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/****************************************************************
* *
* Copyright 2008 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gtm_pwd.h"
#undef getpwuid /* since we are going to use the system level "getpwuid" function, undef the alias to "gtm_getpwuid" */
#include <signal.h>
GBLREF boolean_t blocksig_initialized;
GBLREF sigset_t block_sigsent;
/* This is a wrapper for the system "getpwuid" and is needed to prevent signal interrupts from occurring in the middle
* of getpwuid since that is not signal-safe (i.e. could hold system library related locks that might prevent a signal
* handler from running other system library calls which use the same lock).
*/
struct passwd *gtm_getpwuid(uid_t uid)
{
struct passwd *retval;
sigset_t savemask;
assert(blocksig_initialized); /* the set of blocking signals should be initialized at process startup */
if (blocksig_initialized) /* In pro, dont take chances and handle case where it is not initialized */
sigprocmask(SIG_BLOCK, &block_sigsent, &savemask);
retval = getpwuid(uid);
if (blocksig_initialized)
sigprocmask(SIG_SETMASK, &savemask, NULL);
return retval;
}
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