The new service command managed to escape.
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14b7a72ba3
commit
ae92cc208d
1 changed files with 74 additions and 47 deletions
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@ -9,6 +9,7 @@
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <minix/config.h>
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#include <minix/com.h>
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#include <minix/const.h>
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@ -39,11 +40,13 @@ extern int errno;
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* argument pairs like "-args arglist" follow.
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*/
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#define ARG_NAME 0 /* own application name */
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#define ARG_REQUEST 1 /* request to perform */
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#define ARG_PATH 2 /* rescue dir or system service */
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#define ARG_PID 2 /* pid of system service */
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#define MIN_ARG_COUNT 2 /* require an action */
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/* The following are relative to optind */
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#define ARG_REQUEST 0 /* request to perform */
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#define ARG_PATH 1 /* rescue dir or system service */
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#define ARG_PID 1 /* pid of system service */
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#define MIN_ARG_COUNT 1 /* require an action */
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#define ARG_ARGS "-args" /* list of arguments to be passed */
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#define ARG_DEV "-dev" /* major device number for drivers */
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@ -71,7 +74,7 @@ PRIVATE void print_usage(char *app_name, char *problem)
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{
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printf("Warning, %s\n", problem);
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printf("Usage:\n");
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printf(" %s up <binary> [%s <args>] [%s <special>] [%s <ticks>]\n",
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printf(" %s [-c] up <binary> [%s <args>] [%s <special>] [%s <ticks>]\n",
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app_name, ARG_ARGS, ARG_DEV, ARG_PERIOD);
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printf(" %s down <pid>\n", app_name);
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printf(" %s refresh <pid>\n", app_name);
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@ -84,7 +87,7 @@ PRIVATE void print_usage(char *app_name, char *problem)
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*/
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PRIVATE void failure(int num)
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{
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printf("Request to RS failed: %s (%d)\n", strerror(num), num);
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printf("Request to RS failed: %s (error %d)\n", strerror(num), num);
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exit(num);
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}
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@ -92,41 +95,63 @@ PRIVATE void failure(int num)
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/* Parse and verify correctness of arguments. Report problem and exit if an
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* error is found. Store needed parameters in global variables.
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*/
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PRIVATE int parse_arguments(int argc, char **argv)
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PRIVATE int parse_arguments(int argcX, char **argvX)
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{
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struct stat stat_buf;
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char *hz;
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int req_nr;
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int i;
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int c, i;
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int c_flag;
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c_flag= 0;
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while (c= getopt(argcX, argvX, "c?"), c != -1)
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{
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switch(c)
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{
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case '?':
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print_usage(argvX[ARG_NAME], "wrong number of arguments");
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exit(EINVAL);
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case 'c':
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c_flag= 1;
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break;
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default:
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fprintf(stderr, "%s: getopt failed: %c\n",
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argvX[ARG_NAME], c);
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exit(1);
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}
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}
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/* Verify argument count. */
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if (argc < MIN_ARG_COUNT) {
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print_usage(argv[ARG_NAME], "wrong number of arguments");
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if (argcX < optind+MIN_ARG_COUNT) {
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print_usage(argvX[ARG_NAME], "wrong number of arguments");
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exit(EINVAL);
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}
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/* Verify request type. */
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for (req_type=0; req_type< ILLEGAL_REQUEST; req_type++) {
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if (strcmp(known_requests[req_type],argv[ARG_REQUEST])==0) break;
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if (strcmp(known_requests[req_type],argvX[optind+ARG_REQUEST])==0) break;
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}
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if (req_type == ILLEGAL_REQUEST) {
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print_usage(argv[ARG_NAME], "illegal request type");
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print_usage(argvX[ARG_NAME], "illegal request type");
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exit(ENOSYS);
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}
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req_nr = RS_RQ_BASE + req_type;
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if (req_nr == RS_UP) {
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if (c_flag)
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req_nr= RS_UP_COPY;
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/* Verify argument count. */
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if (argc - 1 < ARG_PATH) {
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print_usage(argv[ARG_NAME], "action requires a binary to start");
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if (argcX - 1 < optind+ARG_PATH) {
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print_usage(argvX[ARG_NAME], "action requires a binary to start");
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exit(EINVAL);
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}
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/* Verify the name of the binary of the system service. */
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req_path = argv[ARG_PATH];
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req_path = argvX[optind+ARG_PATH];
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if (req_path[0] != '/') {
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print_usage(argv[ARG_NAME], "binary should be absolute path");
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print_usage(argvX[ARG_NAME], "binary should be absolute path");
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exit(EINVAL);
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}
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if (stat(req_path, &stat_buf) == -1) {
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@ -135,43 +160,44 @@ PRIVATE int parse_arguments(int argc, char **argv)
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exit(errno);
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}
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if (! (stat_buf.st_mode & S_IFREG)) {
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print_usage(argv[ARG_NAME], "binary is not a regular file");
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print_usage(argvX[ARG_NAME], "binary is not a regular file");
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exit(EINVAL);
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}
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/* Check optional arguments that come in pairs like "-args arglist". */
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for (i=MIN_ARG_COUNT+1; i<argc; i=i+2) {
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if (! (i+1 < argc)) {
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print_usage(argv[ARG_NAME], "optional argument not complete");
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for (i=optind+MIN_ARG_COUNT+1; i<argcX; i=i+2) {
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if (! (i+1 < argcX)) {
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print_usage(argvX[ARG_NAME], "optional argument not complete");
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exit(EINVAL);
