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Reinitialize _create_xid state after fork.

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Programs forking and using RPC in the forks would use the same XIDs.
This commit is contained in:
Ulrich Drepper 2009-11-22 11:43:57 -08:00
parent eb4157390c
commit c5a8b997e2
2 changed files with 9 additions and 5 deletions
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2
ChangeLog
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@ -1,5 +1,7 @@
2009-11-22 Ulrich Drepper <drepper@redhat.com>
* sunrpc/create_xid.c (_create_xid): Reinitialize state after fork.
* sysdeps/unix/sysv/linux/ntp_gettimex.c: New file.
* sysdeps/unix/sysv/linux/Makefile: Add rules to build ntp_gettimex.
* sysdeps/unix/sysv/linux/Versions: Export ntp_gettimex for GLIBC_2.12.

12
sunrpc/create_xid.c
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@ -1,4 +1,4 @@
/* Copyright (c) 1998, 2000 Free Software Foundation, Inc.
/* Copyright (c) 1998, 2000, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
@ -27,7 +27,7 @@
__libc_lock_define_initialized (static, createxid_lock)
static int is_initialized;
static pid_t is_initialized;
static struct drand48_data __rpc_lrand48_data;
unsigned long
@ -37,13 +37,15 @@ _create_xid (void)
__libc_lock_lock (createxid_lock);
if (!is_initialized)
pid_t pid = getpid ();
if (is_initialized != pid)
{
struct timeval now;
__gettimeofday (&now, (struct timezone *) 0);
__srand48_r (now.tv_sec ^ now.tv_usec, &__rpc_lrand48_data);
is_initialized = 1;
__srand48_r (now.tv_sec ^ now.tv_usec ^ pid,
&__rpc_lrand48_data);
is_initialized = pid;
}
lrand48_r (&__rpc_lrand48_data, &res);