Commit Graph

25 Commits

Author SHA1 Message Date
Ed Schouten
26d4f5e969 Add two new routines: fdevname() and fdevname_r().
A more elegant way of obtaining a name of a character device by its file
descriptor on FreeBSD, is to use the FIODGNAME ioctl. Because a valid
file descriptor implies a file descriptor is visible in /dev, it will
always resolve a valid device name.

I'm adding a more friendly wrapper for this ioctl, called fdevname(). It
is a lot easier to use than devname() and also has better error
handling. When a device name cannot be resolved, it will just return
NULL instead of a generated device name that makes no sense.

Discussed with:	kib
2009-02-11 20:24:59 +00:00
Warner Losh
c879ae3536 Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.
2007-01-09 00:28:16 +00:00
Hajimu UMEMOTO
77cf61aeb0 reduce strlen() call. 2005-05-20 15:39:20 +00:00
Hajimu UMEMOTO
8a4d3d8400 use reentrant.h and simplify. 2005-05-20 15:17:08 +00:00
Hajimu UMEMOTO
532e65b886 check return value of ttyname_r(). 2005-05-20 14:59:20 +00:00
Hajimu UMEMOTO
db297254fe ttyname_r() didn't pass correct buffer size to devname_r(). 2005-05-20 14:56:55 +00:00
Xin LI
68b749ff2f Revert to old ttyname_r behavior that when _ioctl() returns 0 (SUCCEEDED),
return the buffer immediately.  This will permit ssh and/or PAM logins
broken by previous commit.

The (potential) underlying problem is still under investigation.

Point hat to:	me
2005-05-14 14:03:21 +00:00
Xin LI
8dcb56dc78 Provide more POSIX-complaint ttyname_r(3) interface[1], which is slightly
different from what has been offered in libc_r (the one spotted in the
original PR which is found in libthr has already been removed by David's
commit, which is rev. 1.44 of lib/libthr/thread/thr_private.h):
	- Use POSIX standard prototype for ttyname_r, which is,
		int ttyname_r(int, char *, size_t);
	  Instead of:
	  	char *ttyname_r(int, char *, size_t);
	  This is to conform IEEE Std 1003.1, 2004 Edition [1].
	- Since we need to use standard errno for return code, include
	  errno.h in ttyname.c
	- Update ttyname(3) implementation according to reflect the API
	  change.
	- Document new ttyname_r(3) behavior
	- Since we already make use of a thread local storage for
	  ttyname(3), remove the BUGS section.
	- Remove conflicting ttyname_r related declarations found in libc_r.

Hopefully this change should not have changed the API/ABI, as the ttyname_r
symbol was never introduced before the last unistd.h change which happens a
couple of days before.

[1] http://www.opengroup.org/onlinepubs/009695399/functions/ttyname.html

Requested by:	Tom McLaughlin <tmclaugh sdf lonestar org>
Through PR:	threads/76938
Patched by:	Craig Rodrigues <rodrigc crodrigues org> (with minor changes)
Prompted by:	mezz@
2005-05-13 16:27:30 +00:00
Poul-Henning Kamp
9a9ef8b65a Have ttyname_r() try to ask DEVFS for the device name.
Document ttyname_r().

Simplify threaded/unthreaded stuff a lot.
2005-03-08 21:35:52 +00:00
Jacques Vidrine
84d9142f58 Remove unused variables and function declarations. Add missing headers. 2004-01-06 18:26:15 +00:00
Andrey A. Chernov
ba10c47105 Don't statically initialize buf to _PATH_DEV, _PATH_DEV always copied to
it in any case.
2003-06-24 22:20:06 +00:00
Poul-Henning Kamp
97679e71b0 ttyname(3) must return absolute pathnames.
Noticed by:	kris
2003-06-21 08:16:12 +00:00
Poul-Henning Kamp
e7acddfdef Use devname(3) to do the task.
Reviewed by:	imp
2003-06-20 22:45:53 +00:00
David E. O'Brien
b231cb3945 * Remove __P and convert to ANSI prototypes.
* Remove 'register'.  (some functions had 7+ register functions...)
* Fix SCM ID's.
2002-02-01 01:32:19 +00:00
Daniel Eischen
d201fe46e3 Remove _THREAD_SAFE and make libc thread-safe by default by
adding (weak definitions to) stubs for some of the pthread
functions.  If the threads library is linked in, the real
pthread functions will pulled in.

