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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fix tabs lost apparently in copy&paste

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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realpath() should break on looped symlinks.

PR: 3911
Reviewed by: phk
Submitted by: Shigio Yamaguchi <shigio@wafu.netgate.net>

Part 2 of a failed commit (cvs broke). Original message:
Back out a dubious Lite2 change to "optimise" getcwd() to look at $PWD
because it's potentially dangerous (think: symlink races). Move
realp

Part 2 of a failed commit (cvs broke). Original message:
Back out a dubious Lite2 change to "optimise" getcwd() to look at $PWD
because it's potentially dangerous (think: symlink races). Move
realpath() back to it's original location, and remove getcwd_physical()
by renaming it back to getcwd() and zapping the original getcwd wrapper.

Noticed by: bde

The following commits already happened but the log message got lost:

Modified Files:
gen/Makefile.inc gen/getcwd.c stdlib/Makefile.inc
Removed Files:
gen/realpath.3

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Don't attempt to lstat() the POSIXLY invalid empty pathname.

realpath() still accepts "" as an arg and converts it to a canonical
pathname for the current directory.

BSD 4.4 Lite Lib Sources