3 files changed, 25 insertions, 18 deletions
diff --git a/lib/os_mon/c_src/Makefile.in b/lib/os_mon/c_src/Makefile.in
index 1a371eb380..bac0413ece 100644
--- a/lib/os_mon/c_src/Makefile.in
+++ b/lib/os_mon/c_src/Makefile.in
@@ -1,7 +1,7 @@
 #
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 1997-2009. All Rights Reserved.
+# Copyright Ericsson AB 1997-2011. All Rights Reserved.
 # 
 # The contents of this file are subject to the Erlang Public License,
 # Version 1.1, (the "License"); you may not use this file except in
@@ -82,13 +82,9 @@ ALL_CFLAGS = @CFLAGS@ @DEFS@ $(CFLAGS)
 # Targets
 # ----------------------------------------------------
 
-debug opt: $(OBJDIR) $(BINDIR) $(TARGET_FILES)
+_create_dirs := $(shell mkdir -p $(OBJDIR) $(BINDIR))
 
-$(OBJDIR):
-	-@mkdir -p $(OBJDIR)
-
-$(BINDIR):
-	-@mkdir -p $(BINDIR)
+debug opt: $(TARGET_FILES)
 
 clean:
 	rm -f $(TARGET_FILES)
diff --git a/lib/os_mon/c_src/cpu_sup.c b/lib/os_mon/c_src/cpu_sup.c
index fbf318c614..9c5f9a6aa5 100644
--- a/lib/os_mon/c_src/cpu_sup.c
+++ b/lib/os_mon/c_src/cpu_sup.c
@@ -1,7 +1,7 @@
 /*
  * %CopyrightBegin%
  * 
- * Copyright Ericsson AB 1997-2009. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2011. All Rights Reserved.
  * 
  * The contents of this file are subject to the Erlang Public License,
  * Version 1.1, (the "License"); you may not use this file except in
@@ -191,7 +191,10 @@ int main(int argc, char** argv) {
 static cpu_t *read_procstat(FILE *fp, cpu_t *cpu) {
     char buffer[BUFFERSIZE];
 
-    fgets(buffer, BUFFERSIZE, fp);
+    if (fgets(buffer, BUFFERSIZE, fp) == NULL) {
+	memset(cpu, 0, sizeof(cpu_t));
+	return cpu;
+    }
     sscanf(buffer, "cpu%u %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu",
 	&(cpu->id),
 	&(cpu->user),
@@ -223,7 +226,11 @@ static void util_measure(unsigned int **result_vec, int *result_sz) {
 	return;
     }
 
-    fgets(buffer, BUFFERSIZE, fp); /*ignore read*/
+	/*ignore read*/
+    if (fgets(buffer, BUFFERSIZE, fp) == NULL) {
+	*result_sz = 0;
+	return;
+    }
     rv = *result_vec; 
     rv[0] = no_of_cpus;
     rv[1] = CU_VALUES;
@@ -447,8 +454,12 @@ static void sendv(unsigned int data[], int ints) {
 }
 
 static void error(char* err_msg) {
-  write(FD_ERR, err_msg, strlen(err_msg));
-  write(FD_ERR, "\n", 1);
+  /* 
+   * if we get error here we have trouble,
+   * silence unnecessary warnings
+   */
+  if(write(FD_ERR, err_msg, strlen(err_msg)));
+  if(write(FD_ERR, "\n", 1));
   exit(-1);
 }
 
diff --git a/lib/os_mon/c_src/memsup.c b/lib/os_mon/c_src/memsup.c
index 241e7718db..b6e417eaa0 100644
--- a/lib/os_mon/c_src/memsup.c
+++ b/lib/os_mon/c_src/memsup.c
@@ -327,27 +327,27 @@ get_mem_procfs(memory_ext *me){
     /* Total and free is NEEDED! */
     
     bp = strstr(buffer, "MemTotal:");    
-    if (sscanf(bp, "MemTotal: %lu kB\n", &(me->total)))  me->flag |= F_MEM_TOTAL;
+    if (bp != NULL && sscanf(bp, "MemTotal: %lu kB\n", &(me->total)))  me->flag |= F_MEM_TOTAL;
 
     bp = strstr(buffer, "MemFree:");    
-    if (sscanf(bp, "MemFree: %lu kB\n", &(me->free)))    me->flag |= F_MEM_FREE;
+    if (bp != NULL && sscanf(bp, "MemFree: %lu kB\n", &(me->free)))    me->flag |= F_MEM_FREE;
     
     /* Extensions */
     
     bp = strstr(buffer, "Buffers:");    
-    if (sscanf(bp, "Buffers: %lu kB\n", &(me->buffered))) me->flag |= F_MEM_BUFFERS;
+    if (bp != NULL && sscanf(bp, "Buffers: %lu kB\n", &(me->buffered))) me->flag |= F_MEM_BUFFERS;
     
     bp = strstr(buffer, "Cached:");    
-    if (sscanf(bp, "Cached: %lu kB\n", &(me->cached)))   me->flag |= F_MEM_CACHED;
+    if (bp != NULL && sscanf(bp, "Cached: %lu kB\n", &(me->cached)))   me->flag |= F_MEM_CACHED;
     
 
     /* Swap */
     
     bp = strstr(buffer, "SwapTotal:");    
-    if (sscanf(bp, "SwapTotal: %lu kB\n", &(me->total_swap))) me->flag |= F_SWAP_TOTAL;
+    if (bp != NULL && sscanf(bp, "SwapTotal: %lu kB\n", &(me->total_swap))) me->flag |= F_SWAP_TOTAL;
     
     bp = strstr(buffer, "SwapFree:");    
-    if (sscanf(bp, "SwapFree: %lu kB\n", &(me->free_swap))) me->flag |= F_SWAP_FREE;
+    if (bp != NULL && sscanf(bp, "SwapFree: %lu kB\n", &(me->free_swap))) me->flag |= F_SWAP_FREE;
     
     me->pagesize = 1024; /* procfs defines its size in kB */