Use the following convention for system calls wrapped by the
threads library:
	__sys_foo - actual system call
	_foo - weak definition to __sys_foo
	foo - weak definition to __sys_foo

Change all libc uses of system calls wrapped by the threads
library from foo to _foo.  In order to define the prototypes
for _foo(), we introduce namespace.h and un-namespace.h
(suggested by bde).  All files that need to reference these
system calls, should include namespace.h before any standard
includes, then include un-namespace.h after the standard
includes and before any local includes.  <db.h> is an exception
and shouldn't be included in between namespace.h and
un-namespace.h  namespace.h will define foo to _foo, and
un-namespace.h will undefine foo.

Try to eliminate some of the recursive calls to MT-safe
functions in libc/stdio in preparation for adding a mutex
to FILE.  We have recursive mutexes, but would like to avoid
using them if possible.

Remove uneeded includes of <errno.h> from a few files.

Add $FreeBSD$ to a few files in order to pass commitprep.

Approved by:	-arch
2001-01-24 13:01:12 +00:00
John Birrell
86af3ff9b0 Implement compile time debug mode for thread locks. 1998-06-09 08:32:23 +00:00
John Birrell
5a2f1fed77 Change in name of the static initializer define. 1998-04-04 11:03:07 +00:00
Julian Elischer
39a9295edc Submitted by: Jeremy Allison (jallison@whistle.com)
fix a slight confusion about which draft of threads we are supporting.
this allows something as big and ugly as samba to be compiled with libc_r
and still work!  our user-level pthreads seems amazingly robust!
1998-02-18 01:20:33 +00:00
Julian Elischer
c840cec7c5 Submitted by: John Birrell
uthreads update from the author.
1997-02-05 23:26:09 +00:00
Jeffrey Hsu
3384e369af Parameters pthread_getspecific() changed. 1996-11-11 09:11:59 +00:00
Julian Elischer
0f7d684755 Submitted by: John Birrell <cimaxp1!jb@werple.net.au>
Here are the diffs for libc_r to get it one step closer to P1003.1c
These make most of the thread/mutex/condvar structures opaque to the
user. There are three functions which have been renamed with _np
suffixes because they are extensions to P1003.1c (I did them for JAVA,
which needs to suspend/resume threads and also start threads suspended).

I've created a new header (pthread_np.h) for the non-POSIX stuff.

The egrep tags stuff in /usr/src/lib/libc_r/Makefile that I uncommented
doesn't work. I think its best to delete it. I don't think libc_r needs
tags anyway, 'cause most of the source is in libc which does have tags.

also:

Here's the first batch of man pages for the thread functions.
The diff to /usr/src/lib/libc_r/Makefile removes some stuff that was
inherited from /usr/src/lib/libc/Makefile that should only be done with
libc.

also:

I should have sent this diff with the pthread(3) man page.
It allows people to type

make -DWANT_LIBC_R world

to get libc_r built with the rest of the world. I put this in the
pthread(3) man page.  The default is still not to build libc_r.


also:
The diff attached adds a pthread(3) man page to /usr/src/share/man/man3.
The idea is that without libc_r installed, this man page will give people
enough info to know that they have to build libc_r.
1996-08-20 08:22:01 +00:00
Jordan K. Hubbard
51295a4d3e General -Wall warning cleanup, part I.
Submitted-By: Kent Vander Velden <graphix@iastate.edu>
1996-07-12 18:57:58 +00:00
Julian Elischer
f70177e76e Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00
Peter Wemm
fcc3b6999e Make ttyname() use posix-style tcgetattr() to check to see that it's
running on a tty.  (Same as isatty()) The old-style TIOCGETP ioctl
wouldn't fly if the kernel didn't have COMPAT_43.
Submitted by:	Carl Fongheiser <cmf@netins.net>
1995-09-22 17:01:28 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00