- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Hide DIR definition by making it an opaque struct typedef.

Introduce dirfd() libc exported symbol replacing macro with same name,
preserve _dirfd() macro for internal use.

Replace dirp->dd_fd with dirfd() call. Avoid using dirfd as variable
name to prevent shadowing global symbol.

Sponsored by: Google Summer Of Code 2011

Do not read away the target directory entry when encountering deleted
files after a seekdir().

The seekdir shall set the position for the next readdir operation.
When the _readdir_unlocked() encounters deleted entry, dd_loc is
already advanced. Continuing the loop leads to premature read of
the target entry.

Submitted by: Marc Balmer <mbalmer at openbsd org>
Obtained from: OpenBSD
MFC after: 2 weeks

Since jb@ fixed the type of dd_lock in <dirent.h>, these casts are no
longer required.

Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.

Include a couple of headers to ensure consistency between the prototype and
the function definition.

use _GENERIC_DIRSIZ(dp) to avoid copying too much of the dirent over
the user supplied buffer. this can be a problem when the user doesn't
supply a full dirent and we corrupt their memory.

Fix SCM ID's.

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

#endif should not have a non-comment token after it.
GCC 2.97 (snapshot) complains about this.

Cleanup XXXdir functions to eliminate global hash table of
telldir positions. This will allow (future) locking on a
per-DIR basis (for MT-safety). For now, this change does
the following:

o Remove the hash table from telldir.c. Recode to use queue
macros.

o Remove 'const' from 'telldir(const DIR *)'.

o Remove 'register' variables as suggested in a recent
thread.

No response from: -current

#include <string.h> for memcpy() prototype

Obtained from: OpenBSD

style fixes, remove extra braces.

readdir_r is not POSIX according to POSIX_SOURCE, bruce says:
> readdir_r() is in the _POSIX_SOURCE section, but is not a POSIX.1-1990
> function. It's POSIX.1-1996 so it should be under a different feature
> test which we don't support yet.

make sure errno is saved so that its contents are cleared unless
necessary.

Submitted by: bde

Provide a man page for Alfreds lovely readdir_r function. Also
fixed a minor indentation nit and added a few {}s to make readdir_r
easier on old eyes.

add pthread_cancel, obtained from OpenBSD.

eischen (Daniel Eischen) added wrappers to protect against cancled
threads orphaning internal resources.

the cancelability code is still a bit fuzzy but works for test
programs of my own, OpenBSD's and some examples from ORA's books.

add readdir_r to both libc and libc_r

add some 'const' attributes to function parameters

Reviewed by: eischen, jasone

Fix a bogus cast for a bogus pointer check. This only checks if the
pointer is 4-byte aligned. On a 64-bit machine it probably should
check that the pointer is 8-byte aligned (eh, Bruce?) 8-)

This commit was generated by cvs2svn to compensate for changes in r23658,
which included commits to RCS files with non-trunk default branches.

Import CSRG 4.4BSD-Lite2 lib/libc onto vendor branch

BSD 4.4 Lite Lib Sources