system drivers where it was missing from and fixes one buggy
implementation. The arguably weird semantics of the check are
maintained (v_size vs. va_bytes, overwrite).
conditional content depending on if the NFS client is wanted or
not. The server can now be made an independent module not depending
on the nfs client.
Tested with rump_nfs (standalone client), rump_nfsd (standalone
nfsd) and a qemu installation with both the client and the server.
years ago when the kernel was modified to not alter ABI based on
DIAGNOSTIC, and now just call the respective function interfaces
(in lowercase). Plenty of mix'n match upper/lowercase has creeped
into the tree since then. Nuke the macros and convert all callsites
to lowercase.
no functional change
- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.
Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).
Discussed on <tech-kern>, reviewed by <ad>.
lookup_for_nfsd(). This code is, or at least should be, the same as
the regular symlink-following code plus an extra flag nfsd needs.
The two lots of code can/will be merged in the future.
private backdoor entry point this is.
Also, clone the lookup_for_nfsd() entry point as
lookup_for_nfsd_index(), for use by a different call site in nfsd that
does different unclean things with nameidata.
the other routines of the same spirit.
Adjust file-system code to use it.
Keep vaccess() for KPI compatibility and to keep element of least
surprise. A "diagnostic" message warning that vaccess() is deprecated will
be printed when it's used (obviously, only in DIAGNOSTIC kernels).
No objections on tech-kern@:
http://mail-index.netbsd.org/tech-kern/2009/06/21/msg005310.html
before feeding it to VOP_GETATTR. it's necessary because the vnode might
be being cleaned by getcleanvnode.
it's an instance of more general races between vnode reclaim and
unlocked VOPs. however, this one happens somewhat often because it can be
triggered by getnewvnode rather than revoke.
being reclaimed by another thread. after recent changes in cache_lookup_raw,
there's a race between cache_lookup_raw/vtryget and getcleanvnode/vclean.
PR/41028.
Fix some of the races (but probably not all of them) in the NFS server code.
nfssvc_nfsd(): change a splsoftclock()/spx() to mutex_enter/exit(&nfsd_lock)
(I guess it was forgotten when the nfsd code was made SMP safe)
m_freem(nd_nam) in nfsrv_slpderef() instead of nfsrv_zapsock() to
avoid possible use after free in nfssvc_nfsd()
Fix nfsrv_slpderef() to not release nfsd_lock before testing SLP_VALID
and reaquiring it just after. This could cause a use after free
of the slp if one thread is in nfsrv_slpderef() and the other one grabs
slp from nfssvc_sockpending and zap it.
nfsrv_rename() can exit without calling genfs_renamelock_exit() because
the nfsm_reply() can do return (0) on error.
Change nfsm_reply to use 'error = 0; goto nfsmout' instead.
Fix a few place so it's safe to goto nfsmout from nfsm_reply, or other
macros calling it.
As a side effect it could fix a missing vrele(dirp) in various place where
nfsm_reply could return(0).
