CVS log for src/sys/compat/linux/common/linux_file.c

Up to [cvs.NetBSD.org] / src / sys / compat / linux / common

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Default branch: MAIN

linux_sys_copy_file_range: Nix unused variable new_size.

linux_sys_copy_file_range: Avoid more UB arithmetic overflow.

Need to check the input offset too, not just the output offset.

No functional change in the non-UB case.

linux_sys_copy_file_range: Avoid UB arithmetic overflow.

No functional change intended in the non-UB case.

sys/compat/linux/common/linux_file.c: KNF

No functional change intended.

linux_sys_copy_file_range: Prune dead branch.

kmem_alloc(KM_SLEEP) can't fail.

No functional change intended.

sys/compat/linux/common/linux_file.c: Fix blank lines and comments.

No functional change intended.

sys/compat/linux/common/linux_file.c: KNF in function heads.

No functional change intended.

sys/compat/linux/common: Nix trailing whitespace, and one blank line.

No functional change intended.

Linux GSoC-2024: renameat2, clone3, sync_file_range, syncfs (Shivraj Jamgade)

From gsoc 2024: Implement faccessat2 and getcpu (Shivraz)

Add memfd_create(2) from GSoC 2023 by Theodore Preduta

Pull up following revision(s) (requested by riastradh in ticket #1836):

	sys/compat/linux/arch/i386/linux_machdep.c: revision 1.168
	sys/compat/sunos/sunos_misc.c: revision 1.177
	sys/compat/netbsd32/netbsd32_compat_50.c: revision 1.52
	sys/compat/common/kern_resource_43.c: revision 1.23
	sys/compat/netbsd32/netbsd32_conv.h: revision 1.46
	sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.35
	sys/compat/common/vfs_syscalls_12.c: revision 1.38
	sys/compat/ultrix/ultrix_misc.c: revision 1.126
	sys/compat/common/kern_sig_43.c: revision 1.37
	sys/compat/linux/common/linux_mtio.c: revision 1.8
	sys/compat/freebsd/freebsd_misc.c: revision 1.34
	sys/compat/linux/common/linux_olduname.c: revision 1.67
	sys/compat/linux/arch/mips/linux_machdep.c: revision 1.44
	sys/compat/freebsd/freebsd_sched.c: revision 1.23
	sys/compat/ossaudio/ossaudio.c: revision 1.84
	sys/compat/sys/time_types.h: revision 1.6
	sys/compat/linux/arch/powerpc/linux_machdep.c: revision 1.51
	sys/compat/linux/common/linux_file.c: revision 1.119
	sys/compat/linux/arch/arm/linux_machdep.c: revision 1.34
	sys/compat/netbsd32/netbsd32_wait.c: revision 1.25
	sys/compat/linux32/common/linux32_time.c: revision 1.38
	sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.33
	sys/compat/linux/arch/alpha/linux_machdep.c: revision 1.52
	sys/compat/linux32/arch/amd64/linux32_machdep.c: revision 1.46
	sys/compat/netbsd32/netbsd32_compat_12.c: revision 1.36
	sys/compat/ultrix/ultrix_ioctl.c: revision 1.39
	sys/compat/linux/common/linux_misc.c: revision 1.252
	sys/compat/linux/common/linux_hdio.c: revision 1.19
	sys/compat/sunos/sunos_ioctl.c: revision 1.71
	sys/compat/linux/common/linux_sched.c: revision 1.79
	sys/compat/common/kern_info_43.c: revision 1.40
	sys/compat/linux32/common/linux32_exec_elf32.c: revision 1.20
	sys/compat/linux/common/linux_socket.c: revision 1.153
	sys/compat/linux/arch/amd64/linux_machdep.c: revision 1.60
	sys/compat/common/vfs_syscalls_43.c: revision 1.68
	sys/compat/linux/arch/powerpc/linux_exec_powerpc.c: revision 1.25
	sys/compat/netbsd32/netbsd32_ptrace.c: revision 1.9
	sys/compat/common/kern_time_50.c: revision 1.37
	sys/compat/netbsd32/netbsd32_compat_20.c: revision 1.42
	sys/compat/linux/common/linux_cdrom.c: revision 1.28
	sys/compat/linux/arch/m68k/linux_machdep.c: revision 1.43
	sys/compat/common/kern_info_09.c: revision 1.22
	sys/compat/linux32/common/linux32_resource.c: revision 1.12
	sys/compat/linux/common/linux_oldolduname.c: revision 1.67
	sys/compat/netbsd32/netbsd32_nfssvc.c: revision 1.8
	sys/compat/linux32/common/linux32_signal.c: revision 1.21
	sys/compat/common/kern_sig_13.c: revision 1.22
	sys/compat/sunos32/sunos32_ioctl.c: revision 1.36
	sys/compat/netbsd32/netbsd32_compat_43.c: revision 1.62
	sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.23
	sys/compat/netbsd32/netbsd32_time.c: revision 1.56
	sys/compat/linux/common/linux_signal.c: revision 1.84
	sys/compat/netbsd32/netbsd32_signal.c: revision 1.52
	sys/compat/sunos32/sunos32_misc.c: revision 1.85
	sys/compat/linux/common/linux_time.c: revision 1.40
	sys/compat/linux/common/linux_fdio.c: revision 1.14
	sys/compat/common/vfs_syscalls_30.c: revision 1.43

sys/compat: Memset zero before copyout.

