404 lines
11 KiB
C
404 lines
11 KiB
C
/*
|
|
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* Further, this software is distributed without any warranty that it is
|
|
* free of the rightful claim of any third person regarding infringement
|
|
* or the like. Any license provided herein, whether implied or
|
|
* otherwise, applies only to this software file. Patent licenses, if
|
|
* any, provided herein do not apply to combinations of this program with
|
|
* other software, or any other product whatsoever.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write the Free Software Foundation, Inc., 59
|
|
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*
|
|
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
|
|
* Mountain View, CA 94043, or:
|
|
*
|
|
* http://www.sgi.com
|
|
*
|
|
* For further information regarding this notice, see:
|
|
*
|
|
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
|
|
*
|
|
*/
|
|
/* $Id$ */
|
|
/**********************************************************
|
|
*
|
|
* OS Test - Silicon Graphics, Inc.
|
|
*
|
|
* TEST IDENTIFIER : fork04
|
|
*
|
|
* TEST TITLE : Child inheritance of Environment Variables after fork()
|
|
*
|
|
* PARENT DOCUMENT : frktds01
|
|
*
|
|
* TEST CASE TOTAL : 3
|
|
*
|
|
* WALL CLOCK TIME : 1
|
|
*
|
|
* CPU TYPES : ALL
|
|
*
|
|
* AUTHOR : Kathy Olmsted
|
|
*
|
|
* CO-PILOT : Steve Shaw
|
|
*
|
|
* DATE STARTED : 06/17/92
|
|
*
|
|
* INITIAL RELEASE : UNICOS 7.0
|
|
*
|
|
* TEST CASES
|
|
* Test these environment variables correctly inherited by child:
|
|
* 1. TERM
|
|
* 2. NoTSetzWq
|
|
* 3. TESTPROG
|
|
*
|
|
* INPUT SPECIFICATIONS
|
|
* The standard options for system call tests are accepted.
|
|
* (See the parse_opts(3) man page).
|
|
*
|
|
* DURATION
|
|
* Terminates - with frequency and infinite modes.
|
|
*
|
|
* SIGNALS
|
|
* Uses SIGUSR1 to pause before test if option set.
|
|
* (See the parse_opts(3) man page).
|
|
*
|
|
* ENVIRONMENTAL NEEDS
|
|
* No run-time environmental needs.
|
|
*
|
|
* DETAILED DESCRIPTION
|
|
*
|
|
* Setup:
|
|
* Setup signal handling.
|
|
* Make and change to a temporary directory.
|
|
* Pause for SIGUSR1 if option specified.
|
|
* Add TESTPROG variable to the environment
|
|
*
|
|
* Test:
|
|
* Loop if the proper options are given.
|
|
* fork()
|
|
* Check return code, if system call failed (return=-1)
|
|
* Log the errno
|
|
* CHILD:
|
|
* open a temp file
|
|
* Determine environment values and write to file
|
|
* close file containing test values.
|
|
* exit.
|
|
* PARENT:
|
|
* Wait for child to exit.
|
|
* Verify exit status
|
|
* Open file containing test values.
|
|
* For each test case:
|
|
* Read the value from the file.
|
|
* Determine and report PASS/FAIL result.
|
|
*
|
|
* Cleanup:
|
|
* Print errno log and/or timing stats if options given
|
|
* Remove the temporary directory and exit.
|
|
*
|
|
*
|
|
*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <sys/param.h>
|
|
#include <signal.h> /*Includes signal information. */
|
|
#include <errno.h>
|
|
#include "test.h"
|
|
#include "usctest.h"
|
|
|
|
const char *TCID="fork04"; /* Test program identifier. */
|
|
extern int Tst_count; /* Test Case counter for tst_* routines */
|
|
|
|
|
|
|
|
#define KIDEXIT 42 /* Known value for child exit status */
|
|
#define MAX_LINE_LENGTH 256
|
|
#define OUTPUT_FILE "env.out"
|
|
#define ENV_NOT_SET "getenv() does not find variable set"
|
|
|
|
/* list of environment variables to test */
|
|
const char *environ_list[] = {"TERM","NoTSetzWq","TESTPROG"};
|
|
#define NUMBER_OF_ENVIRON (int)(sizeof(environ_list)/sizeof(char *))
|
|
int TST_TOTAL=NUMBER_OF_ENVIRON; /* Total number of test cases. */
|
|
|
|
/***************************************************************
|
|
* cleanup() - performs all ONE TIME cleanup for this test at
|
|
* completion or premature exit.
