exportfs: don't assume that ->iterate() won't feed us too long entries



On some filesystems it's impossible even with fs corruption, but we'd
better not rely on that, what with memcpy() into on-stack array we
are doing there.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent 5d8943b0

fs/exportfs/expfs.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -231,7 +231,7 @@ static int filldir_one(void * __buf, const char * name, int len,
	int result = 0;		int result = 0;

	buf->sequence++;		buf->sequence++;
	if (buf->ino == ino) {		if (buf->ino == ino && len <= NAME_MAX) {
	memcpy(buf->name, name, len);		memcpy(buf->name, name, len);
	buf->name[len] = '\0';		buf->name[len] = '\0';
	buf->found = 1;		buf->found = 1;