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Commit Graph

1292 Commits

Author SHA1 Message Date
Konstantin Belousov
9d79ec20fb Slightly modernize realpath(3).
SUSv4 requires that implementation returns EINVAL if supplied path is NULL,
and ENOENT if path is empty string [1].
Bring prototype in conformance with SUSv4, adding restrict keywords.
Allow the resolved path buffer pointer be NULL, in which case realpath(3)
allocates storage with malloc().

PR:	kern/121897 [1]
MFC after:	2 weeks
2010-04-20 10:16:44 +00:00
Hajimu UMEMOTO
e622b47989 Add capability to use a db version of services. It is enabled by
specifying `db' as source of service in /etc/nsswitch.conf.

MFC after:	2 weeks
2010-04-04 08:31:03 +00:00
Juli Mallett
745b187534 Be like stdlib.h and bring in a wchar_t definition and use it to prototype
wcstoimax and wcstoumax, rather than spelling it __wchar_t.  This is necessary
to use these functions in C++ where wchar_t is different to __wchar_t and is
a built-in type.

It may be better to use __wchar_t here and to simply define __wchar_t as being
wchar_t in C++ mode rather than to bring in wchar_t, but this is less invasive
and follows our existing practice, and restores wchar_t usage in this file to
what it was before r1.8.
2010-03-31 02:12:24 +00:00
Pietro Cerutti
071ab531db - Remove const'ness from dlerror(3) prototype, for consistency with POSIX.
Approved by:	cognet
MFC after:	1 week
2010-03-24 15:59:51 +00:00
Ed Schouten
763ed73371 Trim down libcompat by removing <regexp.h>.
Erwin ran an exp-run with libcompat and <regexp.h> removed. It turns out
the regexp library is almost entirely unused. In fact, it looks like it
is sometimes used by accident. Because these function names clash with
libc's <regex.h>, some application use both <regex.h> and libcompat,
which means they link against the wrong regex library.

This commit removes the regexp library and reimplements re_comp() and
re_exec() using <regex.h>. It seems the grammar of the regular
expressions accepted by these functions is similar to POSIX EREs.

After this commit, 1 low-profile port will be broken, but the maintainer
already has a patch for it sitting in his mailbox.
2010-03-14 10:18:58 +00:00
Ed Schouten
a6c03411f2 Add warnings to <regexp.h> and <sys/timeb.h>.
These header files only provide functionality that can be used in
combination with libcompat. In order to prevent people from including
them without any actual use (which happens a lot with <sys/timeb.h>),
put a warning here to make people more aware.

This means we have to lower WARNS for libcompat, which is no big deal.
2010-03-09 21:01:12 +00:00
Ed Schouten
8176ad3626 Remove last traces of <utmp.h>. 2010-03-03 18:30:10 +00:00
Warner Losh
2cca9f8f68 Remove clause 3 from Berkeley copyrights. Add a few $FreeBSD$'s. 2010-02-16 19:46:46 +00:00
Warner Losh
f2556687c6 Remove the Berkeley clause 3's.
Add a few $FreeBSD$
2010-02-16 19:39:50 +00:00
Warner Losh
69235413d9 Remove NetBSD Foundation clauses 3 & 4. They eliminated those clauses
last year.
2010-02-16 19:28:10 +00:00
Edward Tomasz Napierala
b3f9d8c804 Add gmountver, disk mount verification GEOM class.
Note that due to e.g. write throttling ('wdrain'), it can stall all the disk
I/O instead of just the device it's configured for.  Using it for removable
media is therefore not a good idea.

Reviewed by:	pjd (earlier version)
2010-01-16 09:52:49 +00:00
Ed Schouten
88b69f52ee Phase out ttyslot(3).
The ttyslot() function was originally part for SUSv1, marked LEGACY in
SUSv2 and removed later on. This function only makes sense when using
utmp(5), because it was used to determine the offset of the record for
the controlling TTY. It makes little sense to keep it here, because the
new utmpx file format doesn't index based on TTY slots.
2010-01-14 05:35:32 +00:00
Ed Schouten
5046a4d149 Remove <utmp.h> and its corresponding manual page. 2010-01-13 19:03:48 +00:00
Ed Schouten
a627ac61ab Implement <utmpx.h>.
The utmpx interface is the standardized interface of the user accounting
database. The standard only defines a subset of the functions that were
present in System V-like systems.