Just in case of uninitialized padding which would lead to kernel
stack disclosure.  If the compiler can prove the memset redundant
then it can optimize it away; otherwise better safe than sorry.

Pull up following revision(s), all via patch
(requested by riastradh in ticket #1487):

	sys/compat/linux/arch/i386/linux_machdep.c: revision 1.168
	sys/compat/sunos/sunos_misc.c: revision 1.177
	sys/compat/netbsd32/netbsd32_compat_50.c: revision 1.52
	sys/compat/common/kern_resource_43.c: revision 1.23
	sys/compat/netbsd32/netbsd32_conv.h: revision 1.46
	sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.35
	sys/compat/common/vfs_syscalls_12.c: revision 1.38
	sys/compat/ultrix/ultrix_misc.c: revision 1.126
	sys/compat/common/kern_sig_43.c: revision 1.37
	sys/compat/linux/common/linux_mtio.c: revision 1.8
	sys/compat/freebsd/freebsd_misc.c: revision 1.34
	sys/compat/freebsd/freebsd_machdep.c: revision 1.5
	sys/compat/linux/common/linux_olduname.c: revision 1.67
	sys/compat/linux/arch/mips/linux_machdep.c: revision 1.44
	sys/compat/freebsd/freebsd_sched.c: revision 1.23
	sys/compat/ossaudio/ossaudio.c: revision 1.84
	sys/compat/sys/time_types.h: revision 1.6
	sys/compat/linux/arch/powerpc/linux_machdep.c: revision 1.51
	sys/compat/common/ieee80211_20.c: revision 1.7
	sys/compat/linux/common/linux_file.c: revision 1.119
	sys/compat/linux/arch/arm/linux_machdep.c: revision 1.34
	sys/compat/netbsd32/netbsd32_wait.c: revision 1.25
	sys/compat/linux32/common/linux32_time.c: revision 1.38
	sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.33
	sys/compat/linux/arch/alpha/linux_machdep.c: revision 1.52
	sys/compat/linux32/arch/amd64/linux32_machdep.c: revision 1.46
	sys/compat/netbsd32/netbsd32_compat_12.c: revision 1.36
	sys/compat/ultrix/ultrix_ioctl.c: revision 1.39
	sys/compat/linux/common/linux_misc.c: revision 1.252
	sys/compat/linux/common/linux_hdio.c: revision 1.19
	sys/compat/sunos/sunos_ioctl.c: revision 1.71
	sys/compat/linux/common/linux_sched.c: revision 1.79
	sys/compat/common/kern_info_43.c: revision 1.40
	sys/compat/linux32/common/linux32_exec_elf32.c: revision 1.20
	sys/compat/linux/common/linux_socket.c: revision 1.153
	sys/compat/linux/arch/amd64/linux_machdep.c: revision 1.60
	sys/compat/common/vfs_syscalls_43.c: revision 1.68
	sys/compat/linux/arch/powerpc/linux_exec_powerpc.c: revision 1.25
	sys/compat/netbsd32/netbsd32_ptrace.c: revision 1.9
	sys/compat/common/kern_time_50.c: revision 1.37
	sys/compat/netbsd32/netbsd32_compat_20.c: revision 1.42
	sys/compat/linux/common/linux_cdrom.c: revision 1.28
	sys/compat/linux/arch/m68k/linux_machdep.c: revision 1.43
	sys/compat/common/kern_info_09.c: revision 1.22
	sys/compat/linux32/common/linux32_resource.c: revision 1.12
	sys/compat/linux/common/linux_oldolduname.c: revision 1.67
	sys/compat/common/if_media_80.c: revision 1.4
	sys/compat/linux/arch/alpha/linux_osf1.c: revision 1.5
	sys/compat/netbsd32/netbsd32_nfssvc.c: revision 1.8
	sys/compat/linux32/common/linux32_signal.c: revision 1.21
	sys/compat/common/kern_sig_13.c: revision 1.22
	sys/compat/sunos32/sunos32_ioctl.c: revision 1.36
	sys/compat/netbsd32/netbsd32_compat_43.c: revision 1.62
	sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.23
	sys/compat/netbsd32/netbsd32_time.c: revision 1.56
	sys/compat/linux/common/linux_signal.c: revision 1.84
	sys/compat/netbsd32/netbsd32_signal.c: revision 1.52
	sys/compat/sunos32/sunos32_misc.c: revision 1.85
	sys/compat/linux/common/linux_time.c: revision 1.40
	sys/compat/linux/common/linux_fdio.c: revision 1.14
	sys/compat/common/vfs_syscalls_30.c: revision 1.43

sys/compat: Memset zero before copyout.

Just in case of uninitialized padding which would lead to kernel
stack disclosure.  If the compiler can prove the memset redundant
then it can optimize it away; otherwise better safe than sorry.

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX for aarch64

Add preadv(2) and pwritev(2) system calls to COMPAT_LINUX and COMPAT_LINUX32.

sys/compat: Memset zero before copyout.

