arch/x86/kernel/audit_64.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/init.h>
   3 #include <linux/types.h>
   4 #include <linux/audit.h>
   5 #include <asm/unistd.h>
   6 #include <asm/audit.h>
   7
   8 static unsigned dir_class[] = {
   9 #include <asm-generic/audit_dir_write.h>
  10 ~0U
  11 };
  12
  13 static unsigned read_class[] = {
  14 #include <asm-generic/audit_read.h>
  15 ~0U
  16 };
  17
  18 static unsigned write_class[] = {
  19 #include <asm-generic/audit_write.h>
  20 ~0U
  21 };
  22
  23 static unsigned chattr_class[] = {
  24 #include <asm-generic/audit_change_attr.h>
  25 ~0U
  26 };
  27
  28 static unsigned signal_class[] = {
  29 #include <asm-generic/audit_signal.h>
  30 ~0U
  31 };
  32
  33 int audit_classify_arch(int arch)
  34 {
  35 #ifdef CONFIG_IA32_EMULATION
  36         if (arch == AUDIT_ARCH_I386)
  37                 return 1;
  38 #endif
  39         return 0;
  40 }
  41
  42 int audit_classify_syscall(int abi, unsigned syscall)
  43 {
  44 #ifdef CONFIG_IA32_EMULATION
  45         if (abi == AUDIT_ARCH_I386)
  46                 return ia32_classify_syscall(syscall);
  47 #endif
  48         switch(syscall) {
  49         case __NR_open:
  50                 return 2;
  51         case __NR_openat:
  52                 return 3;
  53         case __NR_execve:
  54         case __NR_execveat:
  55                 return 5;
  56         default:
  57                 return 0;
  58         }
  59 }
  60
  61 static int __init audit_classes_init(void)
  62 {
  63 #ifdef CONFIG_IA32_EMULATION
  64         extern __u32 ia32_dir_class[];
  65         extern __u32 ia32_write_class[];
  66         extern __u32 ia32_read_class[];
  67         extern __u32 ia32_chattr_class[];
  68         extern __u32 ia32_signal_class[];
  69         audit_register_class(AUDIT_CLASS_WRITE_32, ia32_write_class);
  70         audit_register_class(AUDIT_CLASS_READ_32, ia32_read_class);
  71         audit_register_class(AUDIT_CLASS_DIR_WRITE_32, ia32_dir_class);
  72         audit_register_class(AUDIT_CLASS_CHATTR_32, ia32_chattr_class);
  73         audit_register_class(AUDIT_CLASS_SIGNAL_32, ia32_signal_class);
  74 #endif
  75         audit_register_class(AUDIT_CLASS_WRITE, write_class);
  76         audit_register_class(AUDIT_CLASS_READ, read_class);
  77         audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);
  78         audit_register_class(AUDIT_CLASS_CHATTR, chattr_class);
  79         audit_register_class(AUDIT_CLASS_SIGNAL, signal_class);
  80         return 0;
  81 }
  82
  83 __initcall(audit_classes_init);