On Wed, Sep 02, 2015 at 09:06:32PM +0200, Andreas Gruenbacher wrote: > 2015-09-02 20:53 GMT+02:00 J. Bruce Fields <bfie...@fieldses.org>: > >> @@ -453,7 +453,8 @@ static int sb_permission(struct super_block *sb, > >> struct inode *inode, int mask) > >> * this, letting us set arbitrary permissions for filesystem access > >> without > >> * changing the "normal" UIDs which are used for other things. > >> * > >> - * When checking for MAY_APPEND, MAY_WRITE must also be set in @mask. > >> + * When checking for MAY_APPEND, MAY_CREATE_FILE, MAY_CREATE_DIR, > >> + * MAY_WRITE must also be set in @mask. > > > > Why? > > So that file systems that don't support MAY_APPEND can ignore the flag > and will then automatically check for MAY_WRITE instead.
Got it. And maybe it should be obvious, but it might be worth a sentence in the changelog if it's not already explained elsewhere.--b. > > > (Also: written as a simple list like that, it's a ambiguous how to > > parse that comment: I think you mean that MAY_WRITE must be set whenever > > MAY_APPEND, MAY_CREATE_FILE, or MAY_CREATE_DIR are set.) > > Yes, that's better. > > Thanks, > Andreas > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
