1 /* Copyright (C) 2000, 2002, 2003, 2004, 2009 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #include <sysdep-cancel.h> /* Must come before <fcntl.h>. */
25 #include <sys/syscall.h>
26 #include <kernel-features.h>
29 #ifdef __ASSUME_F_GETOWN_EX
30 # define miss_F_GETOWN_EX 0
32 static int miss_F_GETOWN_EX
;
37 do_fcntl (int fd
, int cmd
, void *arg
)
39 if (cmd
!= F_GETOWN
|| miss_F_GETOWN_EX
)
40 return INLINE_SYSCALL (fcntl
, 3, fd
, cmd
, arg
);
42 INTERNAL_SYSCALL_DECL (err
);
43 struct f_owner_ex fex
;
44 int res
= INTERNAL_SYSCALL (fcntl
, err
, 3, fd
, F_GETOWN_EX
, &fex
);
45 if (!INTERNAL_SYSCALL_ERROR_P (res
, err
))
46 return fex
.type
== F_OWNER_GID
? -fex
.pid
: fex
.pid
;
48 #ifndef __ASSUME_F_GETOWN_EX
49 if (INTERNAL_SYSCALL_ERRNO (res
, err
) == EINVAL
)
51 res
= INLINE_SYSCALL (fcntl
, 3, fd
, F_GETOWN
, arg
);
57 __set_errno (INTERNAL_SYSCALL_ERRNO (res
, err
));
62 #ifndef NO_CANCELLATION
64 __fcntl_nocancel (int fd
, int cmd
, ...)
70 arg
= va_arg (ap
, void *);
73 return do_fcntl (fd
, cmd
, arg
);
79 __libc_fcntl (int fd
, int cmd
, ...)
85 arg
= va_arg (ap
, void *);
88 if (SINGLE_THREAD_P
|| cmd
!= F_SETLKW
)
89 return do_fcntl (fd
, cmd
, arg
);
91 int oldtype
= LIBC_CANCEL_ASYNC ();
93 int result
= do_fcntl (fd
, cmd
, arg
);
95 LIBC_CANCEL_RESET (oldtype
);
99 libc_hidden_def (__libc_fcntl
)
101 weak_alias (__libc_fcntl
, __fcntl
)
102 libc_hidden_weak (__fcntl
)
103 weak_alias (__libc_fcntl
, fcntl
)