I'd like to highlight some of the traits my implementation has:

- The standard allows the on-disk format to be different than the
  in-memory representation (struct utmpx). Most operating systems don't
  do this, but we do. This allows us to keep our ABI more stable, while
  giving us the opportunity to modify the on-disk format. It also allows
  us to use a common file format across different architectures (i.e.
  byte ordering).

- Our implementation of pututxline() also updates wtmp and lastlog (now
  called utx.log and utx.lastlogin). This means the databases are more
  likely to be in sync.

- Care must be taken that our implementation discard any fields that are
  not applicable. For example, our DEAD_PROCESS records do not hold a
  TTY name. Just a time stamp, a record identifier and a process
  identifier. It also guarantees that strings (ut_host, ut_line and
  ut_user) are null terminated. ut_id is obviously not null terminated,
  because it's not a string.

- The API and its behaviour should be conformant to POSIX, but there may
  be things that slightly deviate from the standard. This implementation
  uses separate file descriptors when writing to the log files. It also
  doesn't use getutxid() to search for a field to overwrite. It uses an
  allocation strategy similar to getutxid(), but prevents DEAD_PROCESS
  records from accumulating.

Make sure libulog doesn't overwrite the manpages shipped with our C
library. Also keep the symbol list in Symbol.map sorted.

I'll bump __FreeBSD_version later this evening. I first want to convert
everything to <utmpx.h> and get rid of <utmp.h>.
2010-01-13 17:29:55 +00:00
Konstantin Belousov
c4ecd13b77 Move scandir(3) and alphasort(3) into XSI namespace.
Noted and reviewed by:	bde
MFC after:	2 weeks
2010-01-05 20:17:13 +00:00
David Xu
9b0f1823b5 Use umtx to implement process sharable semaphore, to make this work,
now type sema_t is a structure which can be put in a shared memory area,
and multiple processes can operate it concurrently.
User can either use mmap(MAP_SHARED) + sem_init(pshared=1) or use sem_open()
to initialize a shared semaphore.
Named semaphore uses file system and is located in /tmp directory, and its
file name is prefixed with 'SEMD', so now it is chroot or jail friendly.
In simplist cases, both for named and un-named semaphore, userland code
does not have to enter kernel to reduce/increase semaphore's count.
The semaphore is designed to be crash-safe, it means even if an application
is crashed in the middle of operating semaphore, the semaphore state is
still safely recovered by later use, there is no waiter counter maintained
by userland code.
The main semaphore code is in libc and libthr only has some necessary stubs,
this makes it possible that a non-threaded application can use semaphore
without linking to thread library.
Old semaphore implementation is kept libc to maintain binary compatibility.
The kernel ksem API is no longer used in the new implemenation.

Discussed on: threads@
2010-01-05 02:37:59 +00:00
Ed Schouten
f40ea8b948 This should read #if __BSD_VISIBLE instead of #ifdef __BSD_VISIBLE. 2010-01-04 18:46:54 +00:00
Konstantin Belousov
4176dd5267 Modernize scandir(3) and alphasort(3) interfaces according to the IEEE
Std 1003.1-2008. Both Linux and Solaris conforms to the new definitions,
so we better follow too (older glibc used old BSDish alphasort prototype
and corresponding type of the comparision function for scandir). While
there, change the definitions of the functions to ANSI C and fix several
style issues nearby.

Remove requirement for "sys/types.h" include for functions from manpage.

POSIX also requires that alphasort(3) sorts as if strcoll(3) was used,
but leave the strcmp(3) call in the function for now.

Adapt in-tree callers of scandir(3) to new declaration. The fact that
select_sections() from catman(1) could modify supplied struct dirent is
a bug.

PR:	standards/142255
MFC after:	2 weeks
2010-01-04 15:40:17 +00:00
Jilles Tjoelker
8ca5ff35e6 Remove the current directory from _PATH_STDPATH. 2009-12-30 15:44:36 +00:00
Olivier Houchard
536fb65904 Don't name parameters, for consistency with the rest of the file, and because
it breaks third-party apps.

Submitted by:	gahr
2009-12-22 22:15:52 +00:00
Ed Schouten
f14ad5fa40 Decompose <sys/termios.h>.
The <sys/termios.h> header file is hardlinked to <termios.h>. It
contains both the structures and the flag definitions, but also the C
library interface that's implemented by the C library.

This header file has the typical problem of including too many random
things and being badly ordered. Instead of trying to fix this, decompose
it into two header files:

- <sys/_termios.h>, which contains struct termios and the flags.
- <termios.h>, which includes <sys/_termios.h> and contains the C
  library interface.

This means userspace has to include <termios.h> for struct termios,
while kernelspace code has to include <sys/tty.h>. Also add a
<sys/termios.h>, which prints a warning message before including
<termios.h>. I am aware that there are some applications that use this
header file as well.
2009-11-28 23:50:48 +00:00
Konstantin Belousov
9a6ceacede Implement sighold, sigignore, sigpause, sigrelse, sigset functions
from SUSv4 XSI. Note that the functions are obsoleted, and only
provided to ease porting from System V-like systems. Since sigpause
already exists in compat with different interface, XSI sigpause is
named xsi_sigpause.

Reviewed by:	davidxu
MFC after:	3 weeks
2009-11-26 13:49:37 +00:00
Robert Watson
a502a84d5a Add basename_r(3) to complement basename(3). basename_r(3) which accepts
a caller-allocated buffer of at least MAXPATHLEN, rather than using a
global buffer.

MFC after:	1 month
Sponsored by:	Google
2009-10-06 14:05:57 +00:00
Edwin Groothuis
a250649bd8 Modified locale(1) to be able to show the altmon_X fields and the [cxX]_fmt's.
Also modify the "-k list" option to display only fields with a certain prefix.

MFC after:	1 week
2009-10-05 07:11:19 +00:00
Scott Long
763fae7918 ntroduce mfiutil, a basic utility for managing LSI SAS-RAID & Dell PERC5/6
controllers.  Controller, array, and drive status can be checked, basic
attributes can be changed, and arrays and spares can be created and deleted.
Controller firmware can also be flashed.

This does not replace MegaCLI, found in ports, as that is officially sanctioned
and supported by LSI and includes vastly more functionality.  However, mfiutil
is open source and guaranteed to provide basic functionality, which can be
especially useful if you have a problem and can't get MegaCLI to work.

Approved by:    re
Obtained from:  Yahoo! Inc.
2009-08-13 23:18:45 +00:00
Konstantin Belousov
49e8c06b45 Implement RTLD_NOLOAD flag for dlopen(3).
Requested and tested by:	jkim
Reviewed by:	kan
Approved by:	re (kensmith)
2009-07-17 19:45:42 +00:00
Scott Long
52c9ce25d8 Separate the parallel scsi knowledge out of the core of the XPT, and
modularize it so that new transports can be created.

Add a transport for SATA

Add a periph+protocol layer for ATA

Add a driver for AHCI-compliant hardware.

Add a maxio field to CAM so that drivers can advertise their max
I/O capability.  Modify various drivers so that they are insulated
from the value of MAXPHYS.

The new ATA/SATA code supports AHCI-compliant hardware, and will override
the classic ATA driver if it is loaded as a module at boot time or compiled
into the kernel.  The stack now support NCQ (tagged queueing) for increased
performance on modern SATA drives.  It also supports port multipliers.

ATA drives are accessed via 'ada' device nodes.  ATAPI drives are
accessed via 'cd' device nodes.  They can all be enumerated and manipulated
via camcontrol, just like SCSI drives.  SCSI commands are not translated to
their ATA equivalents; ATA native commands are used throughout the entire
stack, including camcontrol.  See the camcontrol manpage for further
details.  Testing this code may require that you update your fstab, and
possibly modify your BIOS to enable AHCI functionality, if available.

This code is very experimental at the moment.  The userland ABI/API has
changed, so applications will need to be recompiled.  It may change
further in the near future.  The 'ada' device name may also change as
more infrastructure is completed in this project.  The goal is to
eventually put all CAM busses and devices until newbus, allowing for
interesting topology and management options.

Few functional changes will be seen with existing SCSI/SAS/FC drivers,
though the userland ABI has still changed.  In the future, transports
specific modules for SAS and FC may appear in order to better support
the topologies and capabilities of these technologies.

The modularization of CAM and the addition of the ATA/SATA modules is
meant to break CAM out of the mold of being specific to SCSI, letting it
grow to be a framework for arbitrary transports and protocols.  It also
allows drivers to be written to support discrete hardware without
jeopardizing the stability of non-related hardware.  While only an AHCI
driver is provided now, a Silicon Image driver is also in the works.
Drivers for ICH1-4, ICH5-6, PIIX, classic IDE, and any other hardware
is possible and encouraged.  Help with new transports is also encouraged.

Submitted by:	scottl, mav
Approved by:	re
2009-07-10 08:18:08 +00:00
Edward Tomasz Napierala
c38898116a There is an optimization in chmod(1), that makes it not to call chmod(2)
if the new file mode is the same as it was before; however, this
optimization must be disabled for filesystems that support NFSv4 ACLs.
Chmod uses pathconf(2) to determine whether this is the case - however,
pathconf(2) always follows symbolic links, while the 'chmod -h' doesn't.

This change adds lpathconf(3) to make it possible to solve that problem
in a clean way.

Reviewed by:	rwatson (earlier version)
Approved by:	re (kib)
2009-07-08 15:23:18 +00:00
Xin LI
efa952cd30 Merge fmtcheck() prototype change.
Obtained from:	NetBSD
2009-06-23 23:53:35 +00:00
Alexander Kabaev
e7733ffa39 Re-do r192913 in less intrusive way. Only do IP_RECVDSTADDR/IP_SENDSRCADDR
dace for UPDv4 sockets bound to INADDR_ANY. Move the code to set
IP_RECVDSTADDR/IP_SENDSRCADDR into svc_dg.c, so that both TLI and non-TLI
users will be using it.

Back out my previous commit to mountd. Turns out the problem was affecting
more than one binary so it needs to me addressed in generic rpc code in
libc in order to fix them all.

Reported by:	lstewart
Tested by:	lstewart
2009-06-18 17:10:43 +00:00
John Baldwin
c4f16b69e1 Add a new 'void closefrom(int lowfd)' system call. When called, it closes
any open file descriptors >= 'lowfd'.  It is largely identical to the same
function on other operating systems such as Solaris, DFly, NetBSD, and
OpenBSD.  One difference from other *BSD is that this closefrom() does not
fail with any errors.  In practice, while the manpages for NetBSD and
OpenBSD claim that they return EINTR, they ignore internal errors from
close() and never return EINTR.  DFly does return EINTR, but for the common
use case (closing fd's prior to execve()), the caller really wants all
fd's closed and returning EINTR just forces callers to call closefrom() in
a loop until it stops failing.

Note that this implementation of closefrom(2) does not make any effort to
resolve userland races with open(2) in other threads.  As such, it is not
multithread safe.

Submitted by:	rwatson (initial version)
Reviewed by:	rwatson
MFC after:	2 weeks
2009-06-15 20:38:55 +00:00
Andrew Thompson
11c63ede84 Delete the old USB stack. The new stack has settled in and has all the
drivers/functionality and then some.
2009-05-27 16:16:56 +00:00
Rick Macklem
46bd01cb33 Modify src/etc/mtree/BSD.include.dist and src/include/Makefile
so that the .h files in src/sys/fs/nfs will be installed under
/usr/include/fs/nfs. This will allow the following utilities to
build, once additions and changes for the experimental nfs subsystem
are committed:
usr.sbin/mountd - Once modified to add support for the
  experimental nfs subsystem.
ur.sbin/nfsstat - Once modified to add support for the
  experimental nfs subsystem.
usr.sbin/nfscbd - The client side callback daemon for NFSv4.
usr.sbin/nfsuserd - The NFSv4 user/group name<->uid/gid mapping daemon.
usr.sbin/nfsdumpstate - The NFSv4 utility for dumping open/lock state.
usr.sbin/nfsrevoke - The sysadmin command for revoking NFSv4 state.

Approved by:	kib (mentor)
2009-05-21 16:27:47 +00:00
David Schultz
1068c8150a Revert r190943, since the problem in ports seems to be fixed now.
It's amazing how a well-placed eyesore generates more motivation in a
day than email generates in three weeks.
2009-04-17 14:19:18 +00:00
David Schultz
84997ef7b0 GNU Pth has some fragile kludges that were broken by r189828.
I've discussed this with the Pth maintainer and no clear solution
has emerged on the ports side of things, so for now, hack around
the issue in signal.h.
2009-04-11 16:57:50 +00:00
Konstantin Belousov
2b0b4ee359 Implement support for RTLD_NODELETE flag for dlopen() and -z nodelete
static linker option. Do it by incrementing reference count on the loaded
object and its dependencies.

Reviewed by:	davidxu, kan
2009-03-30 08:47:28 +00:00
Xin LI
9fc74a871c Minor changes from Berkeley DB 1.86 and further improvements from OpenBSD.
This does not include the new hash routines since they will cause problems
when reading old hash files.

Since mpool(3) has been changed, provide a compatibility shim for older
binaries.

Obtained from:	OpenBSD
2009-03-28 07:31:02 +00:00
David Schultz
bccfb078c4 Make programs that define a macro called `dprintf' more likely to work. 2009-03-25 08:07:52 +00:00
David Schultz
48a3f7d9ae Fix the visibility of several prototypes. Also move pthread_kill() and
pthread_sigmask() to signal.h. In principle, this shouldn't break anything,
since they're already in signal.h on other systems, and the FreeBSD
manpage says that both pthread.h and signal.h need to be included to
get these functions.

Add a hack to declare pthread_t in the P1003.1-2008 namespace
in signal.h.
2009-03-14 20:10:14 +00:00
David Schultz
ea3186bda4 Hide dbopen() in the POSIX namespace, and use standard type names
throughout so that this compiles in strict POSIX mode.
2009-03-14 20:05:27 +00:00
David Schultz
1a4cc57833 Hide numerous BSD extensions in the POSIX namespace. 2009-03-14 20:04:28 +00:00
David Schultz
b38a55d49d Namespace: abort2() is a BSD extension. 2009-03-14 19:13:30 +00:00
David Schultz
32f1a59174 Namespace: endpwent, getpwent, and setpwent are XSI extensions. 2009-03-14 19:13:01 +00:00
David Schultz
44bf9512a8 Namespace: dprintf() and getline() are in P1003.1-2008. 2009-03-14 19:12:11 +00:00
David Schultz
cc4603df21 Various namespace cleanups, including exposing fchmod() and fchmodat()
in the POSIX namespace, and hiding eaccess() and setproctitle().
Also move mknodat() from unistd.h to sys/stat.h where it belongs.
The *at() syscalls are only in CURRENT, so this shouldn't cause
problems.
2009-03-14 19:11:08 +00:00
David Schultz
6fb888fc07 Namespace: setgrent() is an XSI extension. 2009-03-14 19:05:18 +00:00
David Schultz
c6bd0d5621 Don't prototype _tolower() and _toupper(). They're not supposed to be
functions, and there's no implementation of them in any case.
2009-03-14 19:04:24 +00:00
David Schultz
dd5185d15f Namespace: memccpy() and memchr() are XSI, and memrchr() is a BSD extension. 2009-03-14 19:03:34 +00:00
David Schultz
0338164915 Namespace: dbm_forder() and dbm_dirfno() are BSD extensions. 2009-03-14 19:02:28 +00:00
David Schultz
41f6e3e11c Namespace: _setjmp() and _longjmp() are XSI extensions. 2009-03-14 19:01:26 +00:00