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 Remo

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

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Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),
just use _foo() <-- foo(). In the case of a libpthread that doesn't do
call conversion (such as linuxthreads and our upcomin

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

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Add three-tier symbol naming in support of POSIX thread cancellation
points. For library functions, the pattern is __sleep() <--
_libc_sleep() <-- sleep(). The arrows represent weak aliases. For
s

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

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

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

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Cast pointer to a long instead of an int to keep a 64-bit compiler
happy. The code works either way, but I like a clean compile.

Fixed errors in the Lite2 merge. Some style changes were mismerged.
My changes to preserve errno across free() and close() and to report
fstat() errors properly were blown away.

Updated the FreeBSD

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

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Merge from Lite2:
filesystem include updates, duplicate group suppression, cleanups,
filesystem whiteout support (unionfs), bidir popen().

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

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

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

Fix bugs in opendir():
- 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

Fix bugs in opendir():
- 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().

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BSD 4.4 Lite Lib Sources