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arm: add arch_mmap_check(), get rid of sys_arm_mremap() 

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Al Viro 2009-11-30 13:06:51 -05:00
parent c4caa77815
commit 2ea1d13f64
3 changed files with 4 additions and 26 deletions
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3
arch/arm/include/asm/mman.h
View File

@ -1 +1,4 @@
#include <asm-generic/mman.h>
#define arch_mmap_check(addr, len, flags) \
(((flags) & MAP_FIXED && (addr) < FIRST_USER_ADDRESS) ? -EINVAL : 0)

2
arch/arm/kernel/calls.S
View File

@ -172,7 +172,7 @@
/* 160 */ CALL(sys_sched_get_priority_min)
CALL(sys_sched_rr_get_interval)
CALL(sys_nanosleep)
CALL(sys_arm_mremap)
CALL(sys_mremap)
CALL(sys_setresuid16)
/* 165 */ CALL(sys_getresuid16)
CALL(sys_ni_syscall) /* vm86 */

25
arch/arm/kernel/sys_arm.c
View File

@ -28,10 +28,6 @@
#include <linux/ipc.h>
#include <linux/uaccess.h>
extern unsigned long do_mremap(unsigned long addr, unsigned long old_len,
unsigned long new_len, unsigned long flags,
unsigned long new_addr);
/* common code for old and new mmaps */
inline long do_mmap2(
unsigned long addr, unsigned long len,
@ -43,9 +39,6 @@ inline long do_mmap2(
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
if (flags & MAP_FIXED && addr < FIRST_USER_ADDRESS)
goto out;
error = -EBADF;
if (!(flags & MAP_ANONYMOUS)) {
file = fget(fd);
@ -89,24 +82,6 @@ out:
return error;
}
asmlinkage unsigned long
sys_arm_mremap(unsigned long addr, unsigned long old_len,
unsigned long new_len, unsigned long flags,
unsigned long new_addr)
{
unsigned long ret = -EINVAL;
if (flags & MREMAP_FIXED && new_addr < FIRST_USER_ADDRESS)
goto out;
down_write(&current->mm->mmap_sem);
ret = do_mremap(addr, old_len, new_len, flags, new_addr);
up_write(&current->mm->mmap_sem);
out:
return ret;
}
/*
* Perform the select(nd, in, out, ex, tv) and mmap() system
* calls.