uspace/app/killall/killall.c

   1 /*
   2  * Copyright (c) 2010 Martin Decky
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @addtogroup killall
  30  * @{
  31  */
  32 /**
  33  * @file Forcefully terminate a task specified by name.
  34  */
  35
  36 #include <errno.h>
  37 #include <stdio.h>
  38 #include <task.h>
  39 #include <stats.h>
  40 #include <str_error.h>
  41 #include <malloc.h>
  42
  43 #define NAME  "killall"
  44
  45 static void print_syntax(void)
  46 {
  47         printf("Syntax: " NAME " <task name>\n");
  48 }
  49
  50 int main(int argc, char *argv[])
  51 {
  52         if (argc != 2) {
  53                 print_syntax();
  54                 return 1;
  55         }
  56
  57         size_t count;
  58         stats_task_t *stats_tasks = stats_get_tasks(&count);
  59
  60         if (stats_tasks == NULL) {
  61                 fprintf(stderr, "%s: Unable to get tasks\n", NAME);
  62                 return 2;
  63         }
  64
  65         size_t i;
  66         for (i = 0; i < count; i++) {
  67                 if (str_cmp(stats_tasks[i].name, argv[1]) == 0) {
  68                         task_id_t taskid = stats_tasks[i].task_id;
  69                         int rc = task_kill(taskid);
  70                         if (rc != EOK)
  71                                 printf("Failed to kill task ID %" PRIu64 ": %s\n",
  72                                     taskid, str_error(rc));
  73                         else
  74                                 printf("Killed task ID %" PRIu64 "\n", taskid);
  75                 }
  76         }
  77
  78         free(stats_tasks);
  79
  80         return 0;
  81 }
  82
  83 /** @}
  84  */