|
|
***************************************************************/
|
|
void
|
|
cleanup()
|
|
{
|
|
/*
|
|
* print timing stats if that option was specified.
|
|
* print errno log if that option was specified.
|
|
*/
|
|
TEST_CLEANUP;
|
|
|
|
/* remove the temporary directory and exit with
|
|
return code appropriate for results */
|
|
tst_rmdir();
|
|
tst_exit();
|
|
|
|
} /* End cleanup() */
|
|
|
|
/***************************************************************
|
|
* setup() - performs all ONE TIME setup for this test.
|
|
***************************************************************/
|
|
void
|
|
setup()
|
|
{
|
|
/* capture signals */
|
|
tst_sig(FORK, DEF_HANDLER, cleanup);
|
|
|
|
/* make and change to a temporary directory */
|
|
tst_tmpdir();
|
|
|
|
/* add a variable to the environment */
|
|
putenv("TESTPROG=FRKTCS04");
|
|
|
|
/* Pause if that option was specified */
|
|
TEST_PAUSE;
|
|
|
|
} /* End setup() */
|
|
|
|
|
|
/***************************************************************
|
|
* child_environment - the child side of the environment tests
|
|
* determine values for the variables and write to a file
|
|
***************************************************************/
|
|
void child_environment()
|
|
{
|
|
|
|
int fildes;
|
|
int index;
|
|
char msg[MAX_LINE_LENGTH];
|
|
char *var;
|
|
|
|
fildes = creat(OUTPUT_FILE,0700);
|
|
|
|
|
|
for (index=0;index<NUMBER_OF_ENVIRON;index++) {
|
|
memset(msg, 0, MAX_LINE_LENGTH);
|
|
|
|
if ( (var=getenv(environ_list[index])) == NULL )
|
|
(void)sprintf(msg,"%s:%s",environ_list[index], ENV_NOT_SET);
|
|
else
|
|
(void)sprintf(msg,"%s:%s",environ_list[index], var);
|
|
|
|
write(fildes,msg,sizeof(msg)); /* includes extra null chars */
|
|
}
|
|
|
|
close(fildes);
|
|
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* Compare parent env string to child's string.
|
|
* Each string is in the format: <env var>:<value>
|
|
*
|
|
***********************************************************************/
|
|
int
|
|
cmp_env_strings(char *pstring, char *cstring)
|
|
{
|
|
char *penv, *cenv, *pvalue, *cvalue;
|
|
|
|
/*
|
|
* Break pstring into env and value
|
|
*/
|
|
penv=pstring;
|
|
if ( (pvalue=strchr(pstring, ':')) == NULL ) {
|
|
tst_resm(TBROK,
|
|
"internal error - parent's env string not in correct format:'%s'",
|
|
pstring);
|
|
return -1;
|
|
} else {
|
|
*pvalue='\0';
|
|
pvalue++;
|
|
if ( *pvalue == '\0' ) {
|
|
tst_resm(TBROK, "internal error - missing parent's env value");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Break cstring into env and value
|
|
*/
|
|
cenv=cstring;
|
|
if ( (cvalue=strchr(cstring, ':')) == NULL ) {
|
|
tst_resm(TBROK,
|
|
"internal error - parent's env string not in correct format:'%s'",
|
|
cstring);
|
|
return -1;
|
|
} else {
|
|
*cvalue='\0';
|
|
cvalue++;
|
|
if ( *cvalue == '\0' ) {
|
|
tst_resm(TBROK, "internal error - missing child's env value");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if ( strcmp(penv, cenv) != 0 ) {
|
|
tst_resm(TBROK, "internal error - parent(%s) != child (%s) env",
|
|
penv, cenv);
|
|
return -1;
|
|
}
|
|
|
|
if ( strcmp(pvalue, cvalue) != 0 ) {
|
|
tst_resm(TFAIL, "Env var %s changed after fork(), parent's %s, child's %s",
|
|
penv, pvalue, cvalue);
|
|
} else {
|
|
tst_resm(TPASS, "Env var %s unchanged after fork(): %s",
|
|
penv, cvalue);
|
|
}
|
|
return 0;
|
|
|
|
}
|
|
|
|
/***************************************************************
|
|
* parent_environment - the parent side of the environment tests
|
|
* determine values for the variables
|
|
* read the values determined by the child
|
|
* compare values
|
|
***************************************************************/
|
