1eb14bae8c
functionality except F_DUPFD to fhandler classes.
* fhandler.cc (fhandler_base::fcntl): New method.
* net.cc (fhandler_socket::fcntl): Ditto.
* fhandler.h (class fhandler_base): Add method prototype for fcntl().
(class fhandler_socket): Ditto.
50 lines
1.0 KiB
C++
50 lines
1.0 KiB
C++
/* fcntl.cc: fcntl syscall
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Copyright 1996, 1997, 1998 Cygnus Solutions.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include <fcntl.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <unistd.h>
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#include "fhandler.h"
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#include "dtable.h"
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#include "cygerrno.h"
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#include "thread.h"
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extern "C"
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int
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_fcntl (int fd, int cmd,...)
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{
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void *arg = NULL;
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va_list args;
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int res;
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if (fdtab.not_open (fd))
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{
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set_errno (EBADF);
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res = -1;
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goto done;
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}
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SetResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK, "_fcntl");
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va_start (args, cmd);
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arg = va_arg (args, void *);
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if (cmd == F_DUPFD)
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res = dup2 (fd, fdtab.find_unused_handle ((int) arg));
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else
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res = fdtab[fd]->fcntl(cmd, arg);
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va_end (args);
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ReleaseResourceLock(LOCK_FD_LIST,WRITE_LOCK|READ_LOCK,"_fcntl");
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done:
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syscall_printf ("%d = fcntl (%d, %d, %p)", res, fd, cmd, arg);
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return res;
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}
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