ok otto deraadt

ok millert@

and freebsd, apparently written by torek, the man we never see anymore;
submitted by jcs, but he is not around right now for the libc major crank
so i sneak it in for him

From: FreeBSD by Constantin S. Svintsoff <kostik (at) iclub.nsu.ru>
ok otto@ millert@

on error.

using it.  Make uu_lock_txfr work by properly checking return value from
put_pid().  Fix an FD leak on the lockfile in an error path (from FreeBSD
with modifications).  OK millert@, input from otto@ and Bruno Rohee.

termination with '\0') vs. null termination.
Input from krw@, jaredy@, jmc@.  OK deraadt@

setting a flag.  That way when we are called again we can be sure
to realloc() the right thing, regardless of the current value of
environ.  When the stashed value != environ (or when we are called
for the first time), copy the existing entries from environ and set
environ to the new value.  OK deraadt@, beck@, djm@

up with a low number of rounds. Spotted by mpech@; ok mpech@ millert@

of silently truncating.  OK deraadt@ otto@

fixes pr #3998; diff from frank denis, though slightly different fix
committed;
help and ok millert@

Noticed by mepch@.  OK pedro@ and deraadt@

ok krw@ millert@

ok markus@ krw@ cloder@ millert@

ok djm@

From Peter Galbavy.

we match API's against each other, fun eh; millert ok

ok millert jmc pedro

- When malloc_abort==0 (MALLOC_OPTIONS=a), don't abort in wrterror().
fine deraadt@

long values properly so don't bother trying.  This greatly simplifies
the code.  tedu@ OK with input from otto@ and others.

using mmap(2) instead of sbrk(2).
To make a long story short, using mmap(2) in malloc(3) allows us to draw
all the benefits from our mmap(2)'s randomization feature, closing the
effort we did for returning memory blocks from random addresses.
Tested for a long time by many, thanks to them.
Go for it ! deraadt@

ok millert@

one will get implicitly cast to unsigned.  Fixes a bug with negative
minval noticed by mjc@.  Similar to a diff from miod@.  OK miod@.

Today it finally dies.  Based on a diff from Gabriel Kihlman.

To build you must:
cd /usr/src && make obj && make includes
cd lib/libc && make depend && make && NOMAN=1 sudo make install
cd /usr/src && make build

from kjell@

Now passes the regress tests.

ok pedro@, millert@