|
void parent_environment()
|
|
{
|
|
|
|
int fildes;
|
|
char tmp_line[MAX_LINE_LENGTH];
|
|
char parent_value[MAX_LINE_LENGTH];
|
|
int index;
|
|
int ret;
|
|
char *var;
|
|
|
|
if ((fildes = open(OUTPUT_FILE,O_RDWR)) == -1) {
|
|
tst_brkm(TBROK, cleanup,
|
|
"fork() test. Parent open of temporary file failed. errno %d (%s)\n",
|
|
errno, strerror(errno));
|
|
}
|
|
for (index=0;index<NUMBER_OF_ENVIRON;index++)
|
|
{
|
|
if ((ret=read(fildes,tmp_line,MAX_LINE_LENGTH)) == 0) {
|
|
tst_resm(TBROK,"fork() test. parent_environment: failed to read from file with %d (%s)",
|
|
errno,strerror(errno));
|
|
}
|
|
else {
|
|
|
|
if ( (var=getenv(environ_list[index])) == NULL )
|
|
sprintf(parent_value,"%s:%s", environ_list[index], ENV_NOT_SET);
|
|
else
|
|
sprintf(parent_value,"%s:%s", environ_list[index], var);
|
|
|
|
cmp_env_strings(parent_value, tmp_line);
|
|
|
|
}
|
|
}
|
|
close(fildes);
|
|
|
|
}
|
|
|
|
/***************************************************************
|
|
* main() - performs tests
|
|
*
|
|
***************************************************************/
|
|
|
|
int
|
|
main(int ac, char **av)
|
|
{
|
|
int lc; /* loop counter */
|
|
const char *msg; /* message returned from parse_opts */
|
|
int kid_status; /* status returned from child */
|
|
int wait_status; /* status of wait system call in parent */
|
|
int fails; /* indicates whether to continue with tests */
|
|
|
|
/***************************************************************
|
|
* parse standard options
|
|
***************************************************************/
|
|
if ( (msg=parse_opts(ac, av, (option_t *) NULL, NULL)) != (char *) NULL ) {
|
|
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
|
|
tst_exit();
|
|
}
|
|
|
|
/***************************************************************
|
|
* perform global setup for test
|
|
***************************************************************/
|
|
setup();
|
|
|
|
/***************************************************************
|
|
* check looping state if -c option given
|
|
***************************************************************/
|
|
for (lc=0; TEST_LOOPING(lc); lc++) {
|
|
|
|
/* reset Tst_count and fail indicator in case we are looping. */
|
|
Tst_count=0;
|
|
fails = 0;
|
|
|
|
/* make the call to fork */
|
|
TEST(fork());
|
|
|
|
/* check return code */
|
|
if ( TEST_RETURN == -1 ) {
|
|
/* fork failed */
|
|
if ( STD_FUNCTIONAL_TEST ) {
|
|
tst_brkm(TFAIL, cleanup, "fork() failed with %d (%s)",
|
|
TEST_ERRNO, strerror(TEST_ERRNO));
|
|
}
|
|
}
|
|
else if (TEST_RETURN == 0) {
|
|
/* child */
|
|
if ( STD_FUNCTIONAL_TEST ) {
|
|
/* determine environment variables */
|
|
child_environment();
|
|
}
|
|
/* exit with known value */
|
|
exit(KIDEXIT);
|
|
} else {
|
|
/* parent of successful fork */
|
|
/* wait for the child to complete */
|
|
wait_status = wait(&kid_status);
|
|
if ( STD_FUNCTIONAL_TEST ) {
|
|
/* validate the child exit status */
|
|
if (wait_status == TEST_RETURN) {
|
|
if (kid_status != KIDEXIT << 8) {
|
|
tst_brkm(TBROK, cleanup,
|
|
"fork(): Incorrect child status returned on wait(): %d",
|
|
kid_status);
|
|
fails++;
|
|
}
|
|
}
|
|
else {
|
|
tst_brkm(TBROK, cleanup,
|
|
"fork(): wait() for child status failed with %d errno: %d : %s",
|
|
wait_status,errno,strerror(errno));
|
|
fails++;
|
|
}
|
|
|
|
if (fails == 0 ) {
|
|
/* verification tests */
|
|
parent_environment();
|
|
}
|
|
}
|
|
}
|
|
|
|
} /* End for TEST_LOOPING */
|
|
|
|
/***************************************************************
|
|
* cleanup and exit
|
|
***************************************************************/
|
|
cleanup();
|
|
|
|
return 0;
|
|
} /* End main */
|