int setvbuf (
/* SYNOPSIS */
FILE *stream,
char *buf,
int mode,
size_t size)
/* FUNCTION
INPUTS
RESULT
NOTES
EXAMPLE
BUGS
SEE ALSO
INTERNALS
******************************************************************************/
{
fdesc *desc;
if (!stream)
{
errno = EFAULT;
return EOF;
}
switch (mode)
{
case _IOFBF: mode = BUF_FULL; break;
case _IOLBF: mode = BUF_LINE; break;
case _IONBF: mode = BUF_NONE; break;
default:
errno = EINVAL;
return EOF;
}
desc = __getfdesc(stream->fd);
if (!desc)
{
errno = EBADF;
return EOF;
}
return SetVBuf(desc->fcb->fh, buf, mode, size ? size : -1);
} /* setvbuf */
int fputs (
/* SYNOPSIS */
const char * str,
FILE * stream)
/* FUNCTION
Write a string to the specified stream.
INPUTS
str - Output this string...
fh - ...to this stream
RESULT
> 0 on success and EOF on error.
NOTES
EXAMPLE
BUGS
SEE ALSO
puts(), fputc(), putc()
INTERNALS
******************************************************************************/
{
fdesc *fdesc = __getfdesc(stream->fd);
if (!fdesc)
{
errno = EBADF;
return EOF;
}
if (!str) str = "(null)";
if (FPuts(fdesc->fcb->handle, str) == -1)
{
errno = __stdc_ioerr2errno(IoErr());
return EOF;
}
return 0;
} /* fputs */
int vfprintf (
/* SYNOPSIS */
FILE * stream,
const char * format,
va_list args)
/* FUNCTION
Format a list of arguments and print them on the specified stream.
INPUTS
stream - A stream on which one can write
format - A printf() format string.
args - A list of arguments for the format string.
RESULT
The number of characters written.
NOTES
EXAMPLE
BUGS
SEE ALSO
INTERNALS
******************************************************************************/
{
fdesc *fdesc = __getfdesc(stream->fd);
if (!fdesc)
{
errno = EBADF;
return 0;
}
return __vcformat (fdesc->fcb->fh, __putc, format, args);
} /* vfprintf */
FILE *fdopen (
/* SYNOPSIS */
int filedes,
const char *mode
)
/* FUNCTION
function associates a stream with an existing file descriptor.
INPUTS
filedes - The descriptor the stream has to be associated with
mode - The mode of the stream (same as with fopen()) must be com
patible with the mode of the file descriptor. The file
position indicator of the new stream is set to that
belonging to filedes, and the error and end-of-file indica
tors are cleared. Modes "w" or "w+" do not cause trunca
tion of the file. The file descriptor is not dup'ed, and
will be closed when the stream created by fdopen is
closed.
RESULT
NULL on error or the new stream associated with the descriptor.
The new descriptor returned by the call is the lowest numbered
descriptor currently not in use by the process.
NOTES
This function must not be used in a shared library or
in a threaded application.
EXAMPLE
BUGS
SEE ALSO
open(), fclose(), fileno()
INTERNALS
******************************************************************************/
{
int oflags, wanted_accmode, current_accmode;
fdesc *fdesc;
FILENODE *fn;
if (!(fdesc = __getfdesc(filedes)))
{
errno = EBADF;
return NULL;
}
oflags = fdesc->fcb->flags;
if (mode)
{
oflags = __smode2oflags(mode);
wanted_accmode = oflags & O_ACCMODE;
current_accmode = fdesc->fcb->flags & O_ACCMODE;
/*
Check if the requested access mode flags are a valid subset of the
flags the already open file has. Thus, if the file's access mode
is O_RDWR the requested mode can be anything (O_RDONLY, O_WRONLY or
O_RDWR), else they must match exactly.
*/
if ((current_accmode != O_RDWR) && (wanted_accmode != current_accmode))
{
errno = EINVAL;
return NULL;
}
}
fn = malloc(sizeof(FILENODE));
if (!fn) return NULL;
AddTail ((struct List *)&__stdio_files, (struct Node *)fn);
fn->File.flags = __oflags2sflags(oflags);
fn->File.fd = filedes;
return FILENODE2FILE(fn);
}
