CVS log for src/lib/libc/gen/readdir.c

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Pull up following revision(s) (requested by riastradh in ticket #1898):

	lib/libc/gen/readdir.c: revision 1.27

readdir(3): Preserve errno on end-of-directory.

PR pkg/57145: gmake: *** INTERNAL: readdir: Operation not supported.
Stop.

Pull up following revision(s) (requested by riastradh in ticket #935):

	lib/libc/gen/readdir.c: revision 1.27

readdir(3): Preserve errno on end-of-directory.

PR pkg/57145: gmake: *** INTERNAL: readdir: Operation not supported.
Stop.

readdir(3): Preserve errno on end-of-directory.

PR pkg/57145: gmake: *** INTERNAL: readdir: Operation not supported.
Stop.

sync with head

Update old-style definitions to ANSI, remove a couple of register
definitions along the way. Fixed gcc 4.1 build (thank you vax)

- remove a wrong _DIAGASSERT
- update comments
- whitespace

sync with head.

Fix a bug in the implementation of seekdir(). If the first entry in
a block has been unlinked, seekdir() may overshoot by one entry.
Thus, _readdir_unlinked() must not skip deleted entries when being
called from seekdir().
Christos agreed.

file readdir.c was added on branch christos-time_t on 2008-05-04 18:53:27 +0000

Fix a bug in the implementation of seekdir(). If the first entry in
a block has been unlinked, seekdir() may overshoot by one entry.
Thus, _readdir_unlinked() must not skip deleted entries when being
called from seekdir().
Christos agreed.

PR/24324: Arne H Juul: Re-implement seekdir/telldir using a pointer of
locations per directory instead of a global hash table to avoid memory
leak issues, and incorrect results.

rename __func to _func_unlocked, and add their prototypes in extern.h
instead of exposing them in dirent.h. More locking consistency fixes.

PR/32609: Tanaka Akira: seekdir blocks if pthread is linked
Do locking consistently to avoid recursive locks (like the bug reported in
this pr), and to avoid leaking locks on errors.

compat core reorg.

64 bit inode changes

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Need <string.h> for memcpy().

add mutex locking for directories and readdir_r(3). Influenced by FreeBSD.

Delint.
Remove trailing ; from uses of __weak_alias().  The macro inserts this if
needed.

back out the #ifdef _DIAGNOSTIC argument checks; too many people complained.
_DIAGASSERT() is still retained.

* use _DIAGASSERT() to check pointer arguments against NULL and file
  descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
  and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

		_DIAGASSERT(path != NULL)
	#ifdef _DIAGNOSTIC
		if (path == NULL) {
			errno = EFAULT;
			return (-1);
		}
	#endif

delint

trivial changes to quiet lint.

remove obsolete register declarations

import lite-2

Fix another getdents() botch. I must've had a Makefile without
warnings on.

Use getdents(). Read NFS directories in one go (just as union dirs, but
without removing double entries). This makes sure that we get a
consistent snapshot of the directory, and protects against any
'bad cookie' errors.

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore.  The library will use those
names internally.  Weak aliases are used to provide the original names
to the API.

This is only the first part of this change.  It is most of the functions
which are implemented in C for all NetBSD ports.  Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

Fix RCSID's

snapshot namespace cleanup

#include "namespace.h"

#include "namespace.h"
Added __weak_reference defns.

clean up Id's on files previously imported...

Mostly sync with CSRG.

beware cast type.

Add RCS Id's

file readdir.c was added on branch netbsd-1-0 on 1994-07-27 14:39:49 +0000

Add RCS Id's

opendir() & friends from 4.4lite.

initial import of 386bsd-0.1 sources

Initial revision