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https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
e54dc2431d
When auditing syscalls that send signals, log the pid and security context for each target process. Optimize the data collection by adding a counter for signal-related rules, and avoiding allocating an aux struct unless we have more than one target process. For process groups, collect pid/context data in blocks of 16. Move the audit_signal_info() hook up in check_kill_permission() so we audit attempts where permission is denied. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/audit.h>
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#include <asm/unistd.h>
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static unsigned dir_class[] = {
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#include <asm-generic/audit_dir_write.h>
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~0U
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};
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static unsigned read_class[] = {
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#include <asm-generic/audit_read.h>
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~0U
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};
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static unsigned write_class[] = {
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#include <asm-generic/audit_write.h>
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~0U
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};
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static unsigned chattr_class[] = {
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#include <asm-generic/audit_change_attr.h>
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~0U
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};
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static unsigned signal_class[] = {
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#include <asm-generic/audit_signal.h>
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~0U
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};
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int audit_classify_arch(int arch)
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{
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#ifdef CONFIG_IA32_SUPPORT
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if (arch == AUDIT_ARCH_I386)
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return 1;
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#endif
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return 0;
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}
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int audit_classify_syscall(int abi, unsigned syscall)
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{
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#ifdef CONFIG_IA32_SUPPORT
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extern int ia32_classify_syscall(unsigned);
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if (abi == AUDIT_ARCH_I386)
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return ia32_classify_syscall(syscall);
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#endif
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switch(syscall) {
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case __NR_open:
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return 2;
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case __NR_openat:
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return 3;
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case __NR_execve:
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return 5;
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default:
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return 0;
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}
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}
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static int __init audit_classes_init(void)
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{
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#ifdef CONFIG_IA32_SUPPORT
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extern __u32 ia32_dir_class[];
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extern __u32 ia32_write_class[];
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extern __u32 ia32_read_class[];
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extern __u32 ia32_chattr_class[];
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extern __u32 ia32_signal_class[];
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audit_register_class(AUDIT_CLASS_WRITE_32, ia32_write_class);
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audit_register_class(AUDIT_CLASS_READ_32, ia32_read_class);
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audit_register_class(AUDIT_CLASS_DIR_WRITE_32, ia32_dir_class);
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audit_register_class(AUDIT_CLASS_CHATTR_32, ia32_chattr_class);
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audit_register_class(AUDIT_CLASS_SIGNAL_32, ia32_signal_class);
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#endif
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audit_register_class(AUDIT_CLASS_WRITE, write_class);
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audit_register_class(AUDIT_CLASS_READ, read_class);
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audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);
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audit_register_class(AUDIT_CLASS_CHATTR, chattr_class);
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audit_register_class(AUDIT_CLASS_SIGNAL, signal_class);
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return 0;
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}
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__initcall(audit_classes_init);
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