Issue #2907 has been reported by tkusumi. ---------------------------------------- Submit #2907: Extend IOCPARM_MAX http://bugs.dragonflybsd.org/issues/2907
* Author: tkusumi * Status: New * Priority: Normal * Assignee: * Category: * Target version: ---------------------------------------- Matt, I'd like to bring in this diff from FreeBSD which extends IOCPARM_MAX size. This patch was originally added for ZFS in 2010. https://leaf.dragonflybsd.org/~tkusumi/diff/598dc07f.patch Larger IOCPARM_MAX is necessary to port autofs to DragonFly. Without this, autofs ioctl fails at mapped_ioctl() with ENOTTY as the ioctl structure size exceeds IOCPARM_MAX which is page size. 667 /* 668 * Interpret high order word to find amount of data to be 669 * copied to/from the user's address space. 670 */ 671 size = IOCPARM_LEN(com); 672 if (size > IOCPARM_MAX) { 673 error = ENOTTY; 674 goto done; 675 } Autofs header could define the structure using, say (MAXPATHLEN / 2) instead of MAXPATHLEN in order to just pass this test, which still seems large enough in most cases, but it may break portability of userspace config files. https://github.com/freebsd/freebsd/blob/master/sys/fs/autofs/autofs_ioctl.h -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://bugs.dragonflybsd.org/my/account
