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- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: write.c,v 1.1 1997/01/15 17:48:50 digulla Exp $
-
- Desc: ANSI C function write()
- Lang: english
- */
- #include <errno.h>
- #include <dos/dos.h>
- #include <dos/dosextens.h>
- #include <proto/exec.h>
- #include <proto/dos.h>
- #include "__stdio.h"
- #include "__errno.h"
-
- /*****************************************************************************
-
- NAME */
- #include <unistd.h>
-
- ssize_t write (
-
- /* SYNOPSIS */
- int fd,
- const void * buf,
- size_t count)
-
- /* FUNCTION
- Write an amount of characters to the specified file descriptor.
-
- INPUTS
- fd - The file descriptor to write to
- buf - Write these bytes into the file descriptor
- count - Write that many bytes
-
- RESULT
- The number of characters written or -1 on error.
-
- NOTES
-
- EXAMPLE
-
- BUGS
-
- SEE ALSO
-
- INTERNALS
-
- HISTORY
- 06.12.1996 digulla created
-
- ******************************************************************************/
- {
- BPTR fh;
- ssize_t cnt;
-
- switch (fd)
- {
- case 0: /* Stdin */
- errno = EINVAL;
- return EOF;
-
- case 1: /* Stdout */
- fh = Output();
-
- case 2: { /* Stderr */
- struct Process * me = (struct Process *)FindTask (NULL);
-
- fh = me->pr_CES ? me->pr_CES : me->pr_COS;
-
- break; }
-
- default: {
- FILENODE * fn;
-
- fn = GetFilenode4fd (fd);
-
- if (!fn)
- {
- errno = EINVAL;
- return EOF;
- }
-
- fh = fn->File.fh;
-
- break; }
- }
-
- cnt = Write (fh, (void *)buf, count);
-
- if (cnt == EOF)
- errno = IoErr2errno (IoErr ());
-
- return cnt;
- } /* write */
-
-