diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2009-11-30 21:06:51 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-12-11 14:34:09 +0300 |
| commit | 2ea1d13f64efdf49319e86c87d9ba38c30902782 (patch) | |
| tree | b55064cc0deb54ce23cc08208c54b31ca9e7b20a | |
| parent | c4caa778157dbbf04116f0ac2111e389b5cd7a29 (diff) | |
| download | linux-2ea1d13f64efdf49319e86c87d9ba38c30902782.tar.xz | |
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>
| -rw-r--r-- | arch/arm/include/asm/mman.h | 3 | ||||
| -rw-r--r-- | arch/arm/kernel/calls.S | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/sys_arm.c | 25 |
3 files changed, 4 insertions, 26 deletions
diff --git a/arch/arm/include/asm/mman.h b/arch/arm/include/asm/mman.h index 8eebf89f5ab1..41f99c573b93 100644 --- a/arch/arm/include/asm/mman.h +++ b/arch/arm/include/asm/mman.h @@ -1 +1,4 @@ #include <asm-generic/mman.h> + +#define arch_mmap_check(addr, len, flags) \ + (((flags) & MAP_FIXED && (addr) < FIRST_USER_ADDRESS) ? -EINVAL : 0) diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index f58c1156e779..9314a2d681f1 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -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 */ diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c index 78ecaac65206..3b897444a9bd 100644 --- a/arch/arm/kernel/sys_arm.c +++ b/arch/arm/kernel/sys_arm.c @@ -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(¤t->mm->mmap_sem); - ret = do_mremap(addr, old_len, new_len, flags, new_addr); - up_write(¤t->mm->mmap_sem); - -out: - return ret; -} - /* * Perform the select(nd, in, out, ex, tv) and mmap() system * calls. |