1 Add some protection against double-freeing mbufs in DIAGNOSTIC kernels.
2 Add a m_defrag() that's derived from
sys/dev/pci/if_vge.c:vge_m_defrag(). This one copies the packet
header.
3 Constify m_tag_find().
unimplemented, except enough of linkat(2) to hardlink to a symlink.
Everything new in headers is guarded #ifdef _INCOMPLETE_XOPEN_C063 since
some software (e.g.: xcvs in our own tree) will assume they can use openat(2)
when AT_FDCWD is defined. _INCOMPLETE_XOPEN_C063 will go away once support
will be completed.
- When sel_do_scan() restarts do a full initialization with selclear() so
we start from an empty set without registered events. Defer the
evaluation of l_selret after selclear() and add the count of direct events
to the count of events.
- For selscan()/pollscan() zero the output descriptors before we poll and
for selscan() take the sc_lock before we change them.
- Change sel_setevents() to not count events already set.
Reviewed by: YAMAMOTO Takashi <yamt@netbsd.org>
Should fix PR #44763 (select/poll direct-set optimization seems racy)
and PR #45187 (select(2) sometimes doesn't wakeup)
to prevent from accidentally loading ./module.kmod when we actually wanted to
load module from the system module area.
To load a module from a filesystem path, the module name must contain at
least on path separator character (/), to load a module from the system
module areas, the name must not contain a path separator character:
modload ./mymod.kmod # loads mymod.kmod from the curren directory
modload mymod # loads mymod.kmod from the system module area
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.
VOPs do. Layered file systems no longer have to modify bp->b_vp and run
into trouble when an async VOP_BWRITE() uses the wrong vnode.
- change all occurences of VOP_BWRITE(bp) to VOP_BWRITE(bp->b_vp, bp).
- remove layer_bwrite().
- welcome to 5.99.55
Adresses PR kern/38762 panic: vwakeup: neg numoutput
No objections from tech-kern@.
VOPs do. Layered file systems no longer have to modify bp->b_vp and run
into trouble when an async VOP_BWRITE() uses the wrong vnode.
Adresses PR kern/38762 panic: vwakeup: neg numoutput
No objections from tech-kern@.
filesystem in which format extended attribute shall be listed.
There are currently two formats:
- NUL-terminated strings, used for listxattr(2), this is the default.
- one byte length-pprefixed, non NUL-terminated strings, used for
extattr_list_file(2), which is obtanined by setting the
EXTATTR_LIST_PREFIXLEN flag to VOP_LISTEXTATTR(9)
This approach avoid the need for converting the list back and forth, except
in libperfuse, since FUSE uses NUL-terminated strings, and the kernel may
have requested EXTATTR_LIST_PREFIXLEN.
http://mail-index.netbsd.org/tech-kern/2011/06/17/msg010734.html
The cause of the problem is that the so_pendfree is processed with
the softnet_lock held at one point, and processing the list
calls sodoloanfree() which may kpause(). As the thread sleeps with
softnet_lock held, it ultimately cause a deadlock (see the PR or tech-kern
thread for details).
Although it should be possible to call sodopendfree() after releasing
the socket lock, it's not so easy to know where he socket lock is held and
where it's not, so we may hit the issue again later.
Add a kernel thread to handle the so_pendfree list, and wake up this
thread when adding mbufs to this list. Get rid of the various sodopendfree()
calls, hopefully fixing definitively the problem.
