From: Florian Forster <octo@noris.net>
Date: Fri, 13 Mar 2009 17:23:20 +0000 (+0100)
Subject: src/common.c, memory plugin: Fix a potential problem under Solaris.
X-Git-Tag: collectd-4.6.2~2^2~6
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=20f9591f4a37e0cf9bd7f8d9206c4c51a0617a63;p=collectd.git

src/common.c, memory plugin: Fix a potential problem under Solaris.

When the kstat chain has been updated (and init is called again),
get_kstat should overwrite the existing kstat pointer thingy.
---

diff --git a/src/common.c b/src/common.c
index 182f923d..122f9624 100644
--- a/src/common.c
+++ b/src/common.c
@@ -495,26 +495,26 @@ int check_create_dir (const char *file_orig)
 int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name)
 {
 	char ident[128];
+
+	*ksp_ptr = NULL;
 	
 	if (kc == NULL)
 		return (-1);
 
 	ssnprintf (ident, sizeof (ident), "%s,%i,%s", module, instance, name);
 
+	*ksp_ptr = kstat_lookup (kc, module, instance, name);
 	if (*ksp_ptr == NULL)
 	{
-		if ((*ksp_ptr = kstat_lookup (kc, module, instance, name)) == NULL)
-		{
-			ERROR ("Cound not find kstat %s", ident);
-			return (-1);
-		}
+		ERROR ("get_kstat: Cound not find kstat %s", ident);
+		return (-1);
+	}
 
-		if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED)
-		{
-			WARNING ("kstat %s has wrong type", ident);
-			*ksp_ptr = NULL;
-			return (-1);
-		}
+	if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED)
+	{
+		ERROR ("get_kstat: kstat %s has wrong type", ident);
+		*ksp_ptr = NULL;
+		return (-1);
 	}
 
 #ifdef assert
@@ -524,13 +524,13 @@ int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name)
 
 	if (kstat_read (kc, *ksp_ptr, NULL) == -1)
 	{
-		WARNING ("kstat %s could not be read", ident);
+		ERROR ("get_kstat: kstat %s could not be read", ident);
 		return (-1);
 	}
 
 	if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED)
 	{
-		WARNING ("kstat %s has wrong type", ident);
+		ERROR ("get_kstat: kstat %s has wrong type", ident);
 		return (-1);
 	}
 
diff --git a/src/memory.c b/src/memory.c
index c31b30ef..63c3e6ac 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -92,8 +92,11 @@ static int memory_init (void)
 #elif defined(HAVE_LIBKSTAT)
 	/* getpagesize(3C) tells me this does not fail.. */
 	pagesize = getpagesize ();
-	if (get_kstat (&ksp, "unix", 0, "system_pages"))
+	if (get_kstat (&ksp, "unix", 0, "system_pages") != 0)
+	{
 		ksp = NULL;
+		return (-1);
+	}
 #endif /* HAVE_LIBKSTAT */
 
 	return (0);