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(REENTRANT_NAME): Mangle start and start_fct pointers.

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This commit is contained in:
Ulrich Drepper 2007-10-15 23:02:24 +00:00
parent e807818b5d
commit 58058fa2e6
1 changed files with 24 additions and 8 deletions
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32
nss/getXXbyYY_r.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1996-2002, 2003, 2004, 2006 Free Software Foundation, Inc.
/* Copyright (C) 1996-2004, 2006, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@ -22,6 +22,7 @@
#include <errno.h>
#include <stdbool.h>
#include "nsswitch.h"
#include "sysdep.h"
#ifdef USE_NSCD
# include <nscd/nscd_proto.h>
#endif
@ -120,6 +121,7 @@ int
INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer,
size_t buflen, LOOKUP_TYPE **result H_ERRNO_PARM)
{
static bool startp_initialized;
static service_user *startp;
static lookup_function start_fct;
service_user *nip;
@ -167,11 +169,15 @@ INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer,
}
#endif
if (startp == NULL)
if (! startp_initialized)
{
no_more = DB_LOOKUP_FCT (&nip, REENTRANT_NAME_STRING, &fct.ptr);
if (no_more)
startp = (service_user *) -1l;
{
void *tmp_ptr = (service_user *) -1l;
PTR_MANGLE (tmp_ptr);
startp = tmp_ptr;
}
else
{
#ifdef NEED__RES
@ -189,16 +195,26 @@ INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer,
_res_hconf_init ();
#endif /* need _res_hconf */
start_fct = fct.l;
/* Make sure start_fct is written before startp. */
atomic_write_barrier ();
startp = nip;
void *tmp_ptr = fct.l;
PTR_MANGLE (tmp_ptr);
start_fct = tmp_ptr;
tmp_ptr = nip;
PTR_MANGLE (tmp_ptr);
startp = tmp_ptr;
}
/* Make sure start_fct and startp are written before
startp_initialized. */
atomic_write_barrier ();
startp_initialized = true;
}
else
{
fct.l = start_fct;
no_more = (nip = startp) == (service_user *) -1l;
PTR_DEMANGLE (fct.l);
nip = startp;
PTR_DEMANGLE (nip);
no_more = nip == (service_user *) -1l;
}
while (no_more == 0)