use the definition in include/uapi/linux/xattr.h

Signed-off-by: Toralf Förster <toralf.foers...@gmx.de>
---
 security/commoncap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/security/commoncap.c b/security/commoncap.c
index 1832cf7..907a3ef 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -658,7 +658,7 @@ int cap_inode_setxattr(struct dentry *dentry, const char 
*name,
        }
 
        if (!strncmp(name, XATTR_SECURITY_PREFIX,
-                    sizeof(XATTR_SECURITY_PREFIX) - 1) &&
+                    XATTR_SECURITY_PREFIX_LEN) &&
            !capable(CAP_SYS_ADMIN))
                return -EPERM;
        return 0;
@@ -684,7 +684,7 @@ int cap_inode_removexattr(struct dentry *dentry, const char 
*name)
        }
 
        if (!strncmp(name, XATTR_SECURITY_PREFIX,
-                    sizeof(XATTR_SECURITY_PREFIX) - 1) &&
+                    XATTR_SECURITY_PREFIX_LEN) &&
            !capable(CAP_SYS_ADMIN))
                return -EPERM;
        return 0;
-- 
2.4.10

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