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- /* vi: set sw=4 ts=4: */
- /*
- * __syscall_fcntl() for uClibc
- *
- * Copyright (C) 2006 Steven J. Hill <sjhill@realitydiluted.com>
- * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
- *
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- */
- #include <sys/syscall.h>
- #include <stdarg.h>
- #include <cancel.h> /* Must come before <fcntl.h>. */
- #include <fcntl.h>
- #include <bits/wordsize.h>
- int __NC(fcntl)(int fd, int cmd, long arg)
- {
- #if __WORDSIZE == 32
- if (cmd == F_GETLK64 || cmd == F_SETLK64 || cmd == F_SETLKW64) {
- # if (defined __UCLIBC_HAS_LFS__ && defined __NR_fcntl64) || !defined __NR_fcntl
- return INLINE_SYSCALL(fcntl64, 3, fd, cmd, arg);
- # else
- __set_errno(ENOSYS);
- return -1;
- # endif
- }
- #endif
- #if defined __NR_fcntl
- return INLINE_SYSCALL(fcntl, 3, fd, cmd, arg);
- #else
- __set_errno(ENOSYS);
- return -1;
- #endif
- }
- int fcntl(int fd, int cmd, ...)
- {
- va_list ap;
- long arg;
- va_start (ap, cmd);
- arg = va_arg (ap, long);
- va_end (ap);
- if (SINGLE_THREAD_P || (cmd != F_SETLKW && cmd != F_SETLKW64))
- #if defined __NR_fcntl
- return __NC(fcntl)(fd, cmd, arg);
- #else
- return INLINE_SYSCALL(fcntl64, 3, fd, cmd, arg);
- #endif
- #ifdef __NEW_THREADS
- int oldtype = LIBC_CANCEL_ASYNC ();
- #if defined __NR_fcntl
- int result = __NC(fcntl)(fd, cmd, arg);
- #else
- int result = INLINE_SYSCALL(fcntl64, 3, fd, cmd, arg);
- #endif
- LIBC_CANCEL_RESET (oldtype);
- return result;
- #endif
- }
- lt_strong_alias(fcntl)
- lt_libc_hidden(fcntl)
- #if defined __UCLIBC_HAS_LFS__ && !defined __NR_fcntl64 && __WORDSIZE == 32
- strong_alias_untyped(fcntl,fcntl64)
- lt_strong_alias(fcntl64)
- lt_libc_hidden(fcntl64)
- #endif
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