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Linux/arch/x86/kernel/audit_64.c

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  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 
  7 static unsigned dir_class[] = {
  8 #include <asm-generic/audit_dir_write.h>
  9 ~0U
 10 };
 11 
 12 static unsigned read_class[] = {
 13 #include <asm-generic/audit_read.h>
 14 ~0U
 15 };
 16 
 17 static unsigned write_class[] = {
 18 #include <asm-generic/audit_write.h>
 19 ~0U
 20 };
 21 
 22 static unsigned chattr_class[] = {
 23 #include <asm-generic/audit_change_attr.h>
 24 ~0U
 25 };
 26 
 27 static unsigned signal_class[] = {
 28 #include <asm-generic/audit_signal.h>
 29 ~0U
 30 };
 31 
 32 int audit_classify_arch(int arch)
 33 {
 34 #ifdef CONFIG_IA32_EMULATION
 35         if (arch == AUDIT_ARCH_I386)
 36                 return 1;
 37 #endif
 38         return 0;
 39 }
 40 
 41 int audit_classify_syscall(int abi, unsigned syscall)
 42 {
 43 #ifdef CONFIG_IA32_EMULATION
 44         extern int ia32_classify_syscall(unsigned);
 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);
 84 

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