Пример #1
0
int fuser_main(int argc UNUSED_PARAM, char **argv)
{
	pid_list *plist;
	inode_list *ilist;
	char **pp;
	dev_t dev;
	ino_t inode;
	unsigned port;
	int opt;
	int success;
	int killsig;
/*
fuser [options] FILEs or PORT/PROTOs
Find processes which use FILEs or PORTs
        -m      Find processes which use same fs as FILEs
        -4      Search only IPv4 space
        -6      Search only IPv6 space
        -s      Silent: just exit with 0 if any processes are found
        -k      Kill found processes (otherwise display PIDs)
        -SIGNAL Signal to send (default: TERM)
*/
	/* Handle -SIGNAL. Oh my... */
	killsig = SIGTERM;
	pp = argv;
	while (*++pp) {
		char *arg = *pp;
		if (arg[0] != '-')
			continue;
		if (arg[1] == '-' && arg[2] == '\0') /* "--" */
			break;
		if ((arg[1] == '4' || arg[1] == '6') && arg[2] == '\0')
			continue; /* it's "-4" or "-6" */
		opt = get_signum(&arg[1]);
		if (opt < 0)
			continue;
		/* "-SIGNAL" option found. Remove it and bail out */
		killsig = opt;
		do {
			pp[0] = arg = pp[1];
			pp++;
		} while (arg);
		break;
	}

	opt = getopt32(argv, OPTION_STRING);
	argv += optind;

	ilist = NULL;
	pp = argv;
	while (*pp) {
		char *proto = parse_net_arg(*pp, &port);
		if (proto) { /* PORT/PROTO */
			ilist = scan_proc_net(proto, port, ilist);
			free(proto);
		} else { /* FILE */
			if (!file_to_dev_inode(*pp, &dev, &inode))
				bb_perror_msg_and_die("can't open %s", *pp);
			ilist = add_inode(ilist, dev, inode);
		}
		pp++;
	}

	plist