Import sendmail 8.13.6

Security:       FreeBSD-SA-06:13.sendmail

1 files changed, 333 insertions, 0 deletions

diff --git a/contrib/sendmail/libsm/memstat.c b/contrib/sendmail/libsm/memstat.c
new file mode 100644
index 0000000..6c2a4d1
--- /dev/null
+++ b/contrib/sendmail/libsm/memstat.c
@@ -0,0 +1,333 @@
+/*
+ * Copyright (c) 2005 Sendmail, 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: memstat.c,v 1.4 2005/12/10 00:38:48 ca Exp $")
+
+#include <errno.h>
+
+#if USESWAPCTL
+#include <sys/stat.h>
+#include <sys/swap.h>
+
+static long sc_page_size;
+
+/*
+**  SM_MEMSTAT_OPEN -- open memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_open()
+{
+	sc_page_size = sysconf(_SC_PAGE_SIZE);
+	if (sc_page_size == -1)
+		return (errno != 0) ? errno : -1;
+	return 0;
+}
+
+/*
+**  SM_MEMSTAT_CLOSE -- close memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_close()
+{
+	return 0;
+}
+
+/*
+**  SM_MEMSTAT_GET -- get memory statistics
+**
+**	Parameters:
+**		resource -- resource to look up
+**		pvalue -- (pointer to) memory statistics value (output)
+**
+**	Results:
+**		0: success
+**		!=0: error
+*/
+
+int
+sm_memstat_get(resource, pvalue)
+	char *resource;
+	long *pvalue;
+{
+	int r;
+	struct anoninfo ai;
+
+	r = swapctl(SC_AINFO, &ai);
+	if (r == -1)
+		return (errno != 0) ? errno : -1;
+	r = ai.ani_max - ai.ani_resv;
+	r *= sc_page_size >> 10;
+   	*pvalue = r;
+	return 0;
+}
+
+#elif USEKSTAT
+
+#include <kstat.h>
+#include <sys/sysinfo.h>
+
+static kstat_ctl_t *kc;
+static kstat_t *kst;
+
+/*
+**  SM_MEMSTAT_OPEN -- open memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_open()
+{
+	kstat_named_t *kn;
+
+	kc = kstat_open();
+	if (kc == NULL)
+		return (errno != 0) ? errno : -1;
+	kst = kstat_lookup(kc, "unix", 0,
+		(name != NULL) ? name : "system_pages");
+	if (kst == 0)
+		return (errno != 0) ? errno : -2;
+	return 0;
+}
+
+/*
+**  SM_MEMSTAT_CLOSE -- close memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_close()
+{
+	int r;
+
+	if (kc == NULL)
+		return 0;
+	r = kstat_close(kc);
+	if (r != 0)
+		return (errno != 0) ? errno : -1;
+	return 0;
+}
+
+/*
+**  SM_MEMSTAT_GET -- get memory statistics
+**
+**	Parameters:
+**		resource -- resource to look up
+**		pvalue -- (pointer to) memory statistics value (output)
+**
+**	Results:
+**		0: success
+**		!=0: error
+*/
+
+int
+sm_memstat_get(resource, pvalue)
+	char *resource;
+	long *pvalue;
+{
+	int r;
+	kstat_named_t *kn;
+
+	if (kc == NULL || kst == NULL)
+		return -1;
+	if (kstat_read(kc, kst, NULL) == -1)
+		return (errno != 0) ? errno : -2;
+	kn = kstat_data_lookup(kst,
+			(resource != NULL) ? resource: "freemem");
+	if (kn == NULL)
+		return (errno != 0) ? errno : -3;
+   	*pvalue = kn->value.ul;
+	return 0;
+}
+
+#elif USEPROCMEMINFO
+
+/*
+/proc/meminfo?
+        total:    used:    free:  shared: buffers:  cached:
+Mem:  261468160 252149760  9318400        0  3854336 109813760
+Swap: 1052794880 62185472 990609408
+MemTotal:       255340 kB
+MemFree:          9100 kB
+MemShared:           0 kB
+Buffers:          3764 kB
+Cached:         107240 kB
+Active:         104340 kB
+Inact_dirty:      4220 kB
+Inact_clean:      2444 kB
+Inact_target:     4092 kB
+HighTotal:           0 kB
+HighFree:            0 kB
+LowTotal:       255340 kB
+LowFree:          9100 kB
+SwapTotal:     1028120 kB
+SwapFree:       967392 kB
+*/
+
+#include <stdio.h>
+#include <string.h>
+static FILE *fp;
+
+/*
+**  SM_MEMSTAT_OPEN -- open memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_open()
+{
+	fp = fopen("/proc/meminfo", "r");
+	return (fp != NULL) ? 0 : errno;
+}
+
+/*
+**  SM_MEMSTAT_CLOSE -- close memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_close()
+{
+	if (fp != NULL)
+	{
+		fclose(fp);
+		fp = NULL;
+	}
+	return 0;
+}
+
+/*
+**  SM_MEMSTAT_GET -- get memory statistics
+**
+**	Parameters:
+**		resource -- resource to look up
+**		pvalue -- (pointer to) memory statistics value (output)
+**
+**	Results:
+**		0: success
+**		!=0: error
+*/
+
+int
+sm_memstat_get(resource, pvalue)
+	char *resource;
+	long *pvalue;
+{
+	int r;
+	size_t l;
+	char buf[80];
+
+	if (resource == NULL)
+		return EINVAL;
+	if (pvalue == NULL)
+		return EINVAL;
+	if (fp == NULL)
+		return -1;	/* try to reopen? */
+	rewind(fp);
+	l = strlen(resource);
+	while (fgets(buf, sizeof(buf), fp) != NULL)
+	{
+		if (strncmp(buf, resource, l) == 0 && buf[l] == ':')
+		{
+			r = sscanf(buf + l + 1, "%ld", pvalue);
+			return (r > 0) ? 0 : -1;
+		}
+	}
+	return 0;
+}
+
+#else /* USEPROCMEMINFO */
+
+/*
+**  SM_MEMSTAT_OPEN -- open memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_open()
+{
+	return -1;
+}
+
+/*
+**  SM_MEMSTAT_CLOSE -- close memory statistics
+**
+**	Parameters:
+**		none
+**
+**	Results:
+**		errno as error code, 0: ok
+*/
+
+int
+sm_memstat_close()
+{
+	return 0;
+}
+
+/*
+**  SM_MEMSTAT_GET -- get memory statistics
+**
+**	Parameters:
+**		resource -- resource to look up
+**		pvalue -- (pointer to) memory statistics value (output)
+**
+**	Results:
+**		0: success
+**		!=0: error
+*/
+
+int
+sm_memstat_get(resource, pvalue)
+	char *resource;
+	long *pvalue;
+{
+	return -1;
+}
+
+#endif /* USEKSTAT */