open.c 1.5 KB

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  1. /* Linux open syscall implementation, non-LFS.
  2. Copyright (C) 2017-2019 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
  5. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public
  7. License as published by the Free Software Foundation; either
  8. 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.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library. If not, see
  15. <http://www.gnu.org/licenses/>. */
  16. #include <sys/types.h>
  17. #include <sys/stat.h>
  18. #include <fcntl.h>
  19. #include <stdarg.h>
  20. #include <sysdep-cancel.h>
  21. #ifndef __OFF_T_MATCHES_OFF64_T
  22. /* Open FILE with access OFLAG. If O_CREAT or O_TMPFILE is in OFLAG,
  23. a third argument is the file protection. */
  24. int
  25. __libc_open (const char *file, int oflag, ...)
  26. {
  27. int mode = 0;
  28. if (__OPEN_NEEDS_MODE (oflag))
  29. {
  30. va_list arg;
  31. va_start (arg, oflag);
  32. mode = va_arg (arg, int);
  33. va_end (arg);
  34. }
  35. return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag, mode);
  36. }
  37. libc_hidden_def (__libc_open)
  38. weak_alias (__libc_open, __open)
  39. libc_hidden_weak (__open)
  40. weak_alias (__libc_open, open)
  41. #endif