chiark / gitweb /
make ATTR{[$SUBSYSTEM/$KERNEL]<attr>}="<value>" working
[elogind.git] / udevcontrol.c
index 8add09e..b20ce2e 100644 (file)
@@ -1,7 +1,5 @@
 /*
- * udevcontrol.c
- *
- * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2005-2006 Kay Sievers <kay.sievers@vrfy.org>
  *
  *     This program is free software; you can redistribute it and/or modify it
  *     under the terms of the GNU General Public License as published by the
@@ -14,7 +12,7 @@
  * 
  *     You should have received a copy of the GNU General Public License along
  *     with this program; if not, write to the Free Software Foundation, Inc.,
- *     675 Mass Ave, Cambridge, MA 02139, USA.
+ *     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  *
  */
 
@@ -33,7 +31,6 @@
 #include "udev.h"
 #include "udevd.h"
 
-/* global variables */
 static int sock = -1;
 static int udev_log = 0;
 
@@ -51,16 +48,15 @@ void log_message (int priority, const char *format, ...)
 }
 #endif
 
-
 int main(int argc, char *argv[], char *envp[])
 {
-       static struct udevd_msg usend_msg;
+       static struct udevd_ctrl_msg ctrl_msg;
        struct sockaddr_un saddr;
        socklen_t addrlen;
        const char *env;
+       const char *arg;
        const char *val;
        int *intval;
-       int i;
        int retval = 1;
 
