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📄 Makefile(346 B)
📄 Makefile.m4(1.92 KB)
📄 README(4.42 KB)
📄 assert.c(4.13 KB)
📄 assert.html(13.86 KB)
📄 b-strcmp.c(3.4 KB)
📄 b-strl.c(5 KB)
📄 cdefs.html(2.39 KB)
📄 cf.c(1.97 KB)
📄 clock.c(13.89 KB)
📄 clrerr.c(872 B)
📄 config.c(4.47 KB)
📄 debug.c(8.91 KB)
📄 debug.html(7.68 KB)
📄 errstring.c(6.03 KB)
📄 exc.c(13.05 KB)
📄 exc.html(23.27 KB)
📄 fclose.c(3.13 KB)
📄 feof.c(961 B)
📄 ferror.c(932 B)
📄 fflush.c(3.1 KB)
📄 fget.c(2.37 KB)
📄 findfp.c(10.65 KB)
📄 flags.c(1.27 KB)
📄 fopen.c(8.3 KB)
📄 fpos.c(3.12 KB)
📄 fprintf.c(1.35 KB)
📄 fpurge.c(1.15 KB)
📄 fput.c(1.25 KB)
📄 fread.c(2.28 KB)
📄 fscanf.c(1.34 KB)
📄 fseek.c(7.25 KB)
📄 fvwrite.c(6.24 KB)
📄 fvwrite.h(740 B)
📄 fwalk.c(1.41 KB)
📄 fwrite.c(1.54 KB)
📄 gen.html(910 B)
📄 get.c(1.12 KB)
📄 glue.h(731 B)
📄 heap.c(17.29 KB)
📄 heap.html(13.07 KB)
📄 index.html(5.95 KB)
📄 inet6_ntop.c(1.1 KB)
📄 io.html(26.6 KB)
📄 ldap.c(35.72 KB)
📄 local.h(9.42 KB)
📄 makebuf.c(3.36 KB)
📄 match.c(2.77 KB)
📄 mbdb.c(16.61 KB)
📄 memstat.c(5.13 KB)
📄 mpeix.c(13.84 KB)
📄 niprop.c(4.64 KB)
📄 notify.c(3.32 KB)
📄 put.c(1.61 KB)
📄 refill.c(7.09 KB)
📄 rewind.c(1.08 KB)
📄 rpool.c(11.54 KB)
📄 rpool.html(6.08 KB)
📄 sem.c(4.41 KB)
📄 setvbuf.c(4.2 KB)
📄 shm.c(2.62 KB)
📄 signal.c(6.75 KB)
📄 smstdio.c(6.14 KB)
📄 snprintf.c(2.29 KB)
📄 sscanf.c(2.26 KB)
📄 stdio.c(9.7 KB)
📄 strcasecmp.c(3.14 KB)
📄 strdup.c(2.79 KB)
📄 strerror.c(1.27 KB)
📄 strexit.c(2.76 KB)
📄 string.c(1.29 KB)
📄 stringf.c(1.77 KB)
📄 strio.c(9.18 KB)
📄 strl.c(7.52 KB)
📄 strrevcmp.c(1.61 KB)
📄 strto.c(5.45 KB)
📄 syslogio.c(4.11 KB)
📄 t-cf.c(934 B)
📄 t-event.c(1.79 KB)
📄 t-exc.c(2.75 KB)
📄 t-fget.c(1.71 KB)
📄 t-float.c(1.78 KB)
📄 t-fopen.c(875 B)
📄 t-heap.c(1.3 KB)
📄 t-inet6_ntop.c(1.4 KB)
📄 t-match.c(1.1 KB)
📄 t-memstat.c(2.17 KB)
📄 t-notify.c(1.81 KB)
📄 t-path.c(742 B)
📄 t-qic.c(5.43 KB)
📄 t-rpool.c(1.5 KB)
📄 t-scanf.c(1.38 KB)
📄 t-sem.c(5.85 KB)
📄 t-shm.c(4.42 KB)
📄 t-smstdio.c(1.55 KB)
📄 t-string.c(968 B)
📄 t-strio.c(775 B)
📄 t-strl.c(3.53 KB)
📄 t-strrevcmp.c(994 B)
📄 t-types.c(2.7 KB)
📄 test.c(2.73 KB)
📄 ungetc.c(3.93 KB)
📄 util.c(4.46 KB)
📄 vasprintf.c(2.91 KB)
📄 vfprintf.c(24.09 KB)
📄 vfscanf.c(18.76 KB)
📄 vprintf.c(999 B)
📄 vsnprintf.c(1.87 KB)
📄 wbuf.c(2.51 KB)
📄 wsetup.c(1.88 KB)
📄 xtrap.c(653 B)

Editing: t-shm.c

/*
 * Copyright (c) 2000-2002, 2004, 2005 Proofpoint, Inc. and its suppliers.
 *      All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 */

#include <sm/gen.h>
SM_RCSID("@(#)$Id: t-shm.c,v 1.23 2013-11-22 20:51:43 ca Exp $")

