Mirror of strace – the linux syscall tracer
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process_vm.c 2.9KB

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  1. /*
  2. * Copyright (c) 2012 Denys Vlasenko <vda.linux@googlemail.com>
  3. * Copyright (c) 2012-2015 Dmitry V. Levin <ldv@altlinux.org>
  4. * Copyright (c) 2014-2017 The strace developers.
  5. * All rights reserved.
  6. *
  7. * Redistribution and use in source and binary forms, with or without
  8. * modification, are permitted provided that the following conditions
  9. * are met:
  10. * 1. Redistributions of source code must retain the above copyright
  11. * notice, this list of conditions and the following disclaimer.
  12. * 2. Redistributions in binary form must reproduce the above copyright
  13. * notice, this list of conditions and the following disclaimer in the
  14. * documentation and/or other materials provided with the distribution.
  15. * 3. The name of the author may not be used to endorse or promote products
  16. * derived from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19. * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20. * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27. * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28. */
  29. #include "defs.h"
  30. SYS_FUNC(process_vm_readv)
  31. {
  32. if (entering(tcp)) {
  33. /* arg 1: pid */
  34. tprintf("%d, ", (int) tcp->u_arg[0]);
  35. } else {
  36. kernel_ulong_t local_iovcnt = tcp->u_arg[2];
  37. kernel_ulong_t remote_iovcnt = tcp->u_arg[4];
  38. kernel_ulong_t flags = tcp->u_arg[5];
  39. /* arg 2: local iov */
  40. tprint_iov_upto(tcp, local_iovcnt, tcp->u_arg[1],
  41. syserror(tcp) ? IOV_DECODE_ADDR : IOV_DECODE_STR,
  42. tcp->u_rval);
  43. /* arg 3: local iovcnt */
  44. tprintf(", %" PRI_klu ", ", local_iovcnt);
  45. /* arg 4: remote iov */
  46. tprint_iov(tcp, remote_iovcnt, tcp->u_arg[3],
  47. IOV_DECODE_ADDR);
  48. /* arg 5: remote iovcnt */
  49. /* arg 6: flags */
  50. tprintf(", %" PRI_klu ", %" PRI_klu, remote_iovcnt, flags);
  51. }
  52. return 0;
  53. }
  54. SYS_FUNC(process_vm_writev)
  55. {
  56. kernel_ulong_t local_iovcnt = tcp->u_arg[2];
  57. kernel_ulong_t remote_iovcnt = tcp->u_arg[4];
  58. kernel_ulong_t flags = tcp->u_arg[5];
  59. /* arg 1: pid */
  60. tprintf("%d, ", (int) tcp->u_arg[0]);
  61. /* arg 2: local iov */
  62. tprint_iov(tcp, local_iovcnt, tcp->u_arg[1], IOV_DECODE_STR);
  63. /* arg 3: local iovcnt */
  64. tprintf(", %" PRI_klu ", ", local_iovcnt);
  65. /* arg 4: remote iov */
  66. tprint_iov(tcp, remote_iovcnt, tcp->u_arg[3], IOV_DECODE_ADDR);
  67. /* arg 5: remote iovcnt */
  68. /* arg 6: flags */
  69. tprintf(", %" PRI_klu ", %" PRI_klu, remote_iovcnt, flags);
  70. return RVAL_DECODED;
  71. }