Fix warnings from gcc 4.6.3

commandline.c

@@ -769,13 +769,17 @@ int app_server_start(const struct cli_parsed *parsed, void *context)
 	    close_logging();
 	    int fd;
 	    if ((fd = open("/dev/null", O_RDWR, 0)) == -1)
-	      _exit(WHY_perror("open"));
+	      _exit(WHY_perror("open(\"/dev/null\")"));
 	    if (setsid() == -1)
 	      _exit(WHY_perror("setsid"));
-	    (void)chdir(dir);
-	    (void)dup2(fd, 0);
-	    (void)dup2(fd, 1);
-	    (void)dup2(fd, 2);
+	    if (chdir(dir) == -1)
+	      _exit(WHYF_perror("chdir(%s)", alloca_str_toprint(dir)));
+	    if (dup2(fd, 0) == -1)
+	      _exit(WHYF_perror("dup2(%d,0)", fd));
+	    if (dup2(fd, 1) == -1)
+	      _exit(WHYF_perror("dup2(%d,1)", fd));
+	    if (dup2(fd, 2) == -1)
+	      _exit(WHYF_perror("dup2(%d,2)", fd));
 	    if (fd > 2)
 	      (void)close(fd);
 	    /* The execpath option is provided so that a JNI call to "start" can be made which

lsif.c

@@ -76,25 +76,29 @@ int scrapeProcNetRoute()
   if (config.debug.overlayinterfaces) DEBUG("called");
 
   FILE *f=fopen("/proc/net/route","r");
-  if (!f) return WHY_perror("fopen(\"/proc/net/route\")");
+  if (!f)
+    return WHY_perror("fopen(\"/proc/net/route\")");
 
   char line[1024],name[1024],dest[1024],mask[1024];
 
   /* skip header line */
-  line[0]=0; fgets(line,1024,f);
+  line[0] = '\0';
+  if (fgets(line,1024,f) == NULL)
+    return WHYF_perror("fgets(%p,1024,\"/proc/net/route\")", line);
 
-  line[0]=0; fgets(line,1024,f);
+  line[0] = '\0';
+  if (fgets(line,1024,f) == NULL)
+    return WHYF_perror("fgets(%p,1024,\"/proc/net/route\")", line);
   while(line[0]) {
     int r;
-    if ((r=sscanf(line,"%s %s %*s %*s %*s %*s %*s %s",name,dest,mask))==3)
-      {
+    if ((r=sscanf(line,"%s %s %*s %*s %*s %*s %*s %s",name,dest,mask))==3) {
       struct in_addr addr = {.s_addr=strtol(dest,NULL,16)};
       struct in_addr netmask = {.s_addr=strtol(mask,NULL,16)};
-	
       overlay_interface_register(name,addr,netmask);
     }
-
-    line[0]=0; fgets(line,1024,f);    
+    line[0] = '\0';
+    if (fgets(line,1024,f) == NULL)
+      return WHYF_perror("fgets(%p,1024,\"/proc/net/route\")", line);
   }
   fclose(f);
   return 0;

monitor-cli.c

@@ -67,11 +67,23 @@ int app_monitor_cli(const struct cli_parsed *parsed, void *context)
       
       if (fds[0].revents & POLLIN){
 	char buff[256];
-	int bytes = read(STDIN_FILENO, buff, sizeof(buff));
+	ssize_t bytes = read(STDIN_FILENO, buff, sizeof buff);
+	if (bytes == -1)
+	  WHYF_perror("read(%d,%p,%ld)", STDIN_FILENO, buff, (long)sizeof buff);
+	else {
 	  set_block(monitor_client_fd);
-	write(monitor_client_fd, buff, bytes);
+	  size_t to_write = bytes;
+	  size_t written = 0;
+	  while (written < to_write) {
+	    ssize_t n = write(monitor_client_fd, buff + written, to_write - written);
+	    if (n == -1)
+	      WHYF_perror("write(%d,%p,%ld)", monitor_client_fd, buff, (long)bytes);
+	    else
+	      written += n;
+	  }
 	  set_nonblock(monitor_client_fd);
 	}
+      }
       
       if (fds[1].revents & POLLIN){
 	if (monitor_client_read(monitor_client_fd, state, monitor_handlers, 

monitor.c

@@ -542,7 +542,10 @@ static int monitor_call_dtmf(const struct cli_parsed *parsed, void *context)
   return 0;
 }
 
