[PATCH v3 0/3] audit: add support for openat2

Richard Guy Briggs
2021-04-30T20:36:40Z

The openat2(2) syscall was added in v5.6. Add support for openat2 to the
audit syscall classifier and for recording openat2 parameters that cannot
be captured in the syscall parameters of the SYSCALL record.

Supporting userspace code can be found in
https://github.com/rgbriggs/audit-userspace/tree/ghau-openat2

Supporting test case can be found in
https://github.com/linux-audit/audit-testsuite/pull/103

Changelog:
v3:
- re-add commit descriptions that somehow got dropped
- add new file to MAINTAINERS

v2:
- add include/linux/auditscm.h for audit syscall class macros due to syscall redefinition warnings:
arch/x86/ia32/audit.c:3:
./include/linux/audit.h:12,
./include/linux/sched.h:22,
./include/linux/seccomp.h:21,
./arch/x86/include/asm/seccomp.h:5,
./arch/x86/include/asm/unistd.h:20,
./arch/x86/include/generated/uapi/asm/unistd_64.h:4: warning: "__NR_read" redefined #define __NR_read 0
...
./arch/x86/include/generated/uapi/asm/unistd_64.h:338: warning: "__NR_rseq" redefined #define __NR_rseq 334
previous:
arch/x86/ia32/audit.c:2:
./arch/x86/include/generated/uapi/asm/unistd_32.h:7: note: this is the location of the previous definition #define __NR_read 3
...
./arch/x86/include/generated/uapi/asm/unistd_32.h:386: note: this is the location of the previous definition #define __NR_rseq 386

Richard Guy Briggs (3):
audit: replace magic audit syscall class numbers with macros
audit: add support for the openat2 syscall
audit: add OPENAT2 record to list how

MAINTAINERS | 1 +
arch/alpha/kernel/audit.c | 10 ++++++----
arch/ia64/kernel/audit.c | 10 ++++++----
arch/parisc/kernel/audit.c | 10 ++++++----
arch/parisc/kernel/compat_audit.c | 11 +++++++----
arch/powerpc/kernel/audit.c | 12 +++++++-----
arch/powerpc/kernel/compat_audit.c | 13 ++++++++-----
arch/s390/kernel/audit.c | 12 +++++++-----
arch/s390/kernel/compat_audit.c | 13 ++++++++-----
arch/sparc/kernel/audit.c | 12 +++++++-----
arch/sparc/kernel/compat_audit.c | 13 ++++++++-----
arch/x86/ia32/audit.c | 13 ++++++++-----
arch/x86/kernel/audit_64.c | 10 ++++++----
fs/open.c | 2 ++
include/linux/audit.h | 11 +++++++++++
include/linux/auditscm.h | 24 +++++++++++++++++++++++
include/uapi/linux/audit.h | 1 +
kernel/audit.h | 2 ++
kernel/auditsc.c | 31 ++++++++++++++++++++++++------
lib/audit.c | 14 +++++++++-----
lib/compat_audit.c | 15 ++++++++++-----
21 files changed, 169 insertions(+), 71 deletions(-)
create mode 100644 include/linux/auditscm.h

--
2.27.0