- Align the fifo output in fifo_print() with other vn_printf() output.
- Remove the leading space from lockmgr_printinfo() so its output lines up
in vn_printf().
- lockmgr_printinfo() now ends with a newline, so remove an extra newline
from vn_printf().
of devvp becomes VBAD, which UFS incorrectly interprets as snapshot
vnode, which in turns causes panic. Fix it by replacing '!= VCHR'
with '== VREG'.
With this fix in place, you should no longer be able to panic the system
by removing a device with an UFS filesystem mounted from it - assuming
you don't use softupdates.
Reviewed by: kib
Tested by: pho
Approved by: rwatson (mentor)
Sponsored by: FreeBSD Foundation
Back in 1.1 of kern_sysctl.c the sysctl() routine wired the "old" userland
buffer for most sysctls (everything except kern.vnode.*). I think to prevent
issues with wiring too much memory it used a 'memlock' to serialize all
sysctl(2) invocations, meaning that only one user buffer could be wired at
a time. In 5.0 the 'memlock' was converted to an sx lock and renamed to
'sysctl lock'. However, it still only served the purpose of serializing
sysctls to avoid wiring too much memory and didn't actually protect the
sysctl tree as its name suggested. These changes expand the lock to actually
protect the tree.
Later on in 5.0, sysctl was changed to not wire buffers for requests by
default (sysctl_handle_opaque() will still wire buffers larger than a single
page, however). As a result, user buffers are no longer wired as often.
However, many sysctl handlers still wire user buffers, so it is still
desirable to serialize userland sysctl requests. Kernel sysctl requests
are allowed to run in parallel, however.
- Expose sysctl_lock()/sysctl_unlock() routines to exclusively lock the
sysctl tree for a few places outside of kern_sysctl.c that manipulate
the sysctl tree directly including the kernel linker and vfs_register().
- sysctl_register() and sysctl_unregister() require the caller to lock
the sysctl lock using sysctl_lock() and sysctl_unlock(). The rest of
the public sysctl API manage the locking internally.
- Add a locked variant of sysctl_remove_oid() for internal use so that
external uses of the API do not need to be aware of locking requirements.
- The kernel linker no longer needs Giant when manipulating the sysctl
tree.
- Add a missing break to the loop in vfs_register() so that we stop looking
at the sysctl MIB once we have changed it.
MFC after: 1 month
sysctls during a linker file unload. We drop the lock when doing similar
operations during a linker file load. To close races, clear the LINKED
flag before dropping the lock so that the linker file is no longer visible
to userland.
MFC after: 1 week
o change tdma packet drop msg when ack required to ATH_DEBUG_TDMA
(ATH_DEBUG_XMIT is too noisy)
o add a debug msg for raw packet drop due to interface down/invalid
o add stats for these two cases
o explain how another drop case is handled
IEEE80211_KEY_DEVKEY
o fix channel power printing (they are signed values)
o add show statab to dump a node table and automatically dump the sta
table of a com structure with /s
o add CFI_SUPPORT_STRATAFLASH compile option to enable support
o add new ioctls to get/set the factory and user/oem segments of the PR
and to get/set Protection Lock Register that fuses the user segment
o add #defines for bits in the status register
o update cfi_wait_ready to take an offset so it can be used to wait for
PR write completion and replace constants w/ symbolic names
Note: writing the user segment isn't correct; committing now to get review.
Sponsored by: Carlson Wireless
Reviewed by: imp, Chris Anderson
in udp6_connect (td is already dereferenced elsewhere without such a
check). This makes the conversion from a sockaddr to a sockaddr_in6
always happen, so convert once at the beginning of the function rather
than twice in the middle.
Approved by: bz (mentor)
prison_check_ip4 and prison_check_ip6. As prison_if includes a jailed()
check, remove that check before calling rtm_get_jailed.
Approved by: bz (mentor)
When we leave the console TTY constantly open, we never reset the
termios attributes. This causes output processing, echoing, etc. not to
be reset to the proper values when going into single user mode after the
system has booted. It also causes nl-to-crnl-conversion not to take
place during shutdown, which causes a `staircase effect'.
This patch adds a new TTY flag, TF_OPENED_CONS, which is set when the
TTY is opened through /dev/console. Because the flags are only used by
the kernel and the pstat(8) utility, I've decided to renumber the TTY
flags. This shouldn't be an issue, because the TTY layer is not yet part
of a stable release.
Reported by: Mark Atkinson <atkin901 yahoo com>
Tested by: sepotvin
jail doesn't support. This involves a new function prison_check_af,
like prison_check_ip[46] but that checks only the family.
With this change, most of the errors generated by jailed sockets
shouldn't ever occur, at least until jails are changeable.
Approved by: bz (mentor)
