![H. Peter Anvin](/assets/img/avatar_default.png)
Mark the system call tables readonly, as they already are on native, and the 32-bit UM version was in the previous assembly version. The 32-bit version lost it due to copy and paste from the 64-bit version, which was missing the const. Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Link: http://lkml.kernel.org/r/tip-45db1c6176c8171d9ae6fa6d82e07d115a5950ca@git.kernel.org Signed-off-by: H. Peter Anvin <hpa@zytor.com>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
|
|
* System call table for UML/i386, copied from arch/x86/kernel/syscall_*.c
|
|
* with some changes for UML.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/sys.h>
|
|
#include <linux/cache.h>
|
|
#include <generated/user_constants.h>
|
|
|
|
#define __NO_STUBS
|
|
|
|
/*
|
|
* Below you can see, in terms of #define's, the differences between the x86-64
|
|
* and the UML syscall table.
|
|
*/
|
|
|
|
/* Not going to be implemented by UML, since we have no hardware. */
|
|
#define stub_iopl sys_ni_syscall
|
|
#define sys_ioperm sys_ni_syscall
|
|
|
|
#define sys_vm86old sys_ni_syscall
|
|
#define sys_vm86 sys_ni_syscall
|
|
|
|
#define old_mmap sys_old_mmap
|
|
|
|
#define ptregs_fork sys_fork
|
|
#define ptregs_execve sys_execve
|
|
#define ptregs_iopl sys_iopl
|
|
#define ptregs_vm86old sys_vm86old
|
|
#define ptregs_clone sys_clone
|
|
#define ptregs_vm86 sys_vm86
|
|
#define ptregs_sigaltstack sys_sigaltstack
|
|
#define ptregs_vfork sys_vfork
|
|
|
|
#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ;
|
|
#include <asm/syscalls_32.h>
|
|
|
|
#undef __SYSCALL_I386
|
|
#define __SYSCALL_I386(nr, sym, compat) [ nr ] = sym,
|
|
|
|
typedef void (*sys_call_ptr_t)(void);
|
|
|
|
extern void sys_ni_syscall(void);
|
|
|
|
const sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
|
|
/*
|
|
* Smells like a compiler bug -- it doesn't work
|
|
* when the & below is removed.
|
|
*/
|
|
[0 ... __NR_syscall_max] = &sys_ni_syscall,
|
|
#include <asm/syscalls_32.h>
|
|
};
|
|
|
|
int syscall_table_size = sizeof(sys_call_table);
|