-struct cli_schema monitor_options[]={
+static int monitor_help(const struct cli_parsed *parsed, void *context);
+
+struct cli_schema monitor_commands[] = {
+  {monitor_help,{"help",NULL},0,""},
   {monitor_set,{"monitor","vomp","<codec>","...",NULL},0,""},
   {monitor_set,{"monitor","<type>",NULL},0,""},
   {monitor_clear,{"ignore","<type>",NULL},0,""},
@@ -562,12 +565,32 @@ int monitor_process_command(struct monitor_context *c)
   int argc = parse_argv(c->line, ' ', argv, 16);
   
   struct cli_parsed parsed;
-  int res = cli_parse(argc, (const char *const*)argv, monitor_options, &parsed);
+  int res = cli_parse(argc, (const char *const*)argv, monitor_commands, &parsed);
   if (res == -1 || cli_invoke(&parsed, c))
     return monitor_write_error(c, "Invalid command");
   return 0;
 }
 
+static int monitor_help(const struct cli_parsed *parsed, void *context)
+{
+  struct monitor_context *c=context;
+  strbuf b = strbuf_alloca(16384);
+  strbuf_puts(b, "\nINFO:Usage\n");
+  unsigned cmd;
+  for (cmd = 0; monitor_commands[cmd].function; ++cmd) {
+    unsigned opt;
+    const char *word;
+    for (opt = 0; (word = monitor_commands[cmd].words[opt]); ++opt) {
+      if (word[0] == '\\')
+	++word;
+      strbuf_sprintf(b, " %s", word);
+    }
+    strbuf_puts(b, "\n");
+  }
+  (void)write_all(c->alarm.poll.fd, strbuf_str(b), strbuf_len(b));
+  return 0;
+}
+
 int monitor_announce_bundle(rhizome_manifest *m)
 {
   int i;

overlay_packetradio.c

@@ -39,11 +39,11 @@ int overlay_packetradio_setup_port(overlay_interface *interface)
   tcsetattr(interface->alarm.poll.fd, TCSANOW, &t);
 
   // Ask radio to report RSSI
-  write(interface->alarm.poll.fd,"\r",1);
+  (void)write_all(interface->alarm.poll.fd,"\r",1);
   usleep(1200000);
-  write(interface->alarm.poll.fd,"+++",3);
+  (void)write_all(interface->alarm.poll.fd,"+++",3);
   usleep(1200000);
-  write(interface->alarm.poll.fd,"\rAT&T\rAT&T=RSSI\rATO\r",20);
+  (void)write_all(interface->alarm.poll.fd,"\rAT&T\rAT&T=RSSI\rATO\r",20);
   if (config.debug.packetradio) {
     DEBUGF("Enabled RSSI reporting for RFD900 radios");
     DEBUGF("Sent ATO to make sure we are in on-line mode");
@@ -55,7 +55,7 @@ int overlay_packetradio_setup_port(overlay_interface *interface)
     int i;
     for (i=0;i<sizeof buff;i++)
       buff[i]=i;
-    write(interface->alarm.poll.fd,buff,sizeof buff);
+    (void)write_all(interface->alarm.poll.fd,buff,sizeof buff);
   }
   
   set_nonblock(interface->alarm.poll.fd);