#include <stdio.h>

#if SM_CONF_SHM
# include <stdlib.h>
# include <unistd.h>
# include <sys/wait.h>

# include <sm/heap.h>
# include <sm/string.h>
# include <sm/test.h>
# include <sm/shm.h>

# define SHMSIZE	1024
# define SHM_MAX	6400000
# define T_SHMKEY	21

/*
**  SHMINTER -- interactive testing of shared memory
**
**	Parameters:
**		owner -- create segment.
**
**	Returns:
**		0 on success
**		< 0 on failure.
*/

int shminter __P((bool));

int
shminter(owner)
	bool owner;
{
	int *shm, shmid;
	int i, t;

shm = (int *) sm_shmstart(T_SHMKEY, SHMSIZE, 0, &shmid, owner);
	if (shm == (int *) 0)
	{
		perror("shminit failed");
		return -1;
	}

while ((t = getchar()) != EOF)
	{
		switch (t)
		{
		  case 'c':
			*shm = 0;
			break;
		  case 'i':
			++*shm;
			break;
		  case 'd':
			--*shm;
			break;
		  case 's':
			sleep(1);
			break;
		  case 'l':
			t = *shm;
			for (i = 0; i < SHM_MAX; i++)
			{
				++*shm;
			}
			if (*shm != SHM_MAX + t)
				fprintf(stderr, "error: %d != %d\n",
					*shm, SHM_MAX + t);
			break;
		  case 'v':
			printf("shmval: %d\n", *shm);
			break;
		  case 'S':
			i = sm_shmsetowner(shmid, getuid(), getgid(), 0644);
			printf("sm_shmsetowner=%d\n", i);
			break;
		}
	}
	return sm_shmstop((void *) shm, shmid, owner);
}

/*
**  SHMBIG -- testing of shared memory
**
**	Parameters:
**		owner -- create segment.
**		size -- size of segment.
**
**	Returns:
**		0 on success
**		< 0 on failure.
*/

int shmbig __P((bool, int));

int
shmbig(owner, size)
	bool owner;
	int size;
{
	int *shm, shmid;
	int i;

shm = (int *) sm_shmstart(T_SHMKEY, size, 0, &shmid, owner);
	if (shm == (int *) 0)
	{
		perror("shminit failed");
		return -1;
	}

for (i = 0; i < size / sizeof(int); i++)
		shm[i] = i;
	for (i = 0; i < size / sizeof(int); i++)
	{
		if (shm[i] != i)
		{
			fprintf(stderr, "failed at %d: %d", i, shm[i]);
		}
	}

return sm_shmstop((void *) shm, shmid, owner);
}

/*
**  SHMTEST -- test of shared memory
**
**	Parameters:
**		owner -- create segment.
**
**	Returns:
**		0 on success
**		< 0 on failure.
*/

# define MAX_CNT	10

int shmtest __P((int));

int
shmtest(owner)
	int owner;
{
	int *shm, shmid;
	int cnt = 0;

shm = (int *) sm_shmstart(T_SHMKEY, SHMSIZE, 0, &shmid, owner);
	if (shm == (int *) 0)
	{
		perror("shminit failed");
		return -1;
	}

if (owner)
	{
		int r;

r = sm_shmsetowner(shmid, getuid(), getgid(), 0660);
		SM_TEST(r == 0);
		*shm = 1;
		while (*shm == 1 && cnt++ < MAX_CNT)
			sleep(1);
		SM_TEST(cnt <= MAX_CNT);

/* release and re-acquire the segment */
		r = sm_shmstop((void *) shm, shmid, owner);
		SM_TEST(r == 0);
		shm = (int *) sm_shmstart(T_SHMKEY, SHMSIZE, 0, &shmid, owner);
		SM_TEST(shm != (int *) 0);
	}
	else
	{
		while (*shm != 1 && cnt++ < MAX_CNT)
			sleep(1);
		SM_TEST(cnt <= MAX_CNT);
		*shm = 2;

/* wait a momemt so the segment is still in use */
		sleep(2);
	}
	return sm_shmstop((void *) shm, shmid, owner);
}

int
main(argc, argv)
	int argc;
	char *argv[];
{
	bool interactive = false;
	bool owner = false;
	int big = -1;
	int ch;
	int r = 0;
	int status;
	extern char *optarg;

# define OPTIONS	"b:io"
	while ((ch = getopt(argc, argv, OPTIONS)) != -1)
	{
		switch ((char) ch)
		{
		  case 'b':
			big = atoi(optarg);
			break;

case 'i':
			interactive = true;
			break;

case 'o':
			owner = true;
			break;

default:
			break;
		}
	}

if (interactive)
		r = shminter(owner);
	else if (big > 0)
		r = shmbig(true, big);
	else
	{
		pid_t pid;
		extern int SmTestNumErrors;

if ((pid = fork()) < 0)
		{
			perror("fork failed\n");
			return -1;
		}

sm_test_begin(argc, argv, "test shared memory");
		if (pid == 0)
		{
			/* give the parent the chance to setup data */
			sleep(1);
			r = shmtest(false);
		}
		else
		{
			r = shmtest(true);
			(void) wait(&status);
		}
		SM_TEST(r == 0);
		if (SmTestNumErrors > 0)
			printf("add -DSM_CONF_SHM=0 to confENVDEF in devtools/Site/site.config.m4\nand start over.\n");
		return sm_test_end();
	}
	return r;
}
#else /* SM_CONF_SHM */
int
main(argc, argv)
	int argc;
	char *argv[];
{
	printf("No support for shared memory configured on this machine\n");
	return 0;
}
#endif /* SM_CONF_SHM */

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Editing: t-shm.c

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