structure. This field keeps track of how many levels deep we are nested
into the kernel. The nesting level is bumped at the start of a trap,
interrupt, syscall, or exception and is decremented on return. This is
used to detect the case when the kernel is returning back to a kernel
context in exception_return(). If we are returning to the kernel we need
to update the globaldata pointer register saved in the stack frame in case
we have switched CPU's between taking the initial interrupt that saved the
frame and returning. If we don't do this fixup it is possible for a CPU to
use the wrong per-cpu data. On UP systems this is not a problem, so the
code is conditional on SMP.
A count was used instead of simply checking the process status register in
the frame during exception_return() since there are critical sections at
the very start and end of a trap, exception, or interrupt from userland in
which we could trash the t7 register being used in userland. The counter
is incremented after adn before these critical sections respectively so
that we will not overwrite the saved t7 register if we are interrupted
during one of these critical sections.
Set LINT to the obj path, since we need to use the new lint's features
to create .ln files. We do not want to use the installed version for that,
since that might create files according to the old lint.
This is still a work in progress to clean this all up, but it gets
through buildworld, which was the problem at hand.
nam for an unbound socket instead of leaving nam untouched in that case.
This way, the getsockname() output can be used to determine the address
family of such sockets (AF_LOCAL).
Reviewed by: iedowse
Approved by: rwatson
linuxulator so as to allow privileged processes within a jail() to
invoke the Linux initgroups() system call. This allows the Linux
"su" to work properly (better) when running a complete Linux
environment under jail(). This problem was reported by Attila
Nagy <bra@fsn.hu>.
Reviewed by: marcel
file during the bootstrapping process of a buildworld and contained the
last isc include file to be installed. It was meant to be a directory for
the isc include files.
We now unwrap IP/IP and apply filter rules to both the outer
layer (with ``set filter blah x.x.x.x y.y.y.y ipip'') and to
the payload (reinterpreted by the filter rules).
``set log tcp/ip'' will now show both the outer wrapper and
the (reinterpreted) payload contents.
fs_contigdirs, fs_avgfilesize and fs_avgfpdir. This could cause
panics if these fields were zeroed while a filesystem was mounted
read-only, and then remounted read-write.
Add code to ffs_reload() which copies the fs_contigdirs pointer
from the previous superblock, and reinitialises fs_avgf* if necessary.
Reviewed by: mckusick
possible to use old generated doc-* files as the source for new ones.
Wrong -mdoc files would then be installed, and man(1) failed with the
following diagnostics:
mdoc error: end-macro (.em) respecification is not allowed. (#41)
Should this have been `.Em ...'?
Put helper stuff into `beforedepend' to cleanup old files.
Makefile first infected in rev 1.15.
Reported via: -current
