src-test2/sys/fs/devfs, branch release/8.1.0_cvs

Copy releng/8.1 to release/8.1.0 for 8.1-RELEASE.

2010-07-17T05:41:01Z

Approved by: re (implicit) This commit was manufactured to restore the state of the 8.1-RELEASE image.

MFC r207729:

2010-05-20T09:38:15Z

Add MAKEDEV_NOWAIT flag for make_dev_credf(9).

Improve nested jail awareness of devfs by handling credentials.

2009-06-20T14:50:32Z

Now that we start to use credentials on character devices more often (because of MPSAFE TTY), move the prison-checks that are in place in the TTY code into devfs. Instead of strictly comparing the prisons, use the more common prison_check() function to compare credentials. This means that pseudo-terminals are only visible in devfs by processes within the same jail and parent jails. Even though regular users in parent jails can now interact with pseudo-terminals from child jails, this seems to be the right approach. These processes are also capable of interacting with the jailed processes anyway, through signals for example. Reviewed by: kib, rwatson (older version)

VOP_IOCTL takes unlocked vnode as an argument. Due to this, v_data may

2009-06-10T13:57:36Z

be NULL or derefenced memory may become free at arbitrary moment. Lock the vnode in cd9660, devfs and pseudofs implementation of VOP_IOCTL to prevent reclaim; check whether the vnode was already reclaimed after the lock is granted. Reported by: georg at dts su Reviewed by: des (pseudofs) MFC after: 2 weeks

Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC

2009-06-05T14:55:22Z

and used in a large number of files, but also because an increasing number of incorrect uses of MAC calls were sneaking in due to copy-and-paste of MAC-aware code without the associated opt_mac.h include. Discussed with: pjd

Re-add opt_mac.h include, which is required in order for MNT_MULTILABEL

2009-06-04T10:30:18Z

to be set properly on devfs. Otherwise, it isn't possible to set labels on /dev nodes. Reported by: Sergio Rodriguez MFC after: 3 days

Devfs replaces file ops vector with devfs-specific one in devfs_open(),

2009-05-15T19:23:05Z

before the struct file is fully initialized in vn_open(), in particular, fp->f_vnode is NULL. Other thread calling file operation before f_vnode is set results in NULL pointer dereference in devvn_refthread(). Initialize f_vnode before calling d_fdopen() cdevsw method, that might set file ops too. Reported and tested by: Chris Timmons (RELENG_7 version) MFC after: 3 days

Remove the thread argument from the FSD (File-System Dependent) parts of

2009-05-11T15:33:26Z

the VFS. Now all the VFS_* functions and relating parts don't want the context as long as it always refers to curthread. In some points, in particular when dealing with VOPs and functions living in the same namespace (eg. vflush) which still need to be converted, pass curthread explicitly in order to retain the old behaviour. Such loose ends will be fixed ASAP. While here fix a bug: now, UFS_EXTATTR can be compiled alone without the UFS_EXTATTR_AUTOSTART option. VFS KPI is heavilly changed by this commit so thirdy parts modules needs to be recompiled. Bump __FreeBSD_version in order to signal such situation.

Remove VOP_LEASE and supporting functions. This hasn't been used since

2009-04-10T10:52:19Z

the removal of NQNFS, but was left in in case it was required for NFSv4. Since our new NFSv4 client and server can't use it for their requirements, GC the old mechanism, as well as other unused lease- related code and interfaces. Due to its impact on kernel programming and binary interfaces, this change should not be MFC'd. Proposed by: jeff Reviewed by: jeff Discussed with: rmacklem, zach loafman @ isilon

Enable advisory file locking for devfs vnodes.

2009-03-11T12:53:16Z

Reported by: Timothy Redaelli MFC after: 1 week