Just in case of uninitialized padding which would lead to kernel
stack disclosure.  If the compiler can prove the memset redundant
then it can optimize it away; otherwise better safe than sorry.

Add suppport for Linux preadv(2) and pwritev(2).  Same as native, except
for the silly way that the offset argument is passed in.

Move proc_lock into the data segment.  It was dynamically allocated because
at the time we had mutex_obj_alloc() but not __cacheline_aligned.

Mostly merge changes from HEAD upto 20200411

add dummy implementation of linux fallocate() which just returns EOPNOTSUPP;
this is needed so that glibc falls back to emulation and apps behaving
properly, since EOPNOTSUPP is a documented and expected return code, but
ENOSYS is not

right now there are no filesystems in NetBSD tree supporting the fallocate
VOP, so no point trying to map this to a native call

supposed to help with problem reported in
https://mail-index.netbsd.org/tech-kern/2019/11/03/msg025641.html

Drop unused retval pointer from do_sys_mknod{,at}()

No functional change intended.

update from HEAD

Sync with HEAD

Add Linux specific fcntl(2) commands. Support F_DUPFD_CLOEXEC.

Pull up following revision(s) (requested by maxv in ticket #427):
	sys/compat/svr4/svr4_schedctl.c: revision 1.8
	sys/netinet/tcp_timer.c: revision 1.88
	sys/miscfs/genfs/layer_vfsops.c: revision 1.45
	sys/compat/svr4/svr4_ioctl.c: revision 1.37
	sys/ufs/chfs/chfs_vfsops.c: revision 1.14
	sys/miscfs/fdesc/fdesc_vfsops.c: revision 1.91
	sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.30
	sys/compat/common/kern_time_50.c: revision 1.28
	sys/netinet6/ip6_forward.c: revision 1.74
	sys/miscfs/umapfs/umap_vnops.c: revision 1.57
	sys/compat/svr4/svr4_fcntl.c: revision 1.74
	distrib/sets/lists/comp/mi: revision 1.1931
	sys/netinet6/udp6_output.c: revision 1.46
	sys/fs/puffs/puffs_compat.c: revision 1.3
	sys/fs/udf/udf_rename.c: revision 1.11
	sys/compat/svr4/svr4_filio.c: revision 1.24
	sys/fs/udf/udf_rename.c: revision 1.12
	sys/netinet/tcp_usrreq.c: revision 1.202
	sys/miscfs/umapfs/umap_subr.c: revision 1.29
	sys/compat/linux/common/linux_fadvise64.c: revision 1.3
	sys/netinet/if_atm.c: revision 1.34
	sys/miscfs/procfs/procfs_subr.c: revision 1.106
	sys/miscfs/genfs/layer_subr.c: revision 1.37
	sys/netinet/tcp_sack.c: revision 1.30
	sys/compat/freebsd/freebsd_misc.c: revision 1.33
	sys/compat/freebsd/freebsd_file.c: revision 1.33
	sys/ufs/chfs/chfs_vnode.c: revision 1.12
	sys/compat/svr4/svr4_ttold.c: revision 1.34
	sys/compat/linux/common/linux_file.c: revision 1.114
	sys/compat/linux/arch/mips/linux_machdep.c: revision 1.43
	sys/compat/linux/common/linux_signal.c: revision 1.76
	sys/compat/common/compat_util.c: revision 1.46
	sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.18
	sys/compat/svr4/svr4_sockio.c: revision 1.36
	sys/compat/linux/arch/arm/linux_machdep.c: revision 1.32
	sys/compat/svr4/svr4_signal.c: revision 1.66
	sys/kern/kern_exec.c: revision 1.410
	sys/fs/puffs/puffs_vfsops.c: revision 1.115
	sys/compat/svr4/svr4_exec_elf64.c: revision 1.15
	sys/compat/linux/arch/i386/linux_machdep.c: revision 1.159
	sys/compat/linux/arch/alpha/linux_machdep.c: revision 1.50
	sys/compat/linux32/common/linux32_misc.c: revision 1.24
	sys/netinet/in_pcb.c: revision 1.153
	sys/sys/malloc.h: revision 1.116
	sys/compat/common/if_43.c: revision 1.9
	share/man/man9/Makefile: revision 1.380
	sys/netinet/tcp_vtw.c: revision 1.12
	sys/miscfs/umapfs/umap_vfsops.c: revision 1.95
	sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.186
	sys/compat/common/uipc_syscalls_43.c: revision 1.46
	sys/ufs/ext2fs/ext2fs_vnops.c: revision 1.115
	sys/fs/puffs/puffs_msgif.c: revision 1.97
	sys/compat/svr4/svr4_ipc.c: revision 1.27
	sys/compat/linux/common/linux_exec.c: revision 1.117
	sys/ufs/ext2fs/ext2fs_readwrite.c: revision 1.66
	sys/netinet/tcp_output.c: revision 1.179
	sys/compat/svr4/svr4_termios.c: revision 1.28
	sys/fs/udf/udf_strat_bootstrap.c: revision 1.4
	sys/fs/puffs/puffs_subr.c: revision 1.67
	sys/fs/puffs/puffs_node.c: revision 1.36
	sys/miscfs/overlay/overlay_vnops.c: revision 1.21
	sys/fs/cd9660/cd9660_node.c: revision 1.34
	sys/netinet/raw_ip.c: revision 1.146
	sys/sys/mallocvar.h: revision 1.13
	sys/miscfs/overlay/overlay_vfsops.c: revision 1.63
	share/man/man9/malloc.9: revision 1.50
	sys/netinet6/dest6.c: revision 1.18
	sys/compat/linux/common/linux_uselib.c: revision 1.33
	sys/compat/linux/common/linux_socket.c: revision 1.120
	share/man/man9/malloc.9: revision 1.51
	sys/netinet/tcp_subr.c: revision 1.257
	sys/compat/linux/common/linux_socketcall.c: revision 1.45
	sys/compat/linux/common/linux_fadvise64_64.c: revision 1.3
	sys/compat/freebsd/freebsd_ipc.c: revision 1.17
	sys/compat/linux/common/linux_misc_notalpha.c: revision 1.109
	sys/compat/linux/arch/alpha/linux_pipe.c: revision 1.17
	sys/netinet6/in6_pcb.c: revision 1.132
	sys/netinet6/in6_ifattach.c: revision 1.94
	sys/compat/svr4/svr4_exec_elf32.c: revision 1.15
	sys/miscfs/nullfs/null_vfsops.c: revision 1.90
	sys/fs/cd9660/cd9660_util.c: revision 1.12
	sys/compat/linux/arch/powerpc/linux_machdep.c: revision 1.48
	sys/compat/freebsd/freebsd_exec_elf32.c: revision 1.20
	sys/miscfs/procfs/procfs_vfsops.c: revision 1.94
	sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.28
	sys/compat/linux/common/linux_sched.c: revision 1.67
	sys/compat/linux/common/linux_exec_aout.c: revision 1.67
	sys/compat/linux/common/linux_pipe.c: revision 1.67
	sys/compat/linux/common/linux_llseek.c: revision 1.34
	sys/compat/linux/arch/mips/linux_ptrace.c: revision 1.10
Do not uselessly include <sys/malloc.h>.
Cleanup:
 - remove struct kmembuckets (dead)
 - correctly deadify MALLOC_XX
 - remove MALLOC_DEFINE_LIMIT and MALLOC_JUSTDEFINE_LIMIT (dead)
 - remove malloc_roundup(), malloc_type_setlimit(), MALLOC_DEFINE_LIMIT()
   and MALLOC_JUSTDEFINE_LIMIT() from man 9 malloc
New sentence, new line. Bump date for previous.
Obsolete malloc_roundup(9), malloc_type_setlimit(9) and MALLOC_DEFINE_LIMIT(9)
man pages.

Do not uselessly include <sys/malloc.h>.

Rebase to HEAD as of a few days ago.

Rebase.

Add support for more open flags that have a native equivalent
(O_NONBLOCK, O_DIRECT and O_NOFOLLOW).
Translate native EFTYPE error (missing on Linux) to expected ELOOP;
when opening symlinks with flag O_NOFOLLOW.

Cleanup pipe(2) flags, now that native handle them.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

Simplify dup3 emulation to call dodup() directly instead of
sys_dup2()+fd_set_exclose(). While here, add some error conditions.

linux_off_t -> off_t in pwrite() syscall args comment.

Fix pread/pwrite syscalls which need a 64bit offset argument.

Sprinkle a few more linux_umode_t where appropriate.
Reduce diffs between archs.

Add missing syscall argument fd in comment.

implement the *at() syscalls.
bring the unimplemented syscall list up to date.

Add utimensat(2) for compat linux.

Change the vnode locking protocol of VOP_GETATTR() to request at least
a shared lock.  Make all calls outside of file systems respect it.

The calls from file systems need review.

No objections from tech-kern.

Sync with HEAD.

sync with head

move dup3 to a more appropriate place because pipe is "special". Gotta love
linux.

We have O_CLOEXEC now

sync with head

Introduce struct pathbuf. This is an abstraction to hold a pathname
and the metadata required to interpret it. Callers of namei must now
create a pathbuf and pass it to NDINIT (instead of a string and a
uio_seg), then destroy the pathbuf after the namei session is
complete.

Update all namei call sites accordingly. Add a pathbuf(9) man page and
update namei(9).

The pathbuf interface also now appears in a couple of related
additional places that were passing string/uio_seg pairs that were
later fed into NDINIT. Update other call sites accordingly.

Sync with HEAD (-D20101022).

sync with head

implement O_DIRECTORY as standardized in POSIX-2008,
for both native and linux emulations.
this fixes the rest of PR 43695.

Sync with HEAD.

sync with head.

sync with head

Remove pfind() and pgfind(), fix locking in various broken uses of these.
Rename real routines to proc_find() and pgrp_find(), remove PFIND_* flags
and have consistent behaviour.  Provide proc_find_raw() for special cases.
Fix memory leak in sysctl_proc_corename().

COMPAT_LINUX: rework ptrace() locking, minimise differences between
different versions per-arch.

Note: while this change adds some formal cosmetics for COMPAT_DARWIN and
COMPAT_IRIX - locking there is utterly broken (for ages).

Fixes PR/43176.

sync with head.

Add enum uio_seg argument to do_sys_mknod and do_sys_mkdir so these functions
can be called from kernel, too.

Change needed for zfs device node creation, until we have propoer devfs.

Oked by ad@.

sync with head.

Sync with HEAD.

Sync with HEAD.

merge christos-time_t

Sync with head.

Sync with HEAD.

sync with head.

sync with head.

Per discussion with ad, remove most of the #include <sys/sa.h> lines
as they were including sa.h just for the type(s) needed for syscallargs.h.

Instead, create a new file, sys/satypes.h, which contains just the
types needed for syscallargs.h. Yes, there's only one now, but that
may change and it's probably more likely to change if it'd be difficult
to handle. :-)

Per discussion with matt at n dot o, add an include of satypes.h to
sigtypes.h. Upcall handlers are kinda signal handlers, and signalling
is the header file that's already included for syscallargs.h that
closest matches SA.

This shaves about 3000 lines off of the diff of the branch relative
to the base. That also represents about 18% of the total before this
checkin.

I think this reduction is very good thing.

Initial checkin of re-adding SA. Everything except kern_sa.c
compiles in GENERIC for i386. This is still a work-in-progress, but
this checkin covers most of the mechanical work (changing signalling
to be able to accomidate SA's process-wide signalling and re-adding
includes of sys/sa.h and savar.h). Subsequent changes will be much
more interesting.

Also, kern_sa.c has received partial cleanup. There's still more
to do, though.

Remove clause 3 and 4 from TNF licenses

Network protocol interrupts can now block on locks, so merge the globals
proclist_mutex and proclist_lock into a single adaptive mutex (proc_lock).
Implications:

- Inspecting process state requires thread context, so signals can no longer
  be sent from a hardware interrupt handler. Signal activity must be
  deferred to a soft interrupt or kthread.

- As the proc state locking is simplified, it's now safe to take exit()
  and wait() out from under kernel_lock.

- The system spends less time at IPL_SCHED, and there is less lock activity.

- Use cdev_tty().
- Tweak locking.

Sync with HEAD.

Welcome to the time_t=long long dev_t=uint64_t branch.

sync with head.

sync with HEAD

Catch up with descriptor handling changes. See kern_descrip.c revision
1.173 for details.

Sync with HEAD.

sync with head.

Fix the linux32 emulations of fcntl() locking.
The 64bit linux emulation versions can't be used because the lock structure
alignment and field sizes all differ.
Since there need to be 4 different versions of the linux struct flock, and
amd64 kernel needs 3 of them compiled in, rather than replicating the same
code block twice more, move the body of the code into a few #defines
that can be expanded with the correct types in the linux[32]_sys_fcntl[64]()
functions.
Should fix problems running progams like skype running under linux32
emulation on amd64.

sync with head

Sync with HEAD

compat linux (and linux32) uid16 functions cleanup and fixes.

- Move uid16 functions to their own file linux_uid16.c, included by
  needed archs (arm, i386 and m68k).
- Add new MI types linux_{u,g}id16_t.
- Add macros to handle linux_uid16_t and uid_t conversions.
- Add linux_sys_getres{uid,gid}16 syscalls, to fix an overflow with
  bad sizes given to copyout when linux_sys_getres{uid,gid} are used.
- Update arm syscall table to use more uid16 functions.

sync with HEAD

Sync with HEAD

Sync with HEAD.

Sync with head.

Convert all the system call entry points from:
    int foo(struct lwp *l, void *v, register_t *retval)
to:
    int foo(struct lwp *l, const struct foo_args *uap, register_t *retval)
Fixup compat code to not write into 'uap' and (in some cases) to actually
pass a correctly formatted 'uap' structure with the right name to the
next routine.
A few 'compat' routines that just call standard ones have been deleted.
All the 'compat' code compiles (along with the kernels required to test
build it).
98% done by automated scripts.

Sync with HEAD.

Remove cn_lwp from struct componentname.  curlwp should be used
from on.  The NDINIT() macro no longer takes the lwp parameter and
associates the credentials of the calling thread with the namei
structure.

ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

Sync with HEAD.

Sync with head.

sync with head

Remove all the __P

Sync with HEAD. amd64 Xen support needs testing.

Remove the "struct lwp *" argument from all VFS and VOP interfaces.
The general trend is to remove it from all kernel interfaces and
this is a start.  In case the calling lwp is desired, curlwp should
be used.

quick consensus on tech-kern

Sync with HEAD.

Sync with HEAD.

Sync with HEAD

Cleanup. Remove a few linux syscalls definitions, now identical to
native ones (with stackgap and ALT_CHECK_xxx removal). No functional
changes expected.

sync with HEAD

sync with head.

Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.

Sync with HEAD.

Add compat_linux and exec_linux_elf lkm support for amd64:
- Add needed COMPAT_OSSAUDIO to GENERIC.
- Add missing includes needed by linux_syscallargs.h.
- Add lkm building.

sync with head.

Sync with head.

Sync with head.

sync with head.

Split the fcntl locking code out from its copyin/out.
Use to avoid all the stackgap stuff in compat code.

sync with head.

Change the way that emulations locate files within the emulation root to
  avoid having to allocate space in the 'stackgap'
  - which is very LWP unfriendly.
The additional code for non-emulation namei() is trivial, the reduction for
  the emulations is massive.
The vnode for a processes emulation root is saved in the cwdi structure
  during process exec.
If the emulation root the TRYEMULROOT flag are set, namei() will do an initial
  search for absolute pathnames in the emulation root, if that fails it will
  retry from the normal root.
".." at the emulation root will always go to the real root, even in the middle
  of paths and when expanding symlinks.
Absolute symlinks found using absolute paths in the emulation root will be
  relative to the emulation root (so /usr/lib/xxx.so -> /lib/xxx.so links
  inside the emulation root don't need changing).
If the root of the emulation would be returned (for an emulation lookup), then
  the real root is returned instead (matching the behaviour of emul_lookup,
  but being a cheap comparison here) so that programs that scan "../.."
  looking for the root dircetory don't loop forever.
The target for symbolic links is no longer mangled (it used to get the
  CHECK_ALT_xxx() treatment, so could get /emul/xxx prepended).
CHECK_ALT_xxx() are no more. Most of the change is deleting them, and adding
  TRYEMULROOT to the flags to NDINIT().
A lot of the emulation system call stubs could now be deleted.

Sync with head.

Sync with HEAD.

Update all the compat stuff to not use the 'stackgap' for processing
sys_stat() and friends, instead use do_sys_stat() and do_sys_fstat()
that write the answer into a kernel buffer (on stack) that can be
converted to the correct form and written the userspace.
I've test compiled a few kernels, and tested i386 netbsd1.6 ls.
Given I think I've fixed some bugs, it might be 50-50 with new ones.

- Make the proclist_lock a mutex. The write:read ratio is unfavourable,
  and mutexes are cheaper use than RW locks.
- LOCK_ASSERT -> KASSERT in some places.
- Hold proclist_lock/kernel_lock longer in a couple of places.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

- sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.

sync with head.

Acquire proclist_lock across the calls to p_find() and pg_find().

Merge newlock2 to head.

Remove support for SA. Ok core@.

sync with head.

sync with head.

Sync with head.

Checkpoint work in progress.

__unused removal on arguments; approved by core.

sync with head

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

Replace homegrown tests for FIFO (... & S_IFIFO) by S_ISFIFO. The old code
was "correct" by luck - we don't have any other file type whose S_IF* bits
in sys/stat.h overlap with S_IFIFO.

Originally discovered by Paul Stoeber in OpenBSD.

sync with head

sync with head

Use the LWP cached credentials where sane.

sync with head.

Sync with head.

Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.

sync with head.

integrate kauth.

Adapt to kernel authorization KPI.

merge ktrace-lwp.

Sync with HEAD. Here we go again...

64 bit inode changes.

- sprinkle const.
- add XXXUNCONST to the emul_find() pbuf argument free'ing. XXX: this needs
  an api change.
- avoid variable shadowing.

Add *xattr functions (they all return EOPNOTSUPP).

First work on COMPAT_LINUX/amd64
Process startup and dynamiclinking work, but processes hang due to
Linux arch_prctl(2) not being really supported yet.

Pull up revision 1.62 via patch (requested by bad in ticket #5762):
fix linux_sys_p{read|write}() to actually call correct syscall after
arg massage, i.e. sys_p{read|write} as appropriate; up to now, the functions
called sys_{read|write}() by mistake

sync with -current

Sync with HEAD.

sync with head.  xen and whitespace.  xen part is not finished.

Add nanosecond handling on the stat and stat64 code for the i386.

Sync with HEAD.

Hi Perry!

nuke trailing whitespace

Sync with HEAD.

Fix comments slighly

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD.

Pull up revision 1.63 (requested by jdolecek in ticket #764):
on Linux, unlink() fails with EISDIR if the target is directory,
rather than EPERM; to emulate this properly, translate the error to EISDIR
if the target patch exists and points to a directory
this fixes the 'ant clean' problem reported by Marc Recht on current-users@
with SuSE 9.1 libraries

on Linux, unlink() fails with EISDIR if the target is directory,
rather than EPERM; to emulate this properly, translate the error to EISDIR
if the target patch exists and points to a directory

this fixes the 'ant clean' problem reported by Marc Recht on current-users@
with SuSE 9.1 libraries

Sync with HEAD

fix linux_sys_p{read|write}() to actually call correct syscall after
arg massage, i.e. sys_p{read|write} as appropriate; up to now, the functions
called sys_{read|write}() by mistake

Apply the aborted ktrace-lwp changes to a specific branch.  This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it.  This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.

Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

properly FILE_USE/FILE_UNUSE descriptor in linux_sys_fcntl()
adresses PR kern/21628 by Wolfgang Solfrank

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

Alternative pid/proc allocater, removes all searches associated with pid
lookup and allocation, and any dependency on NPROC or MAXUSERS.
NO_PID changed to -1 (and renamed NO_PGID) to remove artificial limit
on PID_MAX.
As discussed on tech-kern.

make compat_linux struct file interlock friendly.

Merge the nathanw_sa branch.

LWPify new mkfifo code.

Sync with HEAD.

Use the already-filled-in-but-not-used native syscall args in
linux_sys_mknod().

linux_sys_mknod(): if creating device file (i.e. !fifo case), mask
the passed device number to only contain lower 16 bits; older glibc
appears to pass some junk in upper bits sometimes, resulting in incorrect
device entries being created

Problem initially analyzed by Thor Lancelot Simon.

sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work

Catch up to -current.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

	device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
  by using this grammer.

- Added the new naming convention.
  The name of the device switch must be <prefix>_[bc]devsw for auto-generation
  of device switch tables.

- The backward compatibility of loading block/character device
  switch by LKM framework is broken. This is necessary to convert
  from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
  We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
  the LKM framework will refer it to assign device major number dynamically.

catch up with -current on kqueue branch

Catch up to -current.

#include <sys/sa.h> before <sys/syscallargs.h>, to provide sa_upcall_t
now that <sys/param.h> doesn't include <sys/sa.h>.

(Behold the Power of Ed)

Replace the direct-access to devsw table with calling devsw API.

Remove an unreachable "break" after a return statement.

Catch up to -current.

implement getdents64; my full java tree builds now.

Catch up to -current.
(CVS: It's not just a program. It's an adventure!)

add explicit comment a FILE_USE() is not needed here

Fix problem with assumption non-socket == vnode in F_{G,S}ETOWN different way
(revisions 1.47 & 1.48 effectively backed off):
* for all but vnodes, just fallback to sys_fcntl(); assumming
  state of support for F_SETOWN/F_GETOWN and even hardcoding it here is
  not right (e.g. rev. 1.47 had this incorrect for DTYPE_PIPE)
* fallback to sys_fcntl() also for vnodes which don't represent tty
* don't need to use FILE_{,UN}USE() here, the code won't block while
  using the pointer
* add/fix some comments

correct placement for FILE_UNUSE [from Izumi Tsutsui]

- obey FILE_USE and FILE_UNUSE
- don't assume that non sockets point to vnodes.

make the stackgap_{init,alloc} functions MP friendly (i.e. pass struct proc *
in, instead of using curproc). While there add an optional size argument to
stackgap_init.

Catch up with -current.

Catch up to -current.

- add a real linux_sys___sysctl because the mib numbers are different.
  implement only the kernel version getting entries.
- make the signal conversion functions consistent; dest is arg 1.
- make linux_fakedev deal with block and char devices differently.
- add linux_sys_ugetrlimit, and flesh out the regular get/setrlimit so
  that they work properly.
- add linux_mmap2 [untested].
- bump kernel to 2.4.18, and make the date be valentine's day :-)
- linux_sys_*stat64 family was totally busted. Fix it.

tested only on i386.

Status:
	gdb, telnet, work
	jdk-1.4.0 extractor works, jdk still coredumps.

christos

Sync w/ -current.

Crude first cut at ARMLinux binary compatibility.  Successfully runs
"/emul/linux/bin/echo hello, world", dynamically linked.

Sync kqueue branch with -current.

Catch up to -current.

add RCSIDs (including regeneration of files as appropriate)

Catch up with -current.

Catch up to -current.
Again.

Fixes for mips support

Catch up to -current.

Update the kqueue branch to HEAD.

Commit my "devvp" changes to the thorpej-devvp branch.  This
replaces the use of dev_t in most places with a struct vnode *.

This will form the basic infrastructure for real cloning device
support (besides being architecurally cleaner -- it'll be good
to get away from using numbers to represent objects).

change LINUX_F_SETFL so that SIGIO handling for sockets
matches more closely
add support for NEW_PIPE to the SIGIO hack

Catch up with -current.

update to -current

seperate -> separate

Catch up to -current.

Linux does not send a SIGIO to the write end of a socket,
neither it does send any SIGIO for pipes. If async I/O
was requested, we keep the SS_ASYNC in struct socket flag
set, but we clear SB_ASYNC flags on the sending buffer
(for socket), and on the sending and the receiving buffer
(for pipes).

Because we do not alter to SS_ASYNC in struct socket,
the Linux process keeps a consistent view of async I/O
status if it attemps to read the async flag (SS_ASYNC)

This async I/O problem does matters, since some Linux
a programs such as the JDK request async I/O on pipes,
but they fail if they happen to get a SIGIO to the write
end of the pipe.

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.

Pull up revision 1.34 (via patch, requested by fvdl):
  Add some required Linux emulation bits to support the Linux
  version of VMware.

Initial commit of scheduler activations and lightweight process support.

Sync with HEAD.

use CHECK_ALT_SYMLINK() for lstat(2)
don't call stackgap_init() for pwrite(2) and pread(2), it's not necessary

Use CHECK_ALT_SYMLINK() instead CHECK_ALT_EXISTS() where appropriate.
This addresses kern/11757.

Added support for powerpc Linux compatibility

Sync with HEAD

Do alternate path checks for link(2).

Use CHECK_ALT_* for chown and lchown, missed in my previous commit.
Get *id16 calls right; most can be passed through directly, but
some need the 16->32 check for -1 values.

Only include the 16-bit chown/fchown/lchown stuff if on i386 or m68k.
This is a little ugly, but hey, so is Linux.

Add seperate entries for 16 bit uid/gid calls, so that border cases
like 0xffff can be handled better (not done yet).

Sync with HEAD.

add e_path (emulation path) to struct emul, which replaces emulation-specific
*_emul_path variables

change macros CHECK_ALT_{CREAT|EXIST} to use that, 'root' doesn't need
to be passed explicitly any more and *_CHECK_ALT_{CREAT|EXIST} are removed
change explicit emul_find() calls in probe functions to get the emulation
path from the checked exec switch entry's emulation

remove no longer needed header files

add e_flags and e_syscall to struct emul; these are unsed and empty for now

Update thorpej_scsipi to -current as of a month ago

Pull up revision 1.29 (requested by simonb):
  More carefully check length of user-supplied data, in particular
  make sure we don't overrun the available stack gap in stack gap
  allocations.

Pull up:
syssrc/sys/compat/common/compat_util.c                  1.16
syssrc/sys/compat/hpux/hpux_file.c                      1.14
syssrc/sys/compat/ibcs2/ibcs2_misc.c                    1.52
syssrc/sys/compat/ibcs2/ibcs2_stat.c                    1.16
syssrc/sys/compat/linux/common/linux_file.c             1.29
syssrc/sys/compat/linux/common/linux_misc_notalpha.c    1.58
syssrc/sys/compat/svr4/svr4_stat.c                      1.40
syssrc/sys/compat/svr4/svr4_stream.c                   1.40,1.41

Approved by thorpej and jhawk.

Emulation stackgap sanity checks, based partly on fixes from
FreeBSD-SA00:42.

Change stackgap_alloc to bounds-check the allocation vs. the stack
gap, returning NULL if there isn't room for the allocation.

Change emul_find() to check for a NULL return from stackgap_alloc()
and convert that into ENAMETOOLONG.

Reorder various emulation syscalls so that all *_CHECK_ALT_{EXIST,CREAT}
calls (which turn into emul_find() under the covers come *after* small,
fixed-size stackgap_alloc() calls.

Clean up ibcs2 {get,set}groups.

Add range checks to svr4_stream.c

Emulation stackgap sanity checks, based partly on fixes from
FreeBSD-SA00:42.

Change stackgap_alloc to bounds-check the allocation vs. the stack
gap, returning NULL if there isn't room for the allocation.

Change emul_find() to check for a NULL return from stackgap_alloc()
and convert that into ENAMETOOLONG.

Reorder various emulation syscalls so that all *_CHECK_ALT_{EXIST,CREAT}
calls (which turn into emul_find() under the covers come *after* small,
fixed-size stackgap_alloc() calls.

Clean up ibcs2 {get,set}groups.

Pull up to last week's -current.

Add proper stub code to make emulation of Linux's pread(2) and pwrite(2)
work. Fixes PR kern/8945 by Dave Sainty.

const poisoning.

The siginfo include line is not needed here anymore.

Assign my copyright to TNF. Merge with others were appropriate.
Regen syscall files after script change.

Attempt to fix the mess.

Split compat/linux/linux_file.c into common and multi-architechture parts.

* Use sys___posix_{chown,fchown}() instead of sys_{chown,fchown}().
* Change reference from sys_posix_rename() to sys___posix_rename().

Fix the shared library versioning snafu caused by the recent changes
to the stat(2) family and msync(2).  This uses a primitive function
versioning scheme.

This reverts the libc shared library major version from 13 to 12, and
adds a few new interfaces to bring us to libc version 12.20.

From Frank van der Linden <fvdl@NetBSD.ORG>.

Fix bogosity in mknod(2) translation.

check for st_nlink overflow

Update marc-pcmcia branch from trunk.

Add missing preparation of F_GETLK parameters in linux_sys_fcntl(); fixes PR
port-i386/4083 from Matthias Scheler <tron@lyssa.owl.de>, but vastly cleaned
up as previously suggested by myself.

Use sys_posix_rename() instead of sys_rename() as it's the behaviour of the
native implementation.

printf -> kprintf, sprintf -> ksprintf

Update list of Linux syscalls and implement the ones that are likely to be
used and doable.

Prototyping changes.

Work around calling the NetBSD fcntl(F_{G,S}ETOWN) for now; it is too
restrictive to implement the Linux equivalent (and perhaps too restrictive
overall).

Prefix names of system call implementation functions with `sys_'.

Make system calls conform to a standard prototype and bring those
prototypes into scope.

Fix some bugs & typing problems.

Add a hook for MD ioctl calls, plus a couple of more changes to make
svgalib binaries work on the i386

Rearrange #includes.

mkdir() has 2 arguments.. fixes PR 1248 (from Brad Spencer)

Fix totally bogus implementation of a few fcntl() calls. I think I'll go
live on a deserted island now..

Use compat_util.[ch].

* Changed to use generic ELF code from kern/exec_elf.c (which was taken
  from the svr4 exec code plus the linux compat mods)
* Include file change
* Add multicast sockopts (from John Brezak)

Fix conversion of `type' and `whence' values in struct flock.

Added a few more system calls.
More consistent alternate root file semantics throughout.

Added Linux compat code.