diff options
| -rw-r--r-- | fs/overlayfs/dir.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 4257a4a0ed72..b84d61b353cd 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -12,12 +12,18 @@ #include <linux/xattr.h> #include <linux/security.h> #include <linux/cred.h> +#include <linux/module.h> #include <linux/posix_acl.h> #include <linux/posix_acl_xattr.h> #include <linux/atomic.h> #include <linux/ratelimit.h> #include "overlayfs.h" +static unsigned short ovl_redirect_max = 256; +module_param_named(redirect_max, ovl_redirect_max, ushort, 0644); +MODULE_PARM_DESC(ovl_redirect_max, + "Maximum length of absolute redirect xattr value"); + void ovl_cleanup(struct inode *wdir, struct dentry *wdentry) { int err; @@ -777,13 +783,11 @@ static bool ovl_can_move(struct dentry *dentry) !d_is_dir(dentry) || !ovl_type_merge_or_lower(dentry); } -#define OVL_REDIRECT_MAX 256 - static char *ovl_get_redirect(struct dentry *dentry, bool samedir) { char *buf, *ret; struct dentry *d, *tmp; - int buflen = OVL_REDIRECT_MAX + 1; + int buflen = ovl_redirect_max + 1; if (samedir) { ret = kstrndup(dentry->d_name.name, dentry->d_name.len, |