rhizome_direct_http.c

@@ -378,10 +378,7 @@ int rhizome_direct_process_mime_line(rhizome_http_request *r,char *buffer,int co
       r->field_file=fopen(filename,"w");
       if (!r->field_file) {
 	WHYF_perror("fopen(%s, \"w\")", alloca_str_toprint(filename));
-	rhizome_direct_clear_temporary_files(r);
-	rhizome_server_simple_http_response
-	  (r, 500, "<html><h1>Sorry, couldn't complete your request, reasonable as it was.  Perhaps try again later.</h1></html>\r\n");
-	return -1;
+	goto scram;
       }
       r->source_flags=RD_MIME_STATE_BODY;
     } else {
@@ -414,15 +411,23 @@ int rhizome_direct_process_mime_line(rhizome_http_request *r,char *buffer,int co
   case RD_MIME_STATE_BODY:
     if (boundaryLine) {
       r->source_flags=RD_MIME_STATE_PARTHEADERS;
-
-      /* We will have written an extra CRLF to the end of the file,
-	 so prune that off. */
-      fflush(r->field_file);
-      int fd=fileno(r->field_file);
-      off_t correct_size=ftell(r->field_file)-2;
-      ftruncate(fd,correct_size);
-      fclose(r->field_file);
-      r->field_file=NULL;
+      /* We will have written an extra CRLF to the end of the file, so prune that off. */
+      if (fflush(r->field_file) == EOF) {
+	WHYF_perror("fflush()");
+	goto scram;
+      }
+      int fd = fileno(r->field_file);
+      off_t correct_size = ftell(r->field_file) - 2;
+      if (ftruncate(fd,correct_size) == -1) {
+	WHYF_perror("ftruncate()");
+	goto scram;
+      }
+      if (fclose(r->field_file) == EOF) {
+	WHYF_perror("fclose()");
+	r->field_file = NULL;
+	goto scram;
+      }
+      r->field_file = NULL;
     }
     else {
       int written=fwrite(r->request,count,1,r->field_file);
@@ -443,6 +448,16 @@ int rhizome_direct_process_mime_line(rhizome_http_request *r,char *buffer,int co
     return rhizome_direct_form_received(r);
   }
   return 0;
+
+scram:
+  if (r->field_file) {
+    if (fclose(r->field_file) == EOF)
+      WARNF_perror("fclose()");
+  }
+  rhizome_direct_clear_temporary_files(r);
+  rhizome_server_simple_http_response(r, 500,
+      "<html><h1>Sorry, couldn't complete your request, reasonable as it was.  Perhaps try again later.</h1></html>\r\n");
+  return -1;
 }
 
 int rhizome_direct_process_post_multipart_bytes(rhizome_http_request *r,const char *bytes,int count)

server.c

@@ -65,9 +65,8 @@ int server_pid()
   FILE *f = NULL;
   if ((f = fopen(filename, "r"))) {
     char buf[20];
-    fgets(buf, sizeof buf, f);
+    int pid = (fgets(buf, sizeof buf, f) != NULL) ? atoi(buf) : -1;
     fclose(f);
-    int pid = atoi(buf);
     if (pid > 0 && kill(pid, 0) != -1)
       return pid;
     INFOF("Unlinking stale pidfile %s", filename);

srandomdev.c

@@ -56,6 +56,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #endif
 
 #include "os.h"
+#include "log.h"
 #include <fcntl.h>
 #include <stdlib.h>
 #include <time.h>
@@ -63,19 +64,21 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 void
 srandomdev(void)
 {
-        struct timeval tv;
   unsigned int seed;
+  int seeded = 0;
 #ifndef WIN32
   FILE *fd;
-
   fd = fopen("/dev/urandom", "r");
   if (fd >= 0) {
-                fread(&seed, sizeof seed, 1, fd);
+    if (fread(&seed, sizeof seed, 1, fd) != 1)
+      WARNF("fread(\"/dev/urandom\") failed -- falling back to gettimeofday()");
+    else
+      seeded = 1;
     fclose(fd);
-        } else 
+  }
 #endif
-		{
-
+  if (!seeded) {
+    struct timeval tv;
     gettimeofday(&tv, NULL);
     seed = (getpid() << 16) ^ tv.tv_sec ^ tv.tv_usec;
   }