compat.c 2.4 KB

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  1. /* compat.c: 32-bit compatibility syscall for 64-bit systems
  2. *
  3. * Copyright (C) 2004-5 Red Hat, Inc. All Rights Reserved.
  4. * Written by David Howells (dhowells@redhat.com)
  5. *
  6. * This program is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU General Public License
  8. * as published by the Free Software Foundation; either version
  9. * 2 of the License, or (at your option) any later version.
  10. */
  11. #include <linux/syscalls.h>
  12. #include <linux/keyctl.h>
  13. #include <linux/compat.h>
  14. #include "internal.h"
  15. /*****************************************************************************/
  16. /*
  17. * the key control system call, 32-bit compatibility version for 64-bit archs
  18. * - this should only be called if the 64-bit arch uses weird pointers in
  19. * 32-bit mode or doesn't guarantee that the top 32-bits of the argument
  20. * registers on taking a 32-bit syscall are zero
  21. * - if you can, you should call sys_keyctl directly
  22. */
  23. asmlinkage long compat_sys_keyctl(u32 option,
  24. u32 arg2, u32 arg3, u32 arg4, u32 arg5)
  25. {
  26. switch (option) {
  27. case KEYCTL_GET_KEYRING_ID:
  28. return keyctl_get_keyring_ID(arg2, arg3);
  29. case KEYCTL_JOIN_SESSION_KEYRING:
  30. return keyctl_join_session_keyring(compat_ptr(arg2));
  31. case KEYCTL_UPDATE:
  32. return keyctl_update_key(arg2, compat_ptr(arg3), arg4);
  33. case KEYCTL_REVOKE:
  34. return keyctl_revoke_key(arg2);
  35. case KEYCTL_DESCRIBE:
  36. return keyctl_describe_key(arg2, compat_ptr(arg3), arg4);
  37. case KEYCTL_CLEAR:
  38. return keyctl_keyring_clear(arg2);
  39. case KEYCTL_LINK:
  40. return keyctl_keyring_link(arg2, arg3);
  41. case KEYCTL_UNLINK:
  42. return keyctl_keyring_unlink(arg2, arg3);
  43. case KEYCTL_SEARCH:
  44. return keyctl_keyring_search(arg2, compat_ptr(arg3),
  45. compat_ptr(arg4), arg5);
  46. case KEYCTL_READ:
  47. return keyctl_read_key(arg2, compat_ptr(arg3), arg4);
  48. case KEYCTL_CHOWN:
  49. return keyctl_chown_key(arg2, arg3, arg4);
  50. case KEYCTL_SETPERM:
  51. return keyctl_setperm_key(arg2, arg3);
  52. case KEYCTL_INSTANTIATE:
  53. return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4,
  54. arg5);
  55. case KEYCTL_NEGATE:
  56. return keyctl_negate_key(arg2, arg3, arg4);
  57. case KEYCTL_SET_REQKEY_KEYRING:
  58. return keyctl_set_reqkey_keyring(arg2);
  59. case KEYCTL_SET_TIMEOUT:
  60. return keyctl_set_timeout(arg2, arg3);
  61. case KEYCTL_ASSUME_AUTHORITY:
  62. return keyctl_assume_authority(arg2);
  63. default:
  64. return -EOPNOTSUPP;
  65. }
  66. } /* end compat_sys_keyctl() */