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}
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if (strcmp(argv[i], ARG_ARGS)==0) {
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req_args = argv[i+1];
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if (strcmp(argvX[i], ARG_ARGS)==0) {
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req_args = argvX[i+1];
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}
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else if (strcmp(argv[i], ARG_PERIOD)==0) {
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req_period = strtol(argv[i+1], &hz, 10);
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else if (strcmp(argvX[i], ARG_PERIOD)==0) {
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req_period = strtol(argvX[i+1], &hz, 10);
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if (strcmp(hz,"HZ")==0) req_period *= HZ;
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if (req_period < 1) {
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print_usage(argv[ARG_NAME], "period is at least be one tick");
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print_usage(argvX[ARG_NAME],
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"period is at least be one tick");
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exit(EINVAL);
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}
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}
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else if (strcmp(argv[i], ARG_DEV)==0) {
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if (stat(argv[i+1], &stat_buf) == -1) {
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print_usage(argv[ARG_NAME], "couldn't get status of device");
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else if (strcmp(argvX[i], ARG_DEV)==0) {
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if (stat(argvX[i+1], &stat_buf) == -1) {
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print_usage(argvX[ARG_NAME], "couldn't get status of device");
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exit(errno);
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}
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if ( ! (stat_buf.st_mode & (S_IFBLK | S_IFCHR))) {
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print_usage(argv[ARG_NAME], "special file is not a device");
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print_usage(argvX[ARG_NAME], "special file is not a device");
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exit(EINVAL);
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}
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req_major = (stat_buf.st_rdev >> MAJOR) & BYTE;
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}
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else if (strcmp(argv[i], ARG_ARGS)==0) {
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req_priv = argv[i+1];
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else if (strcmp(argvX[i], ARG_ARGS)==0) {
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req_priv = argvX[i+1];
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}
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else {
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print_usage(argv[ARG_NAME], "unknown optional argument given");
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print_usage(argvX[ARG_NAME], "unknown optional argument given");
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exit(EINVAL);
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}
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}
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@ -179,33 +205,33 @@ PRIVATE int parse_arguments(int argc, char **argv)
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else if (req_nr == RS_DOWN || req_nr == RS_REFRESH) {
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/* Verify argument count. */
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if (argc - 1 < ARG_PID) {
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print_usage(argv[ARG_NAME], "action requires a pid to stop");
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if (argcX - 1 < optind+ARG_PID) {
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print_usage(argvX[ARG_NAME], "action requires a pid to stop");
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exit(EINVAL);
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}
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if (! (req_pid = atoi(argv[ARG_PID])) > 0) {
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print_usage(argv[ARG_NAME], "pid must be greater than zero");
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if (! (req_pid = atoi(argvX[optind+ARG_PID])) > 0) {
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print_usage(argvX[ARG_NAME], "pid must be greater than zero");
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exit(EINVAL);
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}
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}
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else if (req_nr == RS_RESCUE) {
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/* Verify argument count. */
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if (argc - 1 < ARG_PATH) {
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print_usage(argv[ARG_NAME], "action requires rescue directory");
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if (argcX - 1 < optind+ARG_PATH) {
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print_usage(argvX[ARG_NAME], "action requires rescue directory");
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exit(EINVAL);
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}
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req_path = argv[ARG_PATH];
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req_path = argvX[optind+ARG_PATH];
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if (req_path[0] != '/') {
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print_usage(argv[ARG_NAME], "rescue dir should be absolute path");
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print_usage(argvX[ARG_NAME], "rescue dir should be absolute path");
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exit(EINVAL);
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}
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if (stat(argv[ARG_PATH], &stat_buf) == -1) {
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print_usage(argv[ARG_NAME], "couldn't get status of directory");
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if (stat(argvX[optind+ARG_PATH], &stat_buf) == -1) {
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print_usage(argvX[ARG_NAME], "couldn't get status of directory");
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exit(errno);
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}
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if ( ! (stat_buf.st_mode & S_IFDIR)) {
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print_usage(argv[ARG_NAME], "file is not a directory");
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print_usage(argvX[ARG_NAME], "file is not a directory");
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exit(EINVAL);
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}
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}
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@ -239,6 +265,7 @@ PUBLIC int main(int argc, char **argv)
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*/
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switch(request) {
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case RS_UP:
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case RS_UP_COPY:
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/* Build space-separated command string to be passed to RS server. */
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strcpy(command, req_path);
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command[strlen(req_path)] = ' ';
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@ -250,24 +277,24 @@ PUBLIC int main(int argc, char **argv)
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m.RS_DEV_MAJOR = req_major;
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m.RS_PERIOD = req_period;
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if (OK != (s=_taskcall(RS_PROC_NR, request, &m)))
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failure(s);
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failure(-s);
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result = m.m_type;
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break;
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case RS_DOWN:
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case RS_REFRESH:
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m.RS_PID = req_pid;
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if (OK != (s=_taskcall(RS_PROC_NR, request, &m)))
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failure(s);
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failure(-s);
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break;
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case RS_RESCUE:
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m.RS_CMD_ADDR = req_path;
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m.RS_CMD_LEN = strlen(req_path);
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if (OK != (s=_taskcall(RS_PROC_NR, request, &m)))
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failure(s);
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failure(-s);
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break;
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case RS_SHUTDOWN:
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if (OK != (s=_taskcall(RS_PROC_NR, request, &m)))
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failure(s);
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failure(-s);
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break;
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default:
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print_usage(argv[ARG_NAME], "request is not yet supported");
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