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-rw-r--r--arch/i386/kernel/ptrace.c19
-rw-r--r--arch/ia64/kernel/ptrace.c21
-rw-r--r--arch/mips/kernel/ptrace.c38
-rw-r--r--arch/ppc64/kernel/ptrace.c15
-rw-r--r--arch/s390/kernel/ptrace.c21
-rw-r--r--arch/x86_64/kernel/ptrace.c13
-rw-r--r--include/linux/audit.h48
-rw-r--r--kernel/auditsc.c22
8 files changed, 139 insertions, 58 deletions
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index b2f17640ceff..5606ec7a5c2b 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -682,24 +682,18 @@ void do_syscall_trace(struct pt_regs *regs, int entryexit)
/* do the secure computing check first */
secure_computing(regs->orig_eax);
- if (unlikely(current->audit_context)) {
- if (!entryexit)
- audit_syscall_entry(current, regs->orig_eax,
- regs->ebx, regs->ecx,
- regs->edx, regs->esi);
- else
- audit_syscall_exit(current, regs->eax);
- }
+ if (unlikely(current->audit_context) && entryexit)
+ audit_syscall_exit(current, AUDITSC_RESULT(regs->eax), regs->eax);
if (!(current->ptrace & PT_PTRACED))
- return;
+ goto out;
/* Fake a debug trap */
if (test_thread_flag(TIF_SINGLESTEP))
send_sigtrap(current, regs, 0);
if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
+ goto out;
/* the 0x80 provides a way for the tracing parent to distinguish
between a syscall stop and SIGTRAP delivery */
@@ -714,4 +708,9 @@ void do_syscall_trace(struct pt_regs *regs, int entryexit)
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
+ out:
+ if (unlikely(current->audit_context) && !entryexit)
+ audit_syscall_entry(current, AUDIT_ARCH_I386, regs->orig_eax,
+ regs->ebx, regs->ecx, regs->edx, regs->esi);
+
}
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 55789fcd7210..8dde0b16d4c8 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1595,20 +1595,25 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6, long arg7,
struct pt_regs regs)
{
- long syscall;
+ if (test_thread_flag(TIF_SYSCALL_TRACE)
+ && (current->ptrace & PT_PTRACED))
+ syscall_trace();
if (unlikely(current->audit_context)) {
- if (IS_IA32_PROCESS(&regs))
+ long syscall;
+ int arch;
+
+ if (IS_IA32_PROCESS(&regs)) {
syscall = regs.r1;
- else
+ arch = AUDIT_ARCH_I386;
+ } else {
syscall = regs.r15;
+ arch = AUDIT_ARCH_IA64;
+ }
- audit_syscall_entry(current, syscall, arg0, arg1, arg2, arg3);
+ audit_syscall_entry(current, arch, syscall, arg0, arg1, arg2, arg3);
}
- if (test_thread_flag(TIF_SYSCALL_TRACE)
- && (current->ptrace & PT_PTRACED))
- syscall_trace();
}
/* "asmlinkage" so the input arguments are preserved... */
@@ -1619,7 +1624,7 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
struct pt_regs regs)
{
if (unlikely(current->audit_context))
- audit_syscall_exit(current, regs.r8);
+ audit_syscall_exit(current, AUDITSC_RESULT(regs.r10), regs.r8);
if (test_thread_flag(TIF_SYSCALL_TRACE)
&& (current->ptrace & PT_PTRACED))
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 92f2c39afe27..eaf7be9d0b0a 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -300,25 +300,38 @@ out:
return ret;
}
+static inline int audit_arch()
+{
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#ifdef CONFIG_MIPS64
+ if (!(current->thread.mflags & MF_32BIT_REGS))
+ return AUDIT_ARCH_MIPSEL64;
+#endif /* MIPS64 */
+ return AUDIT_ARCH_MIPSEL;
+
+#else /* big endian... */
+#ifdef CONFIG_MIPS64
+ if (!(current->thread.mflags & MF_32BIT_REGS))
+ return AUDIT_ARCH_MIPS64;
+#endif /* MIPS64 */
+ return AUDIT_ARCH_MIPS;
+
+#endif /* endian */
+}
+
/*
* Notification of system call entry/exit
* - triggered by current->work.syscall_trace
*/
asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
{
