Patch from Hideki IWAMOTO, output debugging messages to stderr

diff --git a/networking/tftp.c b/networking/tftp.c
index 0bc562d..f00b64b 100644 (file)
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -292,10 +292,10 @@ static inline int tftp(const int cmd, const struct hostent *host,
                        len = cp - buf;
 
 #ifdef CONFIG_FEATURE_TFTP_DEBUG
-                       printf("sending %u bytes\n", len);
+                       fprintf(stderr, "sending %u bytes\n", len);
                        for (cp = buf; cp < &buf[len]; cp++)
-                               printf("%02x ", *cp);
-                       printf("\n");
+                               fprintf(stderr, "%02x ", *cp);
+                       fprintf(stderr, "\n");
 #endif
                        if (sendto(socketfd, buf, len, 0,
                                        (struct sockaddr *) &sa, sizeof(sa)) < 0) {
@@ -371,7 +371,7 @@ static inline int tftp(const int cmd, const struct hostent *host,
                tmp = ntohs(*((unsigned short *) &buf[2]));
 
 #ifdef CONFIG_FEATURE_TFTP_DEBUG
-               printf("received %d bytes: %04x %04x\n", len, opcode, tmp);
+               fprintf(stderr, "received %d bytes: %04x %04x\n", len, opcode, tmp);
 #endif
 
                if (opcode == TFTP_ERROR) {
@@ -420,7 +420,7 @@ static inline int tftp(const int cmd, const struct hostent *host,
                                                         opcode = TFTP_ACK;
                                                 }
 #ifdef CONFIG_FEATURE_TFTP_DEBUG
-                                                printf("using blksize %u\n", blksize);
+                                                fprintf(stderr, "using blksize %u\n", blksize);
 #endif
                                                 tftp_bufsize = blksize + 4;
                                                 block_nr = 0;
@@ -567,7 +567,7 @@ int tftp_main(int argc, char **argv)
        port = bb_lookup_port(argv[optind + 1], "udp", 69);
 
 #ifdef CONFIG_FEATURE_TFTP_DEBUG
-       printf("using server \"%s\", remotefile \"%s\", "
+       fprintf(stderr, "using server \"%s\", remotefile \"%s\", "
                "localfile \"%s\".\n",
                inet_ntoa(*((struct in_addr *) host->h_addr)),
                remotefile, localfile);