        env = getenv("UDEV_LOG");
@@ -74,49 +70,78 @@ int main(int argc, char *argv[], char *envp[])
                fprintf(stderr, "missing command\n\n");
                goto exit;
        }
-
-       memset(&usend_msg, 0x00, sizeof(struct udevd_msg));
-       strcpy(usend_msg.magic, UDEV_MAGIC);
-
-       for (i = 1 ; i < argc; i++) {
-               char *arg = argv[i];
-
-               if (!strcmp(arg, "stop_exec_queue"))
-                       usend_msg.type = UDEVD_STOP_EXEC_QUEUE;
-               else if (!strcmp(arg, "start_exec_queue"))
-                       usend_msg.type = UDEVD_START_EXEC_QUEUE;
-               else if (!strcmp(arg, "reload_rules"))
-                       usend_msg.type = UDEVD_RELOAD_RULES;
-               else if (!strncmp(arg, "log_priority=", strlen("log_priority="))) {
-                       intval = (int *) usend_msg.envbuf;
-                       val = &arg[strlen("log_priority=")];
-                       usend_msg.type = UDEVD_SET_LOG_LEVEL;
-                       *intval = log_priority(val);
-                       info("send log_priority=%i", *intval);
-               } else if (!strncmp(arg, "max_childs=", strlen("max_childs="))) {
-                       intval = (int *) usend_msg.envbuf;
-                       val = &arg[strlen("max_childs=")];
-                       usend_msg.type = UDEVD_SET_MAX_CHILDS;
-                       *intval = atoi(val);
-                       info("send max_childs=%i", *intval);
-               } else if (strcmp(arg, "help") == 0  || strcmp(arg, "--help") == 0  || strcmp(arg, "-h") == 0) {
-                       printf("Usage: udevcontrol COMMAND\n"
-                               "  log_priority=<level> set the udev log level for the daemon\n"
-                               "  stop_exec_queue      keep udevd from executing events, queue only\n"
-                               "  start_exec_queue     execute events, flush queue\n"
-                               "  reload_rules         reloads the rules files\n"
-                               "  max_childs=<N>       maximum number of childs running at the same time\n"
-                               "  --help               print this help text\n\n");
-                       exit(0);
-               } else {
-                       fprintf(stderr, "unknown option\n\n");
-                       exit(1);
+       memset(&ctrl_msg, 0x00, sizeof(struct udevd_ctrl_msg));
+       strcpy(ctrl_msg.magic, UDEVD_CTRL_MAGIC);
+       arg = argv[1];
+
+       if (!strcmp(arg, "stop_exec_queue"))
+               ctrl_msg.type = UDEVD_CTRL_STOP_EXEC_QUEUE;
+       else if (!strcmp(arg, "start_exec_queue"))
+               ctrl_msg.type = UDEVD_CTRL_START_EXEC_QUEUE;
+       else if (!strcmp(arg, "reload_rules"))
+               ctrl_msg.type = UDEVD_CTRL_RELOAD_RULES;
+       else if (!strncmp(arg, "log_priority=", strlen("log_priority="))) {
+               intval = (int *) ctrl_msg.buf;
+               val = &arg[strlen("log_priority=")];
+               ctrl_msg.type = UDEVD_CTRL_SET_LOG_LEVEL;
+               *intval = log_priority(val);
+               info("send log_priority=%i", *intval);
+       } else if (!strncmp(arg, "max_childs=", strlen("max_childs="))) {
+               char *endp;
+               int count;
+
+               intval = (int *) ctrl_msg.buf;
+               val = &arg[strlen("max_childs=")];
+               ctrl_msg.type = UDEVD_CTRL_SET_MAX_CHILDS;
+               count = strtoul(val, &endp, 0);
+               if (endp[0] != '\0' || count < 1) {
+                       fprintf(stderr, "invalid number\n");
+                       goto exit;
                }
+               *intval = count;
+               info("send max_childs=%i", *intval);
+       } else if (!strncmp(arg, "max_childs_running=", strlen("max_childs_running="))) {
+               char *endp;
+               int count;
+
+               intval = (int *) ctrl_msg.buf;
+               val = &arg[strlen("max_childs_running=")];
+               ctrl_msg.type = UDEVD_CTRL_SET_MAX_CHILDS_RUNNING;
+               count = strtoul(val, &endp, 0);
+               if (endp[0] != '\0' || count < 1) {
+                       fprintf(stderr, "invalid number\n");
+                       goto exit;
+               }
+               *intval = count;
+               info("send max_childs_running=%i", *intval);
+       } else if (!strncmp(arg, "env", strlen("env"))) {
+               val = argv[2];
+               if (val == NULL) {
+                       fprintf(stderr, "missing key\n");
+                       goto exit;
+               }
+               ctrl_msg.type = UDEVD_CTRL_ENV;
+               strlcpy(ctrl_msg.buf, val, sizeof(ctrl_msg.buf));
+               info("send env '%s'", val);
+       } else if (strcmp(arg, "help") == 0  || strcmp(arg, "--help") == 0  || strcmp(arg, "-h") == 0) {
+               printf("Usage: udevcontrol COMMAND\n"
+                       "  log_priority=<level>   set the udev log level for the daemon\n"
+                       "  stop_exec_queue        keep udevd from executing events, queue only\n"
+                       "  start_exec_queue       execute events, flush queue\n"
+                       "  reload_rules           reloads the rules files\n"
+                       "  env <var>=<value>      set a global environment variable\n"
+                       "  max_childs=<N>         maximum number of childs\n"
+                       "  max_childs_running=<N> maximum number of childs running at the same time\n"
+                       "  help                   print this help text\n\n");
+               goto exit;
+       } else {
+               fprintf(stderr, "unrecognized command '%s'\n", arg);
+               goto exit;
        }
 
        if (getuid() != 0) {
-               fprintf(stderr, "need to be root, exit\n\n");
-               exit(1);
+               fprintf(stderr, "root privileges required\n");
+               goto exit;
        }
 
        sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
@@ -128,23 +153,20 @@ int main(int argc, char *argv[], char *envp[])
        memset(&saddr, 0x00, sizeof(struct sockaddr_un));
        saddr.sun_family = AF_LOCAL;
        /* use abstract namespace for socket path */
-       strcpy(&saddr.sun_path[1], UDEVD_SOCK_PATH);
+       strcpy(&saddr.sun_path[1], UDEVD_CTRL_SOCK_PATH);
        addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path+1) + 1;
 
-
-       retval = sendto(sock, &usend_msg, sizeof(usend_msg), 0, (struct sockaddr *)&saddr, addrlen);
+       retval = sendto(sock, &ctrl_msg, sizeof(ctrl_msg), 0, (struct sockaddr *)&saddr, addrlen);
        if (retval == -1) {
                err("error sending message: %s", strerror(errno));
                retval = 1;
        } else {
-               dbg("sent message type=0x%02x, %u bytes sent", usend_msg.type, retval);
+               dbg("sent message type=0x%02x, %u bytes sent", ctrl_msg.type, retval);
                retval = 0;
        }
 
        close(sock);
-
 exit:
        logging_close();
-
        return retval;
 }