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powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC 

Commit e65e1fc2d2 ("[PATCH] syscall class hookup for all normal
targets") added generic support for AUDIT but that didn't include
support for bi-arch like powerpc.

Commit 4b58841149 ("audit: Add generic compat syscall support")
added generic support for bi-arch.

Convert powerpc to that bi-arch generic audit support.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/a4b3951d1191d4183d92a07a6097566bde60d00a.1629812058.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-08-24 13:36:13 +00:00 committed by Michael Ellerman
parent a85c728cb5
commit 566af8cda3
5 changed files with 8 additions and 135 deletions
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5
arch/powerpc/Kconfig
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@ -161,6 +161,7 @@ config PPC
select ARCH_WANT_IRQS_OFF_ACTIVATE_MM
select ARCH_WANT_LD_ORPHAN_WARN
select ARCH_WEAK_RELEASE_ACQUIRE
select AUDIT_ARCH_COMPAT_GENERIC
select BINFMT_ELF
select BUILDTIME_TABLE_SORT
select CLONE_BACKWARDS
@ -314,10 +315,6 @@ config GENERIC_TBSYNC
bool
default y if PPC32 && SMP
config AUDIT_ARCH
bool
default y
config GENERIC_BUG
bool
default y

7
arch/powerpc/include/asm/unistd32.h Normal file
View File

@ -0,0 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_POWERPC_UNISTD32_H_
#define _ASM_POWERPC_UNISTD32_H_
#include <asm/unistd_32.h>
#endif /* _ASM_POWERPC_UNISTD32_H_ */

3
arch/powerpc/kernel/Makefile
View File

@ -125,9 +125,6 @@ obj-$(CONFIG_PCI) += pci_$(BITS).o $(pci64-y) \
pci-common.o pci_of_scan.o
obj-$(CONFIG_PCI_MSI) += msi.o
obj-$(CONFIG_AUDIT) += audit.o
obj64-$(CONFIG_AUDIT) += compat_audit.o
obj-$(CONFIG_PPC_IO_WORKAROUNDS) += io-workarounds.o
obj-y += trace/

84
arch/powerpc/kernel/audit.c
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@ -1,84 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/types.h>
#include <linux/audit.h>
#include <asm/unistd.h>
static unsigned dir_class[] = {
#include <asm-generic/audit_dir_write.h>
~0U
};
static unsigned read_class[] = {
#include <asm-generic/audit_read.h>
~0U
};
static unsigned write_class[] = {
#include <asm-generic/audit_write.h>
~0U
};
static unsigned chattr_class[] = {
#include <asm-generic/audit_change_attr.h>
~0U
};
static unsigned signal_class[] = {
#include <asm-generic/audit_signal.h>
~0U
};
int audit_classify_arch(int arch)
{
#ifdef CONFIG_PPC64
if (arch == AUDIT_ARCH_PPC)
return 1;
#endif
return 0;
}
int audit_classify_syscall(int abi, unsigned syscall)
{
#ifdef CONFIG_PPC64
extern int ppc32_classify_syscall(unsigned);
if (abi == AUDIT_ARCH_PPC)
return ppc32_classify_syscall(syscall);
#endif
switch(syscall) {
case __NR_open:
return 2;
case __NR_openat:
return 3;
case __NR_socketcall:
return 4;
case __NR_execve:
return 5;
default:
return 0;
}
}
static int __init audit_classes_init(void)
{
#ifdef CONFIG_PPC64
extern __u32 ppc32_dir_class[];
extern __u32 ppc32_write_class[];
extern __u32 ppc32_read_class[];
extern __u32 ppc32_chattr_class[];
extern __u32 ppc32_signal_class[];
audit_register_class(AUDIT_CLASS_WRITE_32, ppc32_write_class);
audit_register_class(AUDIT_CLASS_READ_32, ppc32_read_class);
audit_register_class(AUDIT_CLASS_DIR_WRITE_32, ppc32_dir_class);
audit_register_class(AUDIT_CLASS_CHATTR_32, ppc32_chattr_class);
audit_register_class(AUDIT_CLASS_SIGNAL_32, ppc32_signal_class);
#endif
audit_register_class(AUDIT_CLASS_WRITE, write_class);
audit_register_class(AUDIT_CLASS_READ, read_class);
audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);
audit_register_class(AUDIT_CLASS_CHATTR, chattr_class);
audit_register_class(AUDIT_CLASS_SIGNAL, signal_class);
return 0;
}
__initcall(audit_classes_init);

44
arch/powerpc/kernel/compat_audit.c
View File

@ -1,44 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
#undef __powerpc64__
#include <asm/unistd.h>
unsigned ppc32_dir_class[] = {
#include <asm-generic/audit_dir_write.h>
~0U
};
unsigned ppc32_chattr_class[] = {
#include <asm-generic/audit_change_attr.h>
~0U
};
unsigned ppc32_write_class[] = {
#include <asm-generic/audit_write.h>
~0U
};
unsigned ppc32_read_class[] = {
#include <asm-generic/audit_read.h>
~0U
};
unsigned ppc32_signal_class[] = {
#include <asm-generic/audit_signal.h>
~0U
};
int ppc32_classify_syscall(unsigned syscall)
{
switch(syscall) {
case __NR_open:
return 2;
case __NR_openat:
return 3;
case __NR_socketcall:
return 4;
case __NR_execve:
return 5;
default:
return 1;
}
}