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Added source for F_DUPFD.

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This commit is contained in:
Jennifer Averett
1998-12-03 22:17:26 +00:00
parent 7a3878b26f
commit 5822f437a1
3 changed files with 54 additions and 36 deletions
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30
c/src/exec/libcsupport/src/fcntl.c
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@@ -27,6 +27,8 @@ int fcntl(
{
va_list ap;
rtems_libio_t *iop;
rtems_libio_t *diop;
int fd2;
va_start( ap, cmd );
@@ -50,18 +52,22 @@ int fcntl(
switch ( cmd ) {
case F_DUPFD: /* dup */
/*
* This is how it appears that this case should work:
*
* filedes2 = va_arg( ap, int )
* if filedes2 is 0
* duplicate fd into a new descriptor
* else
* duplicate fd into specified descriptor after error checking it
*
* See dup2() in case we can eliminate stuff in there.
*/
return -1;
fd2 = va_arg( ap, int );
if ( fd2 )
diop = rtems_libio_iop( fd2 );
else {
/* allocate a file control block */
diop = rtems_libio_allocate();
if ( diop == 0 )
return -1;
}
diop->handlers = iop->handlers;
diop->file_info = iop->file_info;
diop->flags = iop->flags;
diop->pathinfo = iop->pathinfo;
return 0;
case F_GETFD: /* get f_flags */
if ( iop->flags & LIBIO_FLAGS_CLOSE_ON_EXEC )

30
c/src/lib/libc/fcntl.c
View File

@@ -27,6 +27,8 @@ int fcntl(
{
va_list ap;
rtems_libio_t *iop;
rtems_libio_t *diop;
int fd2;
va_start( ap, cmd );
@@ -50,18 +52,22 @@ int fcntl(
switch ( cmd ) {
case F_DUPFD: /* dup */
/*
* This is how it appears that this case should work:
*
* filedes2 = va_arg( ap, int )
* if filedes2 is 0
* duplicate fd into a new descriptor
* else
* duplicate fd into specified descriptor after error checking it
*
* See dup2() in case we can eliminate stuff in there.
*/
return -1;
fd2 = va_arg( ap, int );
if ( fd2 )
diop = rtems_libio_iop( fd2 );
else {
/* allocate a file control block */
diop = rtems_libio_allocate();
if ( diop == 0 )
return -1;
}
diop->handlers = iop->handlers;
diop->file_info = iop->file_info;
diop->flags = iop->flags;
diop->pathinfo = iop->pathinfo;
return 0;
case F_GETFD: /* get f_flags */
if ( iop->flags & LIBIO_FLAGS_CLOSE_ON_EXEC )