Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various fu

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

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use strlcpy. [fixed off-by-one in subr_prop.c]

grow #! line length -- patch from cgd, fixes PR kern/20112 from Todd Vierling

Added support for fingerprinted executables aka verified exec

remove trailing \n in panic(). approved perry.

add RCSIDs

In check_exec(), don't bother checking P_TRACED along with
MNT_NOSUID, just check MNT_NOSUID to clear the S{U,G}ID bits
in the attributes for the vnode we're about to exec.

We now check P_TRACED rig

In check_exec(), don't bother checking P_TRACED along with
MNT_NOSUID, just check MNT_NOSUID to clear the S{U,G}ID bits
in the attributes for the vnode we're about to exec.

We now check P_TRACED right before we would actually perform
the s{u,g}id function in the exec code.

This closes a race condition between exec of a setuid binary
and ptrace(2).

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Fix a partial construction problem that can cause race conditions
between creation of a file descriptor and close(2) when using kernel
assisted threads. What we do is stick descriptors in the table,

Fix a partial construction problem that can cause race conditions
between creation of a file descriptor and close(2) when using kernel
assisted threads. What we do is stick descriptors in the table, but
mark them as "larval". This causes essentially everything to treat
it as a non-existent descriptor, except for fdalloc(), which sees a
filled slot so that it won't (incorrectly) allocate it again. When
a descriptor is fully constructed, the code that has constructed it
marks it as "mature" (which actually clears the "larval" flag), and
things continue to work as normal.

While here, gather all the code that gets a descriptor from the table
into a fd_getfile() function, and call it, rather than having the
same (sometimes incorrect) code copied all over the place.

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restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
*

restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures

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Convert namei pathname buffer allocation to use the pool allocator.

ANSI'ify.

remove include of <vm/vm.h>

(exec_script_makecmds): remove declaration of vnops, now in
<sys/file.h>

FILE_UNUSE wasn't updated in the FDSCRIPTS block.

Add "use counting" to file entries. When closing a file, and it's reference
count is 0, wait for use count to drain before finishing the close.

This is necessary in order for multiple processes to

Add "use counting" to file entries. When closing a file, and it's reference
count is 0, wait for use count to drain before finishing the close.

This is necessary in order for multiple processes to safely share file
descriptor tables.

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Modify VOP_CLOSE vnode op to always take a locked vnode. Change vn_close
to pass down a locked node. Modify union_copyup() to call VOP_CLOSE
locked nodes.

Also fix a bug in union_copyup() where a lo

Modify VOP_CLOSE vnode op to always take a locked vnode. Change vn_close
to pass down a locked node. Modify union_copyup() to call VOP_CLOSE
locked nodes.

Also fix a bug in union_copyup() where a lock on the lower vnode would
only be released if VOP_OPEN didn't fail.

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Merge with Lite2 + local changes

Make this work for SETUIDSCRIPTS:
- include <sys/stat.h> for S_ISUID, S_ISGID
- fix bug where shortcut to fail would use uninitialized variables.
- elide other warnings.

va_mode contains stat bits. Use S_IS[UG]ID rather than VS[UG]ID.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

exec vnode locking protocol changes: in a nutshell, don't keep vnodes
locked for any longer than we have to.

First pass at prototyping

Change `fdclose' to `fdrelease', to avoid confusion with device interfaces.

copy*str() should use size_t.