src-test2/lib/libc/gen/opendir.c, branch releng/4.8

MFC rev 1.15 -- avoid listing dir entries twice for the MNT_UNION case

2001-06-04T20:59:48Z

Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),

2000-01-27T23:07:25Z

just use _foo() <-- foo(). In the case of a libpthread that doesn't do call conversion (such as linuxthreads and our upcoming libpthread), this is adequate. In the case of libc_r, we still need three names, which are now _thread_sys_foo() <-- _foo() <-- foo(). Convert all internal libc usage of: aio_suspend(), close(), fsync(), msync(), nanosleep(), open(), fcntl(), read(), and write() to _foo() instead of foo(). Remove all internal libc usage of: creat(), pause(), sleep(), system(), tcdrain(), wait(), and waitpid(). Make thread cancellation fully POSIX-compliant. Suggested by: deischen

Add three-tier symbol naming in support of POSIX thread cancellation

2000-01-12T09:23:48Z

points. For library functions, the pattern is __sleep() <-- _libc_sleep() <-- sleep(). The arrows represent weak aliases. For system calls, the pattern is _read() <-- _libc_read() <-- read().

Replace memory leaking instances of realloc with non-leaking reallocf.

1998-09-16T04:17:47Z

In some cases replace if (a == null) a = malloc(x); else a = realloc(a, x); with simple reallocf(a, x). Per ANSI-C, this is guaranteed to be the same thing. I've been running these on my system here w/o ill effects for some time. However, the CTM-express is at part 6 of 34 for the CAM changes, so I've not been able to do a build world with the CAM in the tree with these changes. Shouldn't impact anything, but...

Cast pointer to a long instead of an int to keep a 64-bit compiler

1998-03-09T04:29:00Z

happy. The code works either way, but I like a clean compile.

Fixed errors in the Lite2 merge. Some style changes were mismerged.

1997-03-12T12:35:44Z

My changes to preserve errno across free() and close() and to report fstat() errors properly were blown away. Updated the FreeBSD changes to match the Lite2 style fixes.

Merge from Lite2:

1997-03-11T11:52:33Z

filesystem include updates, duplicate group suppression, cleanups, filesystem whiteout support (unionfs), bidir popen().

Cache the result of getpagesize() so we only make one syscall.

1996-05-02T08:43:05Z

Use getpagesize instead of CLBYTES.

stat() before open() because opening of special files may be harmful.

1996-03-29T12:55:54Z

Fix bugs in opendir():

1995-04-21T15:23:27Z

- it succeeded on non-directories (see POSIX 5.1.2.4). - it hung on (non-open) named pipes. - it leaked memory if the second malloc() failed. - it didn't preserve errno across errors in close().