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