unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
{
unsigned long align_goal, addr = -ENOMEM;
+ unsigned long (*get_area)(struct file *, unsigned long,
+ unsigned long, unsigned long, unsigned long);
+
+ get_area = current->mm->get_unmapped_area;
if (flags & MAP_FIXED) {
/* Ok, don't mess with it. */
- return get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+ return get_area(NULL, orig_addr, len, pgoff, flags);
}
flags &= ~MAP_SHARED;
align_goal = (64UL * 1024);
do {
- addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
+ addr = get_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
if (!(addr & ~PAGE_MASK)) {
addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
break;
* be obtained.
*/
if (addr & ~PAGE_MASK)
- addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+ addr = get_area(NULL, orig_addr, len, pgoff, flags);
return addr;
}
}
}
-SYSCALL_DEFINE1(sparc_brk, unsigned long, brk)
-{
- /* People could try to be nasty and use ta 0x6d in 32bit programs */
- if (test_thread_flag(TIF_32BIT) && brk >= STACK_TOP32)
- return current->mm->brk;
-
- if (unlikely(straddles_64bit_va_hole(current->mm->brk, brk)))
- return current->mm->brk;
-
- return sys_brk(brk);
-}
-
/*
* sys_pipe() is the normal C calling standard for creating
* a pipe. It's not the way unix traditionally does this, though.
unsigned long, prot, unsigned long, flags, unsigned long, fd,
unsigned long, off)
{
- struct file * file = NULL;
- unsigned long retval = -EBADF;
-
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(fd);
- if (!file)
- goto out;
- }
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- len = PAGE_ALIGN(len);
+ unsigned long retval = -EINVAL;
- down_write(¤t->mm->mmap_sem);
- retval = do_mmap(file, addr, len, prot, flags, off);
- up_write(¤t->mm->mmap_sem);
-
- if (file)
- fput(file);
+ if ((off + PAGE_ALIGN(len)) < off)
+ goto out;
+ if (off & ~PAGE_MASK)
+ goto out;
+ retval = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
out:
return retval;
}
if (test_thread_flag(TIF_32BIT))
goto out;
- if (unlikely(new_len >= VA_EXCLUDE_START))
- goto out;
- if (unlikely(sparc_mmap_check(addr, old_len)))
- goto out;
- if (unlikely(sparc_mmap_check(new_addr, new_len)))
- goto out;
down_write(¤t->mm->mmap_sem);
ret = do_mremap(addr, old_len, new_len, flags, new_addr);