src/tools/fs_shell/fs_shell_command_beos.cpp

   1 /*
   2  * Copyright 2005-2007, Ingo Weinhold, bonefish@cs.tu-berlin.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include "fs_shell_command_beos.h"
   7
   8 #include <stdio.h>
   9 #include <string.h>
  10
  11 #include <OS.h>
  12
  13 #include "fs_shell_command.h"
  14
  15
  16 bool gUsesFifos = false;
  17
  18
  19 bool
  20 send_external_command(const char *command, int *result)
  21 {
  22         int commandLen = strlen(command);
  23         if (commandLen > kMaxCommandLength) {
  24                 fprintf(stderr, "Error: Command line too long.\n");
  25                 return false;
  26         }
  27
  28         char _message[sizeof(external_command_message) + kMaxCommandLength];
  29         external_command_message* message = (external_command_message*)_message;
  30         strcpy(message->command, command);
  31
  32         // find the command port
  33         port_id commandPort = find_port(kFSShellCommandPort);
  34         if (commandPort < 0) {
  35                 fprintf(stderr, "Error: Couldn't find fs_shell command port.\n");
  36                 return false;
  37         }
  38
  39         // create a reply port
  40         port_id replyPort = create_port(1, "fs shell reply port");
  41         if (replyPort < 0) {
  42                 fprintf(stderr, "Error: Failed to create a reply port: %s\n",
  43                         strerror(replyPort));
  44                 return false;
  45         }
  46         message->reply_port = replyPort;
  47
  48         // send the command message
  49         status_t error;
  50         do {
  51                 error = write_port(commandPort, 0, message,
  52                         sizeof(external_command_message) + commandLen);
  53         } while (error == B_INTERRUPTED);
  54
  55         if (error != B_OK) {
  56                 fprintf(stderr, "Error: Failed to send command: %s\n", strerror(error));
  57                 return false;
  58         }
  59
  60         // wait for the reply
  61         external_command_reply reply;
  62         ssize_t bytesRead;
  63         do {
  64                 int32 code;
  65                 bytesRead = read_port(replyPort, &code, &reply, sizeof(reply));
  66         } while (bytesRead == B_INTERRUPTED);
  67
  68         if (bytesRead < 0) {
  69                 fprintf(stderr, "Error: Failed to read reply from fs_shell: %s\n",
  70                         strerror(bytesRead));
  71                 return false;
  72         }
  73
  74         *result = reply.error;
  75         return true;
  76 }
  77