Add the '--ipcprot' option to change the protection mode of the command

socket. From Arnaud Bergeron.

btpd/cli_if.c

@@ -274,7 +274,7 @@ ipc_init(void)
             btpd_err("bind: %s\n", strerror(errno));
     }
 
-    if (chmod(addr.sun_path, 0600) == -1)
+    if (chmod(addr.sun_path, ipcprot) == -1)
         btpd_err("chmod: %s (%s).\n", addr.sun_path, strerror(errno));
     listen(sd, 4);
     set_nonblocking(sd);

btpd/main.c

@@ -89,6 +89,10 @@ usage(void)
         "--help\n"
         "\tShow this text.\n"
         "\n"
+        "--ipcprot prot\n"
+        "\tChange the protection mode on the command socket to prot.\n"
+        "\tThe mode must be specified in octal. Default is 0600.\n"
+        "\n"
         "--logfile file\n"
         "\tWhere to put the logfile. By default it's put in the btpd dir.\n"
         "\n"
@@ -129,6 +133,7 @@ static struct option longopts[] = {
     { "max-peers", required_argument,   &longval,       5 },
     { "no-daemon", no_argument,         &longval,       6 },
     { "logfile", required_argument,     &longval,       7 },
+    { "ipcprot", required_argument,     &longval,       8 },
     { "help",   no_argument,            &longval,       128 },
     { NULL,     0,                      NULL,           0 }
 };
@@ -174,6 +179,9 @@ main(int argc, char **argv)
             case 7:
                 log = optarg;
                 break;
+            case 8:
+                ipcprot = strtol(optarg, NULL, 8);
+                break;
             default:
                 usage();
             }

btpd/opts.c

@@ -12,3 +12,4 @@ unsigned net_bw_limit_in;
 unsigned net_bw_limit_out;
 int net_port = 6881;
 off_t cm_alloc_size = 2048 * 1024;
+int ipcprot = 0600;

btpd/opts.h

@@ -9,5 +9,6 @@ extern unsigned net_bw_limit_in;
 extern unsigned net_bw_limit_out;
 extern int net_port;
 extern off_t cm_alloc_size;
+extern int ipcprot;
 
 #endif