Print non-data stuff (errors, warnings, hints) on stderr.

git-svn-id: svn://svn.berlios.de//socketcan/trunk@861 030b6a49-0b11-0410-94ab-b0dab22257f2

diff --git a/can-utils/candump.c b/can-utils/candump.c
index 16f9455c5c0156d96514520acbe0404fc89390da..940f81de5ec1193577231398ecf71e405674d223 100644 (file)
--- a/can-utils/candump.c
+++ b/can-utils/candump.c
@@ -166,7 +166,7 @@ int idx2dindex(int ifidx, int socket) {
                        break;
 
        if (i == MAXIFNAMES) {
-               printf("Interface index cache only supports %d interfaces.\n",
+               fprintf(stderr, "Interface index cache only supports %d interfaces.\n",
                       MAXIFNAMES);
                exit(1);
        }
@@ -242,7 +242,7 @@ int main(int argc, char **argv)
                        timestamp = optarg[0];
                        if ((timestamp != 'a') && (timestamp != 'A') &&
                            (timestamp != 'd') && (timestamp != 'z')) {
-                               printf("%s: unknown timestamp mode '%c' - ignored\n",
+                               fprintf(stderr, "%s: unknown timestamp mode '%c' - ignored\n",
                                       basename(argv[0]), optarg[0]);
                                timestamp = 0;
                        }
@@ -275,7 +275,7 @@ int main(int argc, char **argv)
                case 'b':
                case 'B':
                        if (strlen(optarg) >= IFNAMSIZ) {
-                               printf("Name of CAN device '%s' is too long!\n\n", optarg);
+                               fprintf(stderr, "Name of CAN device '%s' is too long!\n\n", optarg);
                                return 1;
                        } else {
                                bridge = socket(PF_CAN, SOCK_RAW, CAN_RAW);
@@ -335,7 +335,7 @@ int main(int argc, char **argv)
 
        if (silent == SILENT_INI) {
                if (log) {
-                       printf("\nDisabled standard output while logging.");
+                       fprintf(stderr, "\nDisabled standard output while logging.");
                        silent = SILENT_ON; /* disable output on stdout */
                } else
                        silent = SILENT_OFF; /* default output */
@@ -344,7 +344,7 @@ int main(int argc, char **argv)
        currmax = argc - optind; /* find real number of CAN devices */
 
        if (currmax > MAXSOCK) {
-               printf("More than %d CAN devices given on commandline!\n", MAXSOCK);
+               fprintf(stderr, "More than %d CAN devices given on commandline!\n", MAXSOCK);
                return 1;
        }
 
@@ -369,7 +369,7 @@ int main(int argc, char **argv)
                        nbytes = strlen(ptr); /* no ',' found => no filter definitions */
 
                if (nbytes >= IFNAMSIZ) {
-                       printf("name of CAN device '%s' is too long!\n", ptr);
+                       fprintf(stderr, "name of CAN device '%s' is too long!\n", ptr);
                        return 1;
                }
 
@@ -429,12 +429,12 @@ int main(int argc, char **argv)
                                        numfilter++;
                                } else if (sscanf(ptr, "#%lx",
                                                  (long unsigned int *)&err_mask) != 1) { 
-                                       printf("Error in filter option parsing: '%s'\n", ptr);
+                                       fprintf(stderr, "Error in filter option parsing: '%s'\n", ptr);
                                        exit(1);
                                }
 
                                if (numfilter > MAXFILTER) {
-                                       printf("Too many filters specified for '%s'.\n",
+                                       fprintf(stderr, "Too many filters specified for '%s'.\n",
                                               ifr.ifr_name);
                                        exit(1);
                                }
@@ -478,7 +478,7 @@ int main(int argc, char **argv)
                if (silent != SILENT_ON)
                        printf("\nWarning: console output active while logging!");
 
-               printf("\nEnabling Logfile '%s'\n\n", fname);
+               fprintf(stderr, "\nEnabling Logfile '%s'\n\n", fname);
 
                logfile = fopen(fname, "w");
                if (!logfile) {