Mirror of strace – the linux syscall tracer
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mknod.c 2.4KB

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  1. /*
  2. * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
  3. * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
  4. * Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
  5. * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
  6. * Copyright (c) 2006 Ulrich Drepper <drepper@redhat.com>
  7. * Copyright (c) 2006 Bernhard Kaindl <bk@suse.de>
  8. * Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
  9. * Copyright (c) 2014-2017 The strace developers.
  10. * All rights reserved.
  11. *
  12. * Redistribution and use in source and binary forms, with or without
  13. * modification, are permitted provided that the following conditions
  14. * are met:
  15. * 1. Redistributions of source code must retain the above copyright
  16. * notice, this list of conditions and the following disclaimer.
  17. * 2. Redistributions in binary form must reproduce the above copyright
  18. * notice, this list of conditions and the following disclaimer in the
  19. * documentation and/or other materials provided with the distribution.
  20. * 3. The name of the author may not be used to endorse or promote products
  21. * derived from this software without specific prior written permission.
  22. *
  23. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24. * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25. * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32. * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33. */
  34. #include "defs.h"
  35. #include <fcntl.h>
  36. #include <sys/stat.h>
  37. static void
  38. decode_mknod(struct tcb *tcp, int offset)
  39. {
  40. unsigned short mode = tcp->u_arg[offset + 1];
  41. unsigned int dev;
  42. printpath(tcp, tcp->u_arg[offset]);
  43. tprints(", ");
  44. print_symbolic_mode_t(mode);
  45. switch (mode & S_IFMT) {
  46. case S_IFCHR:
  47. case S_IFBLK:
  48. dev = tcp->u_arg[offset + 2];
  49. tprints(", ");
  50. print_dev_t(dev);
  51. break;
  52. }
  53. }
  54. SYS_FUNC(mknod)
  55. {
  56. decode_mknod(tcp, 0);
  57. return RVAL_DECODED;
  58. }
  59. SYS_FUNC(mknodat)
  60. {
  61. print_dirfd(tcp, tcp->u_arg[0]);
  62. decode_mknod(tcp, 1);
  63. return RVAL_DECODED;
  64. }