- if (unlikely(current->audit_context)) {
- if (!entryexit)
- audit_syscall_entry(current, regs->regs[2],
- regs->regs[4], regs->regs[5],
- regs->regs[6], regs->regs[7]);
- else
- audit_syscall_exit(current, regs->regs[2]);
- }
+ if (unlikely(current->audit_context) && entryexit)
+ audit_syscall_exit(current, AUDITSC_RESULT(regs->regs[2]), regs->regs[2]);
if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
+ goto out;
if (!(current->ptrace & PT_PTRACED))
- return;
+ goto out;
/* The 0x80 provides a way for the tracing parent to distinguish
between a syscall stop and SIGTRAP delivery */
@@ -334,4 +347,9 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
+ out:
+ if (unlikely(current->audit_context) && !entryexit)
+ audit_syscall_entry(current, audit_arch(), regs->regs[2],
+ regs->regs[4], regs->regs[5],
+ regs->regs[6], regs->regs[7]);
}
diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c
index 354a287c67eb..3c76333ec3a9 100644
--- a/arch/ppc64/kernel/ptrace.c
+++ b/arch/ppc64/kernel/ptrace.c
@@ -304,14 +304,17 @@ static void do_syscall_trace(void)
void do_syscall_trace_enter(struct pt_regs *regs)
{
+ if (test_thread_flag(TIF_SYSCALL_TRACE)
+ && (current->ptrace & PT_PTRACED))
+ do_syscall_trace();
+
if (unlikely(current->audit_context))
- audit_syscall_entry(current, regs->gpr[0],
+ audit_syscall_entry(current,
+ test_thread_flag(TIF_32BIT)?AUDIT_ARCH_PPC:AUDIT_ARCH_PPC64,
+ regs->gpr[0],
regs->gpr[3], regs->gpr[4],
regs->gpr[5], regs->gpr[6]);
- if (test_thread_flag(TIF_SYSCALL_TRACE)
- && (current->ptrace & PT_PTRACED))
- do_syscall_trace();
}
void do_syscall_trace_leave(struct pt_regs *regs)
@@ -319,7 +322,9 @@ void do_syscall_trace_leave(struct pt_regs *regs)
secure_computing(regs->gpr[0]);
if (unlikely(current->audit_context))
- audit_syscall_exit(current, regs->result);
+ audit_syscall_exit(current,
+ (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
+ regs->result);
if ((test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SINGLESTEP))
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 647233c02fc8..2d546c67f7c3 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -711,18 +711,13 @@ out:
asmlinkage void
syscall_trace(struct pt_regs *regs, int entryexit)
{
- if (unlikely(current->audit_context)) {
- if (!entryexit)
- audit_syscall_entry(current, regs->gprs[2],
- regs->orig_gpr2, regs->gprs[3],
- regs->gprs[4], regs->gprs[5]);
- else
- audit_syscall_exit(current, regs->gprs[2]);
- }
+ if (unlikely(current->audit_context) && entryexit)
+ audit_syscall_exit(current, AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);
+
if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
+ goto out;
if (!(current->ptrace & PT_PTRACED))
- return;
+ goto out;
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
@@ -735,4 +730,10 @@ syscall_trace(struct pt_regs *regs, int entryexit)
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
+ out:
+ if (unlikely(current->audit_context) && !entryexit)
+ audit_syscall_entry(current,
+ test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
+ regs->gprs[2], regs->orig_gpr2, regs->gprs[3],
+ regs->gprs[4], regs->gprs[5]);
}
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index c7011675007d..ecbccbbf5c2a 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -629,25 +629,28 @@ static void syscall_trace(struct pt_regs *regs)
}
}
+#define audit_arch() (test_thread_flag(TIF_IA32) ? AUDIT_ARCH_I386 : AUDIT_ARCH_X86_64)
+
asmlinkage void syscall_trace_enter(struct pt_regs *regs)
{
/* do the secure computing check first */
secure_computing(regs->orig_rax);
+ if (test_thread_flag(TIF_SYSCALL_TRACE)
+ && (current->ptrace & PT_PTRACED))
+ syscall_trace(regs);
+
if (unlikely(current->audit_context))
- audit_syscall_entry(current, regs->orig_rax,
+ audit_syscall_entry(current, audit_arch(), regs->orig_rax,
regs->rdi, regs->rsi,
regs->rdx, regs->r10);
- if (test_thread_flag(TIF_SYSCALL_TRACE)
- && (current->ptrace & PT_PTRACED))
- syscall_trace(regs);
}
asmlinkage void syscall_trace_leave(struct pt_regs *regs)
{
if (unlikely(current->audit_context))
- audit_syscall_exit(current, regs->rax);
+ audit_syscall_exit(current, AUDITSC_RESULT(regs->rax), regs->rax);
if ((test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SINGLESTEP))
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 9b77992c4888..fad0c1dc21a9 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -24,6 +24,9 @@
#ifndef _LINUX_AUDIT_H_
#define _LINUX_AUDIT_H_
+#include <linux/sched.h>
+#include <linux/elf.h>
+
/* Request and reply types */
#define AUDIT_GET 1000 /* Get status */
#define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */
@@ -67,6 +70,7 @@
#define AUDIT_FSGID 8
#define AUDIT_LOGINUID 9
#define AUDIT_PERS 10
+#define AUDIT_ARCH 11
/* These are ONLY useful when checking
* at syscall exit time (AUDIT_AT_EXIT). */
@@ -96,6 +100,38 @@
#define AUDIT_FAIL_PRINTK 1
#define AUDIT_FAIL_PANIC 2
+/* distinguish syscall tables */
+#define __AUDIT_ARCH_64BIT 0x80000000
+#define __AUDIT_ARCH_LE 0x40000000
+#define AUDIT_ARCH_ALPHA (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_ARMEB (EM_ARM)
+#define AUDIT_ARCH_CRIS (EM_CRIS|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_FRV (EM_FRV)
+#define AUDIT_ARCH_H8300 (EM_H8_300)
+#define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_M32R (EM_M32R)
+#define AUDIT_ARCH_M68K (EM_68K)
+#define AUDIT_ARCH_MIPS (EM_MIPS)
+#define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_MIPSEL64 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_PARISC (EM_PARISC)
+#define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_PPC (EM_PPC)
+#define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_S390 (EM_S390)
+#define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_SH (EM_SH)
+#define AUDIT_ARCH_SHEL (EM_SH|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_SPARC (EM_SPARC)
+#define AUDIT_ARCH_SPARC64 (EM_SPARC64|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_V850 (EM_V850|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+
#ifndef __KERNEL__
struct audit_message {
struct nlmsghdr nlh;
@@ -129,15 +165,19 @@ struct audit_buffer;
struct audit_context;
struct inode;
+#define AUDITSC_INVALID 0
+#define AUDITSC_SUCCESS 1
+#define AUDITSC_FAILURE 2
+#define AUDITSC_RESULT(x) ( ((long)(x))<0?AUDITSC_FAILURE:AUDITSC_SUCCESS )
#ifdef CONFIG_AUDITSYSCALL
/* These are defined in auditsc.c */
/* Public API */
extern int audit_alloc(struct task_struct *task);
extern void audit_free(struct task_struct *task);
-extern void audit_syscall_entry(struct task_struct *task,
+extern void audit_syscall_entry(struct task_struct *task, int arch,
int major, unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3);
-extern void audit_syscall_exit(struct task_struct *task, int return_code);
+extern void audit_syscall_exit(struct task_struct *task, int failed, long return_code);
extern void audit_getname(const char *name);
extern void audit_putname(const char *name);
extern void audit_inode(const char *name, const struct inode *inode);
@@ -153,8 +193,8 @@ extern int audit_ipc_perms(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mo
#else
#define audit_alloc(t) ({ 0; })
#define audit_free(t) do { ; } while (0)
-#define audit_syscall_entry(t,a,b,c,d,e) do { ; } while (0)
-#define audit_syscall_exit(t,r) do { ; } while (0)
+#define audit_syscall_entry(t,ta,a,b,c,d,e) do { ; } while (0)
+#define audit_syscall_exit(t,f,r) do { ; } while (0)
#define audit_getname(n) do { ; } while (0)
#define audit_putname(n) do { ; } while (0)
#define audit_inode(n,i) do { ; } while (0)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 00e87ffff13b..77e92592de57 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -123,7 +123,7 @@ struct audit_context {
int major; /* syscall number */
unsigned long argv[4]; /* syscall arguments */
int return_valid; /* return code is valid */
- int return_code;/* syscall return code */
+ long return_code;/* syscall return code */
int auditable; /* 1 if record should be written */
int name_count;
struct audit_names names[AUDIT_NAMES];
@@ -135,6 +135,7 @@ struct audit_context {
uid_t uid, euid, suid, fsuid;
gid_t gid, egid, sgid, fsgid;
unsigned long personality;
+ int arch;
#if AUDIT_DEBUG
int put_count;
@@ -348,6 +349,10 @@ static int audit_filter_rules(struct task_struct *tsk,
case AUDIT_PERS:
result = (tsk->personality == value);
break;
+ case AUDIT_ARCH:
+ if (ctx)
+ result = (ctx->arch == value);
+ break;
case AUDIT_EXIT:
if (ctx && ctx->return_valid)
@@ -355,7 +360,7 @@ static int audit_filter_rules(struct task_struct *tsk,
break;
case AUDIT_SUCCESS:
if (ctx && ctx->return_valid)
- result = (ctx->return_code >= 0);
+ result = (ctx->return_valid == AUDITSC_SUCCESS);
break;
case AUDIT_DEVMAJOR:
if (ctx) {
@@ -648,8 +653,11 @@ static void audit_log_exit(struct audit_context *context)
audit_log_format(ab, "syscall=%d", context->major);
if (context->personality != PER_LINUX)
audit_log_format(ab, " per=%lx", context->personality);
+ audit_log_format(ab, " arch=%x", context->arch);
if (context->return_valid)
- audit_log_format(ab, " exit=%d", context->return_code);
+ audit_log_format(ab, " success=%s exit=%ld",
+ (context->return_valid==AUDITSC_SUCCESS)?"yes":"no",
+ context->return_code);
audit_log_format(ab,
" a0=%lx a1=%lx a2=%lx a3=%lx items=%d"
" pid=%d loginuid=%d uid=%d gid=%d"
@@ -773,7 +781,7 @@ static inline unsigned int audit_serial(void)
* then the record will be written at syscall exit time (otherwise, it
* will only be written if another part of the kernel requests that it
* be written). */
-void audit_syscall_entry(struct task_struct *tsk, int major,
+void audit_syscall_entry(struct task_struct *tsk, int arch, int major,
unsigned long a1, unsigned long a2,
unsigned long a3, unsigned long a4)
{
@@ -827,6 +835,7 @@ void audit_syscall_entry(struct task_struct *tsk, int major,
if (!audit_enabled)
return;
+ context->arch = arch;
context->major = major;
context->argv[0] = a1;
context->argv[1] = a2;
@@ -850,13 +859,13 @@ void audit_syscall_entry(struct task_struct *tsk, int major,
* filtering, or because some other part of the kernel write an audit
* message), then write out the syscall information. In call cases,
* free the names stored from getname(). */
-void audit_syscall_exit(struct task_struct *tsk, int return_code)
+void audit_syscall_exit(struct task_struct *tsk, int valid, long return_code)
{
struct audit_context *context;
get_task_struct(tsk);
task_lock(tsk);
- context = audit_get_context(tsk, 1, return_code);
+ context = audit_get_context(tsk, valid, return_code);
task_unlock(tsk);
/* Not having a context here is ok, since the parent may have
@@ -869,6 +878,7 @@ void audit_syscall_exit(struct task_struct *tsk, int return_code)
context->in_syscall = 0;
context->auditable = 0;
+
if (context->previous) {
struct audit_context *new_context = context->previous;
context->previous = NULL;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.