN;
-
- if (filename == 0)
- {
- errno = EINVAL;
- return -1;
- }
-
- if (__FSEXT_call_open_handlers(__FSEXT_open, &rv, &filename))
- return rv;
-
- _put_path(filename);
- if(use_lfn) {
- r.x.ax = 0x716c;
- r.x.bx = oflag & 0xff;
- r.x.dx = 1; /* Open existing file */
- r.x.si = __tb_offset;
- } else {
- r.h.ah = 0x3d;
- r.h.al = oflag;
- r.x.dx = __tb_offset;
- }
- r.x.cx = 0;
- r.x.ds = __tb_segment;
- __dpmi_int(0x21, &r);
- if(r.x.flags & 1)
- {
- errno = __doserr_to_errno(r.x.ax);
- return -1;
- }
- __file_handle_set(r.x.ax, O_BINARY);
- return r.x.ax;
- }
-