rely on what the function returns. errno is only for informatio not for detection...

[rrdtool-all.git] / program / src / rrd_tool.c

diff --git a/program/src/rrd_tool.c b/program/src/rrd_tool.c
index 3331a4ef90fdd8493ef9ccb40bc89c3abeb45476..dfd9890ff2157ac9b333eeb6b664fbc3787b66a5 100644 (file)
--- a/program/src/rrd_tool.c
+++ b/program/src/rrd_tool.c
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * RRDtool 1.2.24  Copyright by Tobi Oetiker, 1997-2007
+ * RRDtool 1.2.28  Copyright by Tobi Oetiker, 1997-2008
  *****************************************************************************
  * rrd_tool.c  Startup wrapper
  *****************************************************************************/
@@ -22,7 +22,7 @@ void PrintUsage(char *cmd)
 {
 
     char help_main[] =
-          "RRDtool " PACKAGE_VERSION "  Copyright 1997-2007 by Tobias Oetiker <tobi@oetiker.ch>\n"
+          "RRDtool " PACKAGE_VERSION "  Copyright 1997-2008 by Tobias Oetiker <tobi@oetiker.ch>\n"
            "               Compiled " __DATE__ " " __TIME__ "\n\n"
           "Usage: rrdtool [options] command command_options\n\n";
 
@@ -379,8 +379,7 @@ int main(int argc, char *argv[])
                 == 0 ){
 
 #ifdef HAVE_CHROOT
-                chroot(argv[2]);
-                if (errno!=0){
+                if (chroot(argv[2]) != 0){
                    fprintf(stderr,"ERROR: can't change root to '%s' errno=%d\n",
                            argv[2],errno);
                     exit(errno);
@@ -397,8 +396,7 @@ int main(int argc, char *argv[])
              }
           }
           if (strcmp(firstdir,"")){
-             chdir(firstdir);
-             if (errno!=0){
+             if (chdir(firstdir)!=0){
                 fprintf(stderr,"ERROR: %s\n",rrd_strerror(errno));
                 exit(errno);
              }
@@ -496,8 +494,7 @@ int HandleInputLine(int argc, char **argv, FILE* out)
              return(1); 
           }
 #endif
-          chdir(argv[2]);
-          if (errno!=0){
+          if (chdir(argv[2]) != 0){
              printf("ERROR: %s\n",rrd_strerror(errno));
             return(1);
           }
@@ -529,8 +526,7 @@ int HandleInputLine(int argc, char **argv, FILE* out)
              return(1); 
           }
 #endif
-          mkdir(argv[2],0777);
-          if (errno!=0){
+          if (mkdir(argv[2],0777) != 0){
              printf("ERROR: %s\n",rrd_strerror(errno));
              return(1);
           }