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Commit 9ac4ed4b authored by Al Viro's avatar Al Viro
Browse files

move security_mmap_addr() to saner place 



it really should be done by get_unmapped_area(); that cuts down on
the amount of callers considerably and it's the right place for
that stuff anyway.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 8b3ec681

mm/mmap.c

+3 −14
Original line number Diff line number Diff line
@@ -978,7 +978,6 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, 
	struct mm_struct * mm = current->mm;

	struct inode *inode;

	vm_flags_t vm_flags;

	int error;



	/*

	 * Does the application expect PROT_READ to imply PROT_EXEC?
@@ -1100,10 +1099,6 @@ static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, 
		}

	}



	error = security_mmap_addr(addr);

	if (error)

		return error;



	return mmap_region(file, addr, len, flags, vm_flags, pgoff);

}
@@ -1633,7 +1628,9 @@ get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, 
	if (addr & ~PAGE_MASK)

		return -EINVAL;



	return arch_rebalance_pgtables(addr, len);

	addr = arch_rebalance_pgtables(addr, len);

	error = security_mmap_addr(addr);

	return error ? error : addr;

}



EXPORT_SYMBOL(get_unmapped_area);
@@ -2210,10 +2207,6 @@ static unsigned long do_brk(unsigned long addr, unsigned long len) 
	if (!len)

		return addr;



	error = security_mmap_addr(addr);

	if (error)

		return error;



	flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;



	error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED);
@@ -2566,10 +2559,6 @@ int install_special_mapping(struct mm_struct *mm, 
	vma->vm_ops = &special_mapping_vmops;

	vma->vm_private_data = pages;



	ret = security_mmap_addr(vma->vm_start);

	if (ret)

		goto out;



	ret = insert_vm_struct(mm, vma);

	if (ret)

		goto out;

mm/mremap.c

+0 −7
Original line number Diff line number Diff line
@@ -371,10 +371,6 @@ static unsigned long mremap_to(unsigned long addr, 
	if ((addr <= new_addr) && (addr+old_len) > new_addr)

		goto out;



	ret = security_mmap_addr(new_addr);

	if (ret)

		goto out;



	ret = do_munmap(mm, new_addr, new_len);

	if (ret)

		goto out;
@@ -532,9 +528,6 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len, 
			goto out;

		}



		ret = security_mmap_addr(new_addr);

		if (ret)

			goto out;

		ret = move_vma(vma, addr, old_len, new_len, new_addr);

	}

out: