Commit Graph

410 Commits

Author SHA1 Message Date
John Baldwin
b7e23e826c - Replace wait1() with a kern_wait() function that accepts the pid,
options, status pointer and rusage pointer as arguments.  It is up to
  the caller to copyout the status and rusage to userland if needed.  This
  lets us axe the 'compat' argument and hide all that functionality in
  owait(), by the way.  This also cleans up some locking in kern_wait()
  since it no longer has to drop locks around copyout() since all the
  copyout()'s are deferred.
- Convert owait(), wait4(), and the various ABI compat wait() syscalls to
  use kern_wait() rather than wait1() or wait4().  This removes a bit
  more stackgap usage.

Tested on:	i386
Compiled on:	i386, alpha, amd64
2004-03-17 20:00:00 +00:00
Tim J. Robbins
7b0d017245 Use vfs_nmount() to mount linprocfs filesystems in linux_mount();
linprocfs doesn't support the old mount interface.
2004-03-16 09:05:56 +00:00
Tim J. Robbins
2ba9b76668 Correct size argument passed to copyinstr() in linux_mount(): mntfromname
and mntonname are both MNAMELEN characters long, not MFSNAMELEN.
2004-03-16 08:37:19 +00:00
Poul-Henning Kamp
651b11eaf2 Remove unused second arg to vfinddev().
Don't call addaliasu() on VBLK nodes.
2004-03-11 16:33:11 +00:00
Poul-Henning Kamp
816d62bbb9 Device megapatch 5/6:
Remove the unused second argument from udev2dev().

Convert all remaining users of makedev() to use udev2dev().  The
semantic difference is that udev2dev() will only locate a pre-existing
dev_t, it will not line makedev() create a new one.

Apart from the tiny well controlled windown in D_PSEUDO drivers,
there should no longer be any "anonymous" dev_t's in the system
now, only dev_t's created with make_dev() and make_dev_alias()
2004-02-21 21:32:15 +00:00
Bruce M Simpson
a1166f2439 Add BSD compatibility tty ioctls LINUX_TIOCSBRK and LINUX_TIOCCBRK. This
addition appears to allow VMware 3 Workstation to operate with nmdm(4)
as a virtual COM device.

Tested by:	Guido van Rooij
2004-02-19 12:38:12 +00:00
John Baldwin
91d5354a2c Locking for the per-process resource limits structure.
- struct plimit includes a mutex to protect a reference count.  The plimit
  structure is treated similarly to struct ucred in that is is always copy
  on write, so having a reference to a structure is sufficient to read from
  it without needing a further lock.
- The proc lock protects the p_limit pointer and must be held while reading
  limits from a process to keep the limit structure from changing out from
  under you while reading from it.
- Various global limits that are ints are not protected by a lock since
  int writes are atomic on all the archs we support and thus a lock
  wouldn't buy us anything.
- All accesses to individual resource limits from a process are abstracted
  behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return
  either an rlimit, or the current or max individual limit of the specified
  resource from a process.
- dosetrlimit() was renamed to kern_setrlimit() to match existing style of
  other similar syscall helper functions.
- The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit()
  (it didn't used the stackgap when it should have) but uses lim_rlimit()
  and kern_setrlimit() instead.
- The svr4 compat no longer uses the stackgap for resource limits calls,
  but uses lim_rlimit() and kern_setrlimit() instead.
- The ibcs2 compat no longer uses the stackgap for resource limits.  It
  also no longer uses the stackgap for accessing sysctl's for the
  ibcs2_sysconf() syscall but uses kernel_sysctl() instead.  As a result,
  ibcs2_sysconf() no longer needs Giant.
- The p_rlimit macro no longer exists.

Submitted by:	mtm (mostly, I only did a few cleanups and catchups)
Tested on:	i386
Compiled on:	alpha, amd64
2004-02-04 21:52:57 +00:00
Don Lewis
ff5f695e78 VOP_GETATTR() wants the vnode passed to it to be locked. Instead
of adding the code to lock and unlock the vnodes and taking care
to avoid deadlock, simplify linux_emul_convpath() by comparing the
vnode pointers directly instead of comparing their va_fsid and
va_fileid attributes.  This allows the removal of the calls to
VOP_GETATTR().
2004-01-14 22:38:03 +00:00
Alan Cox
277b62040d Lock the traversal of the vm object list. Use TAILQ_FOREACH consistently. 2004-01-02 19:29:31 +00:00
Bruce Evans
3db2a84395 Quick fix for LINT breakage caused by interface changes in accept(2), etc.
The log message for rev.1.160 of kern/uipc_syscalls.c and associated
changes only claimed to add restrict qualifiers (which have no effect in
the kernel so they probably shouldn't be added), but the following
interface changes were also made:
- caddr_t to `void *' and `struct sockaddr_t *'
- `int *' to `socklen_t *'.
These interface changes are not quite null, and this fix is quick (like
the changes in uipc_syscalls 1.160) because it uses bogus casts instead
of complete bounds-checked conversions.

Things should be fixed better when the conversions can be done without
using the stack gap.  linux_check_hdrincl() already uses the stack gap
and is fixed completely though the type mismatches in it were not fatal
(there were only fatal type mismatches from unopaquing pointers to
[o]sockaddr't's -- the difference between accept()'s args and oaccept()'s
args is now non-opaque, but this is not reflected in their args structs).
2003-12-25 09:59:02 +00:00
Alexander Kabaev
501f5ff123 Do not call VOP_GETATTR in getdents function. It does not serve any
purpose and the resulting vattr structure was ignored. In addition,
the VOP_GETATTR call was made with no vnode lock held, resulting in
vnode locking violation panic with debug kernels.

Reported by:	truckman

Approved by:	re@ (rwatson)
2003-11-19 04:12:32 +00:00
Robert Watson
0b92da272c Add a MAC check for VOP_LOOKUP() in the Linux getwcd() implementation.
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-11-17 18:57:20 +00:00
Maxim Sobolev
d09c47acd9 Pull latest changes from OpenBSD:
- improve sysinfo(2) syscall;
- add dummy fadvise64(2) syscall;
- add dummy *xattr(2) family of syscalls;
- add protos for the syscalls 222-225, 238-249 and 253-267;
- add exit_group(2) syscall, which is currently just wired to exit(2).

Obtained from:  OpenBSD
MFC after:      2 weeks
2003-11-16 15:07:10 +00:00
David Malone
5a8a13e0fc Use kern_sendit rather than sendit for the Linux send* syscalls.
This means we can avoid using the stack gap for most send* syscalls
now (it is still used in the IP_HDRINCL case).
2003-11-09 17:04:04 +00:00
Eric Anholt
0b399cc8a6 Prevent leaking of fsid to non-root users in linux_statfs and linux_fstatfs.
Matches native syscalls now.

PR:		kern/58793
Submitted by:	David P. Reese Jr. <daver@gomerbud.com>
MFC after:	1 week
2003-11-05 23:52:54 +00:00
Max Khon
2332251c6a Back out the following revisions:
1.36      +73 -60    src/sys/compat/linux/linux_ipc.c
1.83      +102 -48   src/sys/kern/sysv_shm.c
1.8       +4 -0      src/sys/sys/syscallsubr.h

That change was intended to support vmware3, but
wantrem parameter is useless because vmware3 uses SYSV shared memory
to talk with X server and X server is native application.
The patch worked because check for wantrem was not valid
(wantrem and SHMSEG_REMOVED was never checked for SHMSEG_ALLOCATED segments).

Add kern.ipc.shm_allow_removed (integer, rw) sysctl (default 0) which when set
to 1 allows to return removed segments in
shm_find_segment_by_shmid() and shm_find_segment_by_shmidx().

MFC after:	1 week
2003-11-05 01:53:10 +00:00
Brooks Davis
9bf40ede4a Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
Tim J. Robbins
1d2d5501f9 Reject negative ngrp arguments in linux_setgroups() and linux_setgroups16();
stops users being able to cause setgroups to clobber the kernel stack by
copying in data past the end of the linux_gidset array.
2003-10-21 11:00:33 +00:00
Sam Leffler
62a531a702 fix build: linux_to_bsd_msf_lba is no longer used because of previous commit 2003-10-20 17:56:10 +00:00
Søren Schmidt
a55140ce07 We dont support CDROMREADAUDIO anymore. 2003-10-20 09:51:00 +00:00
Mitsuru IWASAKI
84b11cd80a Fix some problems in linux_sendmsg() and linux_recvmsg().
- Allocate storage for uap->msg always because it is copyin()'ed in
   native sendmsg().
 - Convert sockopt level from Linux to FreeBSD after native recvmsg() calling.
 - Some cleanups.

Tested with:	Oracle 9i shared server connection mode.

MFC after:	1 week
2003-10-11 15:08:32 +00:00
Bruce Evans
34eec0a169 Restored a non-egregious cast so that this file compiles on i386's
with 64-bit longs again.  This was fixed in rev.1.42 but the fix
rotted non-fatally in rev.1.105 and fatally in rev.1.137.

Many more non-egregrious casts are strictly required for conversions
from semi-opaque types to pointers, but we avoid most of them by using
types that are almost certain to be compatible with uintptr_t for
representing pointers (e.g., vm_offset_t).  Here we don't really want
the u_longs, but we have them because a.out.h and its support code
doesn't use typedefs (it uses unsigned in V7 and unsigned long in
FreeBSD) and is too obsolete to fix now.
2003-09-07 13:03:13 +00:00
Dag-Erling Smørgrav
7576b4b4c0 Try to make 'uname -a' look more like it does on Linux:
- cut the version string at the newline, suppressing information about
   who built the kernel and in what directory.  Most of this information
   was already lost to truncation.

 - on i386, return the precise CPU class (if known) rather than just
   "i386".  Linux software which uses this information to select
   which binary to run often does not know what to make of "i386".
2003-07-29 10:03:15 +00:00
Poul-Henning Kamp
a8d43c90af Add a "int fd" argument to VOP_OPEN() which in the future will
contain the filedescriptor number on opens from userland.

The index is used rather than a "struct file *" since it conveys a bit
more information, which may be useful to in particular fdescfs and /dev/fd/*

For now pass -1 all over the place.
2003-07-26 07:32:23 +00:00
Poul-Henning Kamp
567104a148 Add a new function swap_pager_status() which reports the total size of the
paging space and how much of it is in use (in pages).

Use this interface from the Linuxolator instead of groping around in the
internals of the swap_pager.
2003-07-18 10:26:09 +00:00
Marcel Moolenaar
19acf030a2 Don't map LINUX_POSIX_VDISABLE to _POSIX_VDISABLE and vice versa for
the VMIN and VTIME members of the c_cc array. These members are not
special control characters. By not excluding these members we
changed the noncanonical mode input processing when both members
were 0 on entry (=LINUX_POSIX_VDISABLE) as we would remap them to 255
(=_POSIX_VDISABLE). See termios(4) case A for how that screws up
your terminal I/O.

PR: 23173
Originator: Bjarne Blichfeldt <bbl@dk.damgaard.com>
Patch by: Boris Nikolaus <bn@dali.tellique.de> (original submission)
	  Philipp Mergenthaler <philipp.mergenthaler@stud.uni-karlsruhe.de>
Reminders by: Joseph Holland King <gte743n@cad.gatech.edu>
MFC after: 5 days
2003-06-28 19:32:07 +00:00
Poul-Henning Kamp
3b6d965263 Add a f_vnode field to struct file.
Several of the subtypes have an associated vnode which is used for
stuff like the f*() functions.

By giving the vnode a speparate field, a number of checks for the specific
subtype can be replaced simply with a check for f_vnode != NULL, and
we can later free f_data up to subtype specific use.

At this point in time, f_data still points to the vnode, so any code I
might have overlooked will still work.
2003-06-22 08:41:43 +00:00
David E. O'Brien
16dbc7f228 Use __FBSDID(). 2003-06-10 21:29:12 +00:00
Martin Blapp
f130dcf22a Change the semantics of sysv shm emulation to take a additional
argument to the functions shm{at,ctl}1 and shm_find_segment_by_shmid{x}.
The BSD semantics didn't allow the usage of shared segment after
being marked for removal through IPC_RMID.

The patch involves the following functions:
  - shmat
  - shmctl
  - shm_find_segment_by_shmid
  - shm_find_segment_by_shmidx
  - linux_shmat
  - linux_shmctl

Submitted by:	Orlando Bassotto <orlando.bassotto@ieo-research.it>
Reviewed by:	marcel
2003-05-05 09:22:58 +00:00
Martin Blapp
a966b13d67 Initialize tbuf in newstat_copyout() too.
Reviewed by:	phk
2003-04-29 17:03:22 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
Martin Blapp
616aa29a0e Do the same thing for stat64_copyout() as we already
do for newstat_copyout().

Lie about disk drives which are character devices
in FreeBSD but block devices under Linux.

PR:		37227
Submitted by:	Vladimir B. Grebenschikov <vova@sw.ru>
Reviewed by:	phk
MFC after:	2 weeks
2003-04-29 12:36:03 +00:00
John Baldwin
2f7ed219b2 Argh! We want to return the old signal set when the error return is zero
(i.e. success), not non-zero (failure).

Submitted by:	tegge
Pointy hat to:	jhb
2003-04-28 19:43:11 +00:00
John Baldwin
19dde5cd3b Use a switch to convert the Linux sigprocmask flags to the equivalent
FreeBSD flags instead of just adding one to the Linux flags.  This should
be identical to the previous version except that I have at least one report
of this patch fixing problems people were having with Linux apps after my
last commit to this file.  It is safer to use the switch then to make
assumptions about the flag values anyways, esp. since we currently use
MD defines for the values of the flags and this is MI code.

Tested by:	Michael Class <michael_class@gmx.net>
2003-04-25 19:26:18 +00:00
Eric Anholt
caa18809df Add an ioctl handler for the DRM. This removes the need for the DRM_LINUX
option, which has been a source of frustration for many users.
2003-04-24 23:36:35 +00:00
John Baldwin
c6004a6202 Fix a lock order reversal. Unlock the proc before calling fget().
Reported by:	kris
2003-04-23 18:13:26 +00:00
John Baldwin
fe8cdcae87 - Replace inline implementations of sigprocmask() with calls to
kern_sigprocmask() in the various binary compatibility emulators.
- Replace calls to sigsuspend(), sigaltstack(), sigaction(), and
  sigprocmask() that used the stackgap with calls to the corresponding
  kern_sig*() functions instead without using the stackgap.
2003-04-22 18:23:49 +00:00
John Baldwin
9d8643eca6 Don't hold the proc lock while performing sigset conversions on local
variables.
2003-04-17 22:07:56 +00:00
John Baldwin
8804bf6b03 Use local struct proc variables to reduce repeated td->td_proc dereferences
and improve readability.
2003-04-17 22:02:47 +00:00
Poul-Henning Kamp
a300701213 Don't include <sys/disklabel.h> 2003-04-16 20:57:35 +00:00
John Baldwin
20b04da89c Explicitly cast a l_ulong to an unsigned long to make all arch's happy
with the printf format.
2003-04-16 20:43:10 +00:00
John Baldwin
760eb2e033 Fix printf format in a debug printf. 2003-04-16 20:07:48 +00:00
Poul-Henning Kamp
95082542bb Add #include <sys/conf.h> so we don't rely on <sys/disk.h> doing it. 2003-04-01 12:34:47 +00:00
Jeff Roberson
4093529dee - Move p->p_sigmask to td->td_sigmask. Signal masks will be per thread with
a follow on commit to kern_sig.c
 - signotify() now operates on a thread since unmasked pending signals are
   stored in the thread.
 - PS_NEEDSIGCHK moves to TDF_NEEDSIGCHK.
2003-03-31 22:49:17 +00:00
Poul-Henning Kamp
10c665ef8f Fix an XXX: and implement LINUX_BLKGETSIZE correctly. 2003-03-28 08:58:11 +00:00
John Baldwin
35eb8c5aa2 Add a cleanup function to destroy the osname_lock and call it on module
unload.

Submitted by:	gallatin
Reported by:	Martin Karlsson <mk-freebsd@bredband.net>
2003-03-26 18:29:44 +00:00
John Baldwin
31566c96f4 Use td->td_ucred instead of td->td_proc->p_ucred. 2003-03-20 21:17:40 +00:00
Poul-Henning Kamp
cc34e37e5b Backout the getcwd changes, a more comprehensive effort will be needed. 2003-03-20 10:40:45 +00:00
Poul-Henning Kamp
9eaf5abceb (This commit certainly increases the need for a wash&clean of vfs_cache.c,
but I decided that it was important for this patch to not bit-rot, and
since it is mainly moving code around, the total amount of entropy is
epsilon /phk)

This is a patch to move the common parts of linux_getcwd() back into
kern/vfs_cache.c so that the standard FreeBSD libc getcwd() can use it's
extended functionality.  The linux syscall linux_getcwd() in
compat/linux/linux_getcwd.c has been rewritten to use it too.  It should
be possible to simplify libc's getcwd() after this.  No doubt this code
needs some cleaning up, since I've left in the sysctl variables I used
for debugging.

PR:	48169
Submitted by:	James Whitwell <abacau@yahoo.com.au>
2003-03-17 12:21:08 +00:00
John Baldwin
b62f75cf44 - Change the linux_[gs]et_os{name, release, s_version}() functions to
take a thread instead of a proc for their first argument.
- Add a mutex to protect the system-wide Linux osname, osrelease, and
  oss_version variables.
- Change linux_get_prison() to take a thread instead of a proc for its
  first argument and to use td_ucred rather than p_ucred.  This is ok
  because a thread's prison does not change even though it's ucred might.
- Also, change linux_get_prison() to return a struct prison * instead of
  a struct linux_prison * since it returns with the struct prison locked
  and this makes it easier to safely unlock the prison when we are done
  messing with it.
2003-03-13 22:45:43 +00:00