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authorHelge Deller <deller@gmx.de>2013-10-15 19:25:46 +0200
committerHelge Deller <deller@gmx.de>2013-11-07 22:27:20 +0100
commit527973c84077eb9273d0b2408655620de2e30136 (patch)
treed70e6bb6f4c4f1eed2dd9fcdadded6d000ad19c5 /arch/parisc/kernel
parent61dbbaeb86c2181c79efae2d186193e0f8008af1 (diff)
parisc: add kernel audit feature
Implement missing functions for parisc to provide kernel audit feature. Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/kernel')
-rw-r--r--arch/parisc/kernel/Makefile4
-rw-r--r--arch/parisc/kernel/audit.c81
-rw-r--r--arch/parisc/kernel/compat_audit.c40
-rw-r--r--arch/parisc/kernel/ptrace.c26
4 files changed, 147 insertions, 4 deletions
diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile
index 66ee3f12df58..ff87b4603e3d 100644
--- a/arch/parisc/kernel/Makefile
+++ b/arch/parisc/kernel/Makefile
@@ -29,7 +29,9 @@ obj-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_64BIT) += binfmt_elf32.o sys_parisc32.o signal32.o
obj-$(CONFIG_STACKTRACE)+= stacktrace.o
+obj-$(CONFIG_AUDIT) += audit.o
+obj64-$(CONFIG_AUDIT) += compat_audit.o
# only supported for PCX-W/U in 64-bit mode at the moment
-obj-$(CONFIG_64BIT) += perf.o perf_asm.o
+obj-$(CONFIG_64BIT) += perf.o perf_asm.o $(obj64-y)
obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
diff --git a/arch/parisc/kernel/audit.c b/arch/parisc/kernel/audit.c
new file mode 100644
index 000000000000..eb64a6148c82
--- /dev/null
+++ b/arch/parisc/kernel/audit.c
@@ -0,0 +1,81 @@
+#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_COMPAT
+ if (arch == AUDIT_ARCH_PARISC)
+ return 1;
+#endif
+ return 0;
+}
+
+int audit_classify_syscall(int abi, unsigned syscall)
+{
+#ifdef CONFIG_COMPAT
+ extern int parisc32_classify_syscall(unsigned);
+ if (abi == AUDIT_ARCH_PARISC)
+ return parisc32_classify_syscall(syscall);
+#endif
+ switch (syscall) {
+ case __NR_open:
+ return 2;
+ case __NR_openat:
+ return 3;
+ case __NR_execve:
+ return 5;
+ default:
+ return 0;
+ }
+}
+
+static int __init audit_classes_init(void)
+{
+#ifdef CONFIG_COMPAT
+ extern __u32 parisc32_dir_class[];
+ extern __u32 parisc32_write_class[];
+ extern __u32 parisc32_read_class[];
+ extern __u32 parisc32_chattr_class[];
+ extern __u32 parisc32_signal_class[];
+ audit_register_class(AUDIT_CLASS_WRITE_32, parisc32_write_class);
+ audit_register_class(AUDIT_CLASS_READ_32, parisc32_read_class);
+ audit_register_class(AUDIT_CLASS_DIR_WRITE_32, parisc32_dir_class);
+ audit_register_class(AUDIT_CLASS_CHATTR_32, parisc32_chattr_class);
+ audit_register_class(AUDIT_CLASS_SIGNAL_32, parisc32_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);
diff --git a/arch/parisc/kernel/compat_audit.c b/arch/parisc/kernel/compat_audit.c
new file mode 100644
index 000000000000..c74478f6bc74
--- /dev/null
+++ b/arch/parisc/kernel/compat_audit.c
@@ -0,0 +1,40 @@
+#include <asm/unistd.h>
+
+unsigned int parisc32_dir_class[] = {
+#include <asm-generic/audit_dir_write.h>
+~0U
+};
+
+unsigned int parisc32_chattr_class[] = {
+#include <asm-generic/audit_change_attr.h>
+~0U
+};
+
+unsigned int parisc32_write_class[] = {
+#include <asm-generic/audit_write.h>
+~0U
+};
+
+unsigned int parisc32_read_class[] = {
+#include <asm-generic/audit_read.h>
+~0U
+};
+
+unsigned int parisc32_signal_class[] = {
+#include <asm-generic/audit_signal.h>
+~0U
+};
+
+int parisc32_classify_syscall(unsigned syscall)
+{
+ switch (syscall) {
+ case __NR_open:
+ return 2;
+ case __NR_openat:
+ return 3;
+ case __NR_execve:
+ return 5;
+ default:
+ return 1;
+ }
+}
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index 534abd4936e1..e842ee233db4 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -19,6 +19,7 @@
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/signal.h>
+#include <linux/audit.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -267,11 +268,28 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
long do_syscall_trace_enter(struct pt_regs *regs)
{
+ long ret = 0;
+
if (test_thread_flag(TIF_SYSCALL_TRACE) &&
tracehook_report_syscall_entry(regs))
- return -1L;
-
- return regs->gr[20];
+ ret = -1L;
+
+#ifdef CONFIG_64BIT
+ if (!is_compat_task())
+ audit_syscall_entry(AUDIT_ARCH_PARISC64,
+ regs->gr[20],
+ regs->gr[26], regs->gr[25],
+ regs->gr[24], regs->gr[23]);
+ else
+#endif
+ audit_syscall_entry(AUDIT_ARCH_PARISC,
+ regs->gr[20] & 0xffffffff,
+ regs->gr[26] & 0xffffffff,
+ regs->gr[25] & 0xffffffff,
+ regs->gr[24] & 0xffffffff,
+ regs->gr[23] & 0xffffffff);
+
+ return ret ? : regs->gr[20];
}
void do_syscall_trace_exit(struct pt_regs *regs)
@@ -279,6 +297,8 @@ void do_syscall_trace_exit(struct pt_regs *regs)
int stepping = test_thread_flag(TIF_SINGLESTEP) ||
test_thread_flag(TIF_BLOCKSTEP);
+ audit_syscall_exit(regs);
+
if (stepping || test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, stepping);
}