141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
/*
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* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
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* Copyright (c) 2012 Wanlong Gao <gaowanlong@cn.fujitsu.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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/*
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* Test to verify inheritance of environment variables by child.
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*/
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#if defined UCLINUX && !__THROW
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/* workaround for libc bug */
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#define __THROW
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#endif
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#include <errno.h>
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#include <sched.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include "test.h"
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#include "clone_platform.h"
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#define MAX_LINE_LENGTH 256
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static void setup(void);
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static void cleanup(void);
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static int child_environ();
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static int pfd[2];
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char *TCID = "clone06";
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int TST_TOTAL = 1;
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int main(int ac, char **av)
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{
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int lc, status;
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void *child_stack;
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char *parent_env;
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char buff[MAX_LINE_LENGTH];
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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child_stack = malloc(CHILD_STACK_SIZE);
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if (child_stack == NULL)
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tst_brkm(TBROK, cleanup, "Cannot allocate stack for child");
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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if ((pipe(pfd)) == -1)
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tst_brkm(TBROK | TERRNO, cleanup, "pipe() failed");
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TEST(ltp_clone(SIGCHLD, child_environ, NULL, CHILD_STACK_SIZE,
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child_stack));
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if (TEST_RETURN == -1)
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tst_brkm(TFAIL | TTERRNO, cleanup, "clone failed");
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/* close write end from parent */
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if ((close(pfd[1])) == -1)
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tst_resm(TWARN | TERRNO, "close(pfd[1]) failed");
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/* Read env var from read end */
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if ((read(pfd[0], buff, sizeof(buff))) == -1)
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tst_brkm(TBROK | TERRNO, cleanup,
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"read from pipe failed");
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/* Close read end from parent */
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if ((close(pfd[0])) == -1)
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tst_resm(TWARN | TERRNO, "close(pfd[0]) failed");
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parent_env = getenv("TERM") ? : "";
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if ((strcmp(buff, parent_env)) == 0)
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tst_resm(TPASS, "Test Passed");
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else
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tst_resm(TFAIL, "Test Failed");
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if ((wait(&status)) == -1)
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tst_brkm(TBROK | TERRNO, cleanup,
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"wait failed, status: %d", status);
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}
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free(child_stack);
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_sig(FORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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}
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static void cleanup(void)
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{
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}
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/*
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* Function executed by child.
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* Gets the value for environment variable,TERM &
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* writes it to a pipe.
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*/
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static int child_environ(void)
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{
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char var[MAX_LINE_LENGTH];
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/* Close read end from child */
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if ((close(pfd[0])) == -1)
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tst_brkm(TBROK | TERRNO, cleanup, "close(pfd[0]) failed");
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if ((sprintf(var, "%s", getenv("TERM") ? : "")) < 0)
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tst_resm(TWARN | TERRNO, "sprintf() failed");
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if ((write(pfd[1], var, MAX_LINE_LENGTH)) == -1)
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tst_resm(TWARN | TERRNO, "write to pipe failed");
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/* Close write end of pipe from child */
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if ((close(pfd[1])) == -1)
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tst_resm(TWARN | TERRNO, "close(pfd[1]) failed");
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exit(0);
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}
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