trunc.c 694 B

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  1. /*
  2. * This file is part of the UCB release of Plan 9. It is subject to the license
  3. * terms in the LICENSE file found in the top-level directory of this
  4. * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
  5. * part of the UCB release of Plan 9, including this file, may be copied,
  6. * modified, propagated, or distributed except according to the terms contained
  7. * in the LICENSE file.
  8. */
  9. #include <u.h>
  10. #include <libc.h>
  11. void
  12. main(int argc, int8_t **argv)
  13. {
  14. Dir d;
  15. if(argc != 3){
  16. fprint(2, "usage: trunc file size\n");
  17. exits("usage");
  18. }
  19. nulldir(&d);
  20. d.length = strtoull(argv[2], 0, 0);
  21. if(dirwstat(argv[1], &d) < 0)
  22. sysfatal("dirwstat: %r");
  23. exits(0);
  24. }