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62af25d44e
This is based on https://bugzilla.samba.org/attachment.cgi?id=18081 written by Krzysztof Piotr Oledzki <ole@ans.pl> BUG: https://bugzilla.samba.org/show_bug.cgi?id=15464 Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
#include "replace.h"
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#include "system/wait.h"
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#include "system/threads.h"
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#include <assert.h>
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int main(int argc, const char *argv[])
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{
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pid_t pid;
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int wstatus;
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pthread_key_t k1;
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pthread_key_t k2;
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pthread_key_t k3;
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char *val = NULL;
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const char *nss_winbind = (argc >= 2 ? argv[1] : "bin/plugins/libnss_winbind.so.2");
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void *nss_winbind_handle = NULL;
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union {
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int (*fn)(void);
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void *symbol;
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} nss_winbind_endpwent = { .symbol = NULL, };
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/*
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* load and invoke something simple like
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* _nss_winbind_endpwent in order to
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* get the libnss_winbind internal going
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*/
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nss_winbind_handle = dlopen(nss_winbind, RTLD_NOW);
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printf("%d: nss_winbind[%s] nss_winbind_handle[%p]\n",
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getpid(), nss_winbind, nss_winbind_handle);
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assert(nss_winbind_handle != NULL);
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nss_winbind_endpwent.symbol = dlsym(nss_winbind_handle,
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"_nss_winbind_endpwent");
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printf("%d: nss_winbind_handle[%p] _nss_winbind_endpwent[%p]\n",
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getpid(), nss_winbind_handle, nss_winbind_endpwent.symbol);
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assert(nss_winbind_endpwent.symbol != NULL);
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(void)nss_winbind_endpwent.fn();
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val = malloc(1);
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assert(val != NULL);
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pthread_key_create(&k1, NULL);
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pthread_setspecific(k1, val);
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printf("%d: k1=%d\n", getpid(), k1);
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pid = fork();
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if (pid) {
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free(val);
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wait(&wstatus);
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return WEXITSTATUS(wstatus);
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}
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pthread_key_create(&k2, NULL);
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pthread_setspecific(k2, val);
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printf("%d: Hello after fork, k1=%d, k2=%d\n", getpid(), k1, k2);
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pid = fork();
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if (pid) {
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free(val);
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wait(&wstatus);
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return WEXITSTATUS(wstatus);
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}
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pthread_key_create(&k3, NULL);
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pthread_setspecific(k3, val);
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printf("%d: Hello after fork2, k1=%d, k2=%d, k3=%d\n", getpid(), k1, k2, k3);
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if (k1 == k2 || k2 == k3) {
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printf("%d: FAIL inconsistent keys\n", getpid());
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return 1;
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}
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printf("%d: OK consistent keys\n", getpid());
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return 0;
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}
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