Commit Graph

12850 Commits

Author SHA1 Message Date
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
David Xu
41e160536a Return SEM_FAILED instead of NULL, though there are same, but the
SEM_FAILED is more suitable name.
In function, sem_close(), always set errno on error.
2010-01-13 08:53:23 +00:00
Christian Brueffer
a47698f8d6 Miscellaneous mdoc, spelling and inconsistency fixes.
PR:		142573, 142576 (mostly)
Submitted by:	brucec
MFC after:	1 week
2010-01-12 21:45:03 +00:00
Christian Brueffer
0ae739d6b2 Remove useless .TE groff macro.
Submitted by:	Joerg Sonnenberger
MFC after:	3 days
2010-01-12 17:38:23 +00:00
Joseph Koshy
bc315bbd5a Bug fix: add a missing initializer.
Submitted by:	Luca Pizzamiglio <luca.pizzamiglio at gmail dot com>
PR:		i386/142742
2010-01-12 17:03:55 +00:00
David Xu
7bf27b2dde Update manuals of sem_open and sem_init.
Submitted by:	ru
2010-01-12 01:30:05 +00:00
Andrew Thompson
c740e8e4b2 Reset variable fields in case the transfer is opened again
Submitted by:	Hans Petter Selasky
2010-01-10 19:18:49 +00:00
Colin Percival
c6a96a8441 Give a less silly response to a silly request.
Prior to this commit, fread/fwrite calls with size * nmemb > SIZE_MAX
were handled by reading or writing (size_t)(size * nmemb) bytes; for
example, on 32-bit platforms, fread(ptr, 641, 6700417, f) would read 1
byte and indicate that the requested 6700417 blocks had been read.

This commit adds a check for such integer overflows, and treats them as
if an overly large request was passed to read/write; i.e., it sets errno
to EINVAL, sets the error indicator on the file, and returns a short
object count (0, to be specific).

The overflow check involves an integer division, so as a performance
optimization we check first to see if both size and nmemb are less than
2^16; if they are, no overflow is possible and we avoid the division.
We assume here that size_t is at least 32 bits; this appears to be true
on all platforms FreeBSD supports.

Although this commit fixes an integer overflow, it is not likely to have
any security implications, since any program which would be affected by
this bug fix is quite clearly already very confused.

Reviewed by:	kib
MFC after:	1 month
2010-01-10 14:30:30 +00:00
Brooks Davis
9d8e1a8300 Use the correct types to store uids and gids in the credential cache. 2010-01-09 23:36:51 +00:00
Marcel Moolenaar
f8fd9e4820 Implement the fo_readdir method. This does not support long
file names.

Obtained from:	Juniper Networks, Inc.
MFC after:	1 week
2010-01-09 22:33:34 +00:00
Xin LI
777f8cebf3 Add a set of manual pages for pthread[_attr]_[sg]etaffinity(3).
Reviewed by:	davidxu
MFC after:	2 weeks
2010-01-09 12:31:11 +00:00
David Xu
a455039e3a Update manual for sem_init and sem_open, restrictions of shared semaphore
and 14 characters in name length no longer exist.

Reviewed by:	deischen@
2010-01-09 05:40:46 +00:00
Warner Losh
b543d9ad75 Merge r195129 from project/mips to head by hand:
r195129 | gonzo | 2009-06-27 17:28:56 -0600 (Sat, 27 Jun 2009) | 2 lines
- Use sysarch(2) in MIPS version of _tcb_set/_tcb_get
2010-01-09 00:07:47 +00:00
Warner Losh
52e0ea7a0d Merge r195030 from project/mips to head by hand
r195030 | gonzo | 2009-06-25 19:27:31 -0600 (Thu, 25 Jun 2009) | 4 lines
- Switch to libc softfloat from libgcc implementation. The problem
    with latter is that it is not complete, fpsetXXX/fpgetXXX
    functions are missing.
2010-01-09 00:01:35 +00:00
Warner Losh
87e925fb53 Merge r197800 from projects/mips to head by hand:
r197800 | gonzo | 2009-10-06 00:35:52 -0600 (Tue, 06 Oct 2009) | 3 lines
- curbrk variable for sbrk and brk should be the same
- Add correct variable names to Symbol.map
2010-01-08 23:59:04 +00:00
Warner Losh
9cd8780a69 Merge r195025 from projects/mips to head by hand:
r195025 | gonzo | 2009-06-25 19:01:50 -0600 (Thu, 25 Jun 2009) | 4 lines
- Move fpgetXXX.c/fpsetXXX.c sources to hardfloat subdir/
    to prevenmt them from being mixed up with lib/libc/softfloat
    files with the same names
2010-01-08 23:50:39 +00:00
Christian Brueffer
37dc3d28cb Remove unnecessary quoting and markup, add missing punctuation.
PR:		140494
Submitted by:	Jeremy Huddleston <jeremyhu@apple.com>, bde
MFC after:	1 week
2010-01-08 22:02:42 +00:00
Konstantin Belousov
4319da1319 Further fix grammar.
Suggested by:	alc
MFC after:	3 days
2010-01-07 21:14:46 +00:00
Christian Brueffer
44640a5251 Fix a typo and bump date for the previous commit. 2010-01-07 21:08:22 +00:00
Edward Tomasz Napierala
10302b1ade Remove BUGS section that no longer applies after recent changes to semaphore
code.

OK-ed by:	davidxu
2010-01-07 16:52:00 +00:00
Konstantin Belousov
0b56296772 Give some information on SF_MNOWAIT flag.
MFC after:	3 days
2010-01-07 13:31:00 +00:00
David Xu
323d80a0a7 Don't forget to use fourth argument if O_CREAT is set in argument oflag.
The fourth specifies initial value for the semaphore.
2010-01-07 04:15:49 +00:00
John Baldwin
8feb1ea45e Use _pthread_once() rather than _once() for localtime() and gmtime(). These
methods are only invoked when __isthreaded is true at which point it is safe
to use _pthread_once() directly.

MFC after:	1 week
2010-01-06 20:43:40 +00:00
Konstantin Belousov
f5636f881b Do not rely on behaviour undefined by ANSI C, use thunks to adapt
alphasort-like interface to the comparision function required by
qsort() and qsort_r().

For opendir() thunk and alphasort(), comment on why we deviated from
POSIX by using strcmp() instead of strcoll().

Requested and reviewed by:	bde
MFC after:	2 weeks
2010-01-05 20:20:31 +00:00
Christian Brueffer
7b331f63c5 Fix a double free().
PR:		142339
Submitted by:	Henning Petersen <henning.petersen@t-online.de>
MFC after:	2 weeks
2010-01-05 20:18:41 +00:00
David Xu
60e9cdf158 remove file thr_sem_new.c. 2010-01-05 07:50:31 +00:00
David Xu
523a738f77 More cleanup, remove _libc prefix because libthr no longer has stubs
referencing them.
2010-01-05 06:40:27 +00:00
David Xu
791f7a99e2 Remove extra new semaphore stubs, because libc already has them, and
ld can find the newest version which is default.

Poked by: kan@
2010-01-05 06:21:29 +00:00
David Xu
3e18aa9869 forgot to remove SYM_FBP10. ;-) 2010-01-05 05:47:18 +00:00
David Xu
79aaab046d Remove unused macros. 2010-01-05 05:44:52 +00:00
David Xu
d802aa25d2 Don't check has_waiters twice, inline some small functions.
performance result on my machine:
	mutex     Elapsed: 902115 us; per iteration: 90 ns.
	semaphore Elapsed: 958780 us; per iteration: 95 ns.
2010-01-05 03:39:31 +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
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
Ed Schouten
442aea92f6 Don't forget to clean up the file copied from the kernel sources.
MFC after:	1 week
2010-01-02 20:27:14 +00:00
Ed Schouten
daaf575910 Build lib/ with WARNS=6 by default.
Similar to libexec/, do the same with lib/. Make WARNS=6 the norm and
lower it when needed.

I'm setting WARNS?=0 for secure/. It seems secure/ includes the
Makefile.inc provided by lib/. I'm not going to touch that directory.
Most of the code there is contributed anyway.
2010-01-02 09:58:07 +00:00
Brooks Davis
a6fffd6cb0 The devices that supported EVFILT_NETDEV kqueue filters were removed in
r195175.  Remove all definitions, documentation, and usage.

fifo_misc.c:
	Remove all kqueue tests as fifo_io.c performs all those that
	would have remained.

Reviewed by:	rwatson
MFC after:	3 weeks
X-MFC note:	don't change vlan_link_state() function signature
2009-12-31 20:29:58 +00:00
Ed Schouten
26fac73c1c Remove an unused variable. 2009-12-31 01:38:12 +00:00
Ed Schouten
e17aa6ff32 Add missing `void' keyword. 2009-12-31 01:37:26 +00:00
John Baldwin
bac2c9636c Use _once() to initialize the pthread key for thread-local storage to hold
the results of gmtime() instead of using a pthread mutex directly.

MFC after:	1 week
2009-12-30 19:06:16 +00:00
Tim Kientzle
e02dd0d514 Remove some test files that are no longer used. 2009-12-30 06:37:58 +00:00
Tim Kientzle
8c78c2959a Reserve constants for RPM unwrapper and XAR reader. 2009-12-30 06:28:30 +00:00
Tim Kientzle
b54f125538 Libarchive in FreeBSD is now synced up with 2.7.901a from
libarchive.googlecode.com
2009-12-30 06:25:19 +00:00
Tim Kientzle
8088bef24c UU decoder. Now that libarchive can recursively taste input streams,
you can do things like this:  tar xvf archive.tar.gz.uu
2009-12-30 06:12:03 +00:00
Tim Kientzle
0a1d787383 A raft of test changes and improvements from the Googlecode repository.
In particular, this includes tests for the new features I've merged
over the last few days.
2009-12-30 05:59:21 +00:00
Tim Kientzle
f124826e0d Merge Michihiro NAKAJIMA's significant work on the ISO9660 reader
from googlecode:
 * Support for zisofs compressed entries
 * Support for relocated deep directories
 * Direct calculation of link counts for accurate nlink values
   even on images that lack Rockridge extensions
 * Faster handling of the internal file lists.
 * Better detection of ISO variants
2009-12-30 05:30:35 +00:00
Konstantin Belousov
d439b6c223 Document _FAST and _PRECISE clocks.
Submitted by:	Valentin Nechayev <netch segfault kiev ua>
MFC after:	3 days
2009-12-29 15:58:10 +00:00
Konstantin Belousov
5d2874abdd Document CLOCK_SECOND, add cross-reference from time(3) to clock_gettime(2).
Based on submission by:	pluknet gmail com
MFC after:	3 days
2009-12-29 14:29:08 +00:00
Konstantin Belousov
358ed16f75 Use clock_gettime(CLOCK_SECOND) instead of gettimeofday(2) for
implementation of time(3). CLOCK_SECOND is much faster.

No objections from:	phk
Submitted by:	Valentin Nechayev <netch segfault kiev ua>
MFC after:	1 week
2009-12-29 12:47:47 +00:00
Tim Kientzle
24b76fe47f Rationalize the support for cryptographic hashes. 2009-12-29 06:39:07 +00:00
Tim Kientzle
87a571f88a Essentially eliminate problems with false hardlinks in POSIX cpio
archives by generating synthetic ino values and mapping values
from disk into the new values.
2009-12-29 06:34:23 +00:00