linux/arch/s390/include/asm/syscall.h
Linus Torvalds 02aff8db64 audit/stable-5.2 PR 20190507
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Merge tag 'audit-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit updates from Paul Moore:
 "We've got a reasonably broad set of audit patches for the v5.2 merge
  window, the highlights are below:

   - The biggest change, and the source of all the arch/* changes, is
     the patchset from Dmitry to help enable some of the work he is
     doing around PTRACE_GET_SYSCALL_INFO.

     To be honest, including this in the audit tree is a bit of a
     stretch, but it does help move audit a little further along towards
     proper syscall auditing for all arches, and everyone else seemed to
     agree that audit was a "good" spot for this to land (or maybe they
     just didn't want to merge it? dunno.).

   - We can now audit time/NTP adjustments.

   - We continue the work to connect associated audit records into a
     single event"

* tag 'audit-pr-20190507' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: (21 commits)
  audit: fix a memory leak bug
  ntp: Audit NTP parameters adjustment
  timekeeping: Audit clock adjustments
  audit: purge unnecessary list_empty calls
  audit: link integrity evm_write_xattrs record to syscall event
  syscall_get_arch: add "struct task_struct *" argument
  unicore32: define syscall_get_arch()
  Move EM_UNICORE to uapi/linux/elf-em.h
  nios2: define syscall_get_arch()
  nds32: define syscall_get_arch()
  Move EM_NDS32 to uapi/linux/elf-em.h
  m68k: define syscall_get_arch()
  hexagon: define syscall_get_arch()
  Move EM_HEXAGON to uapi/linux/elf-em.h
  h8300: define syscall_get_arch()
  c6x: define syscall_get_arch()
  arc: define syscall_get_arch()
  Move EM_ARCOMPACT and EM_ARCV2 to uapi/linux/elf-em.h
  audit: Make audit_log_cap and audit_copy_inode static
  audit: connect LOGIN record to its syscall record
  ...
2019-05-07 19:06:04 -07:00

91 lines
2.0 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Access to user system call parameters and results
*
* Copyright IBM Corp. 2008
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
#ifndef _ASM_SYSCALL_H
#define _ASM_SYSCALL_H 1
#include <uapi/linux/audit.h>
#include <linux/sched.h>
#include <linux/err.h>
#include <asm/ptrace.h>
extern const unsigned long sys_call_table[];
extern const unsigned long sys_call_table_emu[];
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return test_pt_regs_flag(regs, PIF_SYSCALL) ?
(regs->int_code & 0xffff) : -1;
}
static inline void syscall_rollback(struct task_struct *task,
struct pt_regs *regs)
{
regs->gprs[2] = regs->orig_gpr2;
}
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
return IS_ERR_VALUE(regs->gprs[2]) ? regs->gprs[2] : 0;
}
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)
{
return regs->gprs[2];
}
static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
regs->gprs[2] = error ? error : val;
}
static inline void syscall_get_arguments(struct task_struct *task,
struct pt_regs *regs,
unsigned long *args)
{
unsigned long mask = -1UL;
unsigned int n = 6;
#ifdef CONFIG_COMPAT
if (test_tsk_thread_flag(task, TIF_31BIT))
mask = 0xffffffff;
#endif
while (n-- > 0)
if (n > 0)
args[n] = regs->gprs[2 + n] & mask;
args[0] = regs->orig_gpr2 & mask;
}
static inline void syscall_set_arguments(struct task_struct *task,
struct pt_regs *regs,
const unsigned long *args)
{
unsigned int n = 6;
while (n-- > 0)
if (n > 0)
regs->gprs[2 + n] = args[n];
regs->orig_gpr2 = args[0];
}
static inline int syscall_get_arch(struct task_struct *task)
{
#ifdef CONFIG_COMPAT
if (test_tsk_thread_flag(task, TIF_31BIT))
return AUDIT_ARCH_S390;
#endif
return AUDIT_ARCH_S390X;
}
#endif /* _ASM_SYSCALL_H */