[PATCH v3 2/3] audit: add support for the openat2 syscall

The openat2(2) syscall was added in kernel v5.6 with commit fddb5d430ad9 ("open: introduce openat2(2) syscall") Add the openat2(2) syscall to the audit syscall classifier. See the github issue https://github.com/linux-audit/audit-kernel/issues/67 Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com&gt; --- arch/alpha/kernel/audit.c | 2 ++ arch/ia64/kernel/audit.c | 2 ++ arch/parisc/kernel/audit.c | 2 ++ arch/parisc/kernel/compat_audit.c | 2 ++ arch/powerpc/kernel/audit.c | 2 ++ arch/powerpc/kernel/compat_audit.c | 2 ++ arch/s390/kernel/audit.c | 2 ++ arch/s390/kernel/compat_audit.c | 2 ++ arch/sparc/kernel/audit.c | 2 ++ arch/sparc/kernel/compat_audit.c | 2 ++ arch/x86/ia32/audit.c | 2 ++ arch/x86/kernel/audit_64.c | 2 ++ include/linux/auditscm.h | 1 + kernel/auditsc.c | 3 +++ lib/audit.c | 4 ++++ lib/compat_audit.c | 4 ++++ 16 files changed, 36 insertions(+) diff --git a/arch/alpha/kernel/audit.c b/arch/alpha/kernel/audit.c index 81cbd804e375..3ab04709784a 100644 --- a/arch/alpha/kernel/audit.c +++ b/arch/alpha/kernel/audit.c @@ -42,6 +42,8 @@ int audit_classify_syscall(int abi, unsigned syscall) return AUDITSC_OPENAT; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_NATIVE; } diff --git a/arch/ia64/kernel/audit.c b/arch/ia64/kernel/audit.c index dba6a74c9ab3..ec61f20ca61f 100644 --- a/arch/ia64/kernel/audit.c +++ b/arch/ia64/kernel/audit.c @@ -43,6 +43,8 @@ int audit_classify_syscall(int abi, unsigned syscall) return AUDITSC_OPENAT; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_NATIVE; } diff --git a/arch/parisc/kernel/audit.c b/arch/parisc/kernel/audit.c index 14244e83db75..f420b5552140 100644 --- a/arch/parisc/kernel/audit.c +++ b/arch/parisc/kernel/audit.c @@ -52,6 +52,8 @@ int audit_classify_syscall(int abi, unsigned syscall) return AUDITSC_OPENAT; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_NATIVE; } diff --git a/arch/parisc/kernel/compat_audit.c b/arch/parisc/kernel/compat_audit.c index 0c181bb39f34..02cfd9d1ebeb 100644 --- a/arch/parisc/kernel/compat_audit.c +++ b/arch/parisc/kernel/compat_audit.c @@ -36,6 +36,8 @@ int parisc32_classify_syscall(unsigned syscall) return AUDITSC_OPENAT; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_COMPAT; } diff --git a/arch/powerpc/kernel/audit.c b/arch/powerpc/kernel/audit.c index 6eb18ef77dff..1bcfca5fdf67 100644 --- a/arch/powerpc/kernel/audit.c +++ b/arch/powerpc/kernel/audit.c @@ -54,6 +54,8 @@ int audit_classify_syscall(int abi, unsigned syscall) return AUDITSC_SOCKETCALL; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_NATIVE; } diff --git a/arch/powerpc/kernel/compat_audit.c b/arch/powerpc/kernel/compat_audit.c index f250777f6365..1fa0c902be8a 100644 --- a/arch/powerpc/kernel/compat_audit.c +++ b/arch/powerpc/kernel/compat_audit.c @@ -39,6 +39,8 @@ int ppc32_classify_syscall(unsigned syscall) return AUDITSC_SOCKETCALL; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_COMPAT; } diff --git a/arch/s390/kernel/audit.c b/arch/s390/kernel/audit.c index 7e331e1831d4..02051a596b87 100644 --- a/arch/s390/kernel/audit.c +++ b/arch/s390/kernel/audit.c @@ -54,6 +54,8 @@ int audit_classify_syscall(int abi, unsigned syscall) return AUDITSC_SOCKETCALL; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_NATIVE; } diff --git a/arch/s390/kernel/compat_audit.c b/arch/s390/kernel/compat_audit.c index b2a2ed5d605a..320b5e7d96f0 100644 --- a/arch/s390/kernel/compat_audit.c +++ b/arch/s390/kernel/compat_audit.c @@ -40,6 +40,8 @@ int s390_classify_syscall(unsigned syscall) return AUDITSC_SOCKETCALL; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_COMPAT; } diff --git a/arch/sparc/kernel/audit.c b/arch/sparc/kernel/audit.c index 50fab35bdaba..b092274eca79 100644 --- a/arch/sparc/kernel/audit.c +++ b/arch/sparc/kernel/audit.c @@ -55,6 +55,8 @@ int audit_classify_syscall(int abi, unsigned int syscall) return AUDITSC_SOCKETCALL; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_NATIVE; } diff --git a/arch/sparc/kernel/compat_audit.c b/arch/sparc/kernel/compat_audit.c index fdf0d70b569b..b0a7d0112b96 100644 --- a/arch/sparc/kernel/compat_audit.c +++ b/arch/sparc/kernel/compat_audit.c @@ -40,6 +40,8 @@ int sparc32_classify_syscall(unsigned int syscall) return AUDITSC_SOCKETCALL; case __NR_execve: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_COMPAT; } diff --git a/arch/x86/ia32/audit.c b/arch/x86/ia32/audit.c index d3dc8b57df81..8f6bf3a46a3a 100644 --- a/arch/x86/ia32/audit.c +++ b/arch/x86/ia32/audit.c @@ -40,6 +40,8 @@ int ia32_classify_syscall(unsigned syscall) case __NR_execve: case __NR_execveat: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_COMPAT; } diff --git a/arch/x86/kernel/audit_64.c b/arch/x86/kernel/audit_64.c index 2a6cc9c9c881..44c3601cfdc4 100644 --- a/arch/x86/kernel/audit_64.c +++ b/arch/x86/kernel/audit_64.c @@ -53,6 +53,8 @@ int audit_classify_syscall(int abi, unsigned syscall) case __NR_execve: case __NR_execveat: return AUDITSC_EXECVE; + case __NR_openat2: + return AUDITSC_OPENAT2; default: return AUDITSC_NATIVE; } diff --git a/include/linux/auditscm.h b/include/linux/auditscm.h index 1c4f0ead5931..0893c373e12b 100644 --- a/include/linux/auditscm.h +++ b/include/linux/auditscm.h @@ -16,6 +16,7 @@ enum auditsc_class_t { AUDITSC_OPENAT, AUDITSC_SOCKETCALL, AUDITSC_EXECVE, + AUDITSC_OPENAT2, AUDITSC_NVALS /* count */ }; diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 8807afa6e237..27c747e0d5ab 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -76,6 +76,7 @@ #include <linux/fsnotify_backend.h> #include <uapi/linux/limits.h> #include <uapi/linux/netfilter/nf_tables.h> +#include <uapi/linux/openat2.h> #include "audit.h" @@ -195,6 +196,8 @@ static int audit_match_perm(struct audit_context *ctx, int mask) return ((mask & AUDIT_PERM_WRITE) && ctx->argv[0] == SYS_BIND); case AUDITSC_EXECVE: return mask & AUDIT_PERM_EXEC; + case AUDITSC_OPENAT2: + return mask & ACC_MODE((u32)((struct open_how *)ctx->argv[2])->flags); default: return 0; } diff --git a/lib/audit.c b/lib/audit.c index 3ec1a94d8d64..738bda22dd39 100644 --- a/lib/audit.c +++ b/lib/audit.c @@ -60,6 +60,10 @@ int audit_classify_syscall(int abi, unsigned syscall) #endif case __NR_execve: return AUDITSC_EXECVE; +#ifdef __NR_openat2 + case __NR_openat2: + return AUDITSC_OPENAT2; +#endif default: return AUDITSC_NATIVE; } diff --git a/lib/compat_audit.c b/lib/compat_audit.c index 63125ad2edc0..7ed9461b52b7 100644 --- a/lib/compat_audit.c +++ b/lib/compat_audit.c @@ -46,6 +46,10 @@ int audit_classify_compat_syscall(int abi, unsigned syscall) #endif case __NR_execve: return AUDITSC_EXECVE; +#ifdef __NR_openat2 + case __NR_openat2: + return AUDITSC_OPENAT2; +#endif default: return AUDITSC_COMPAT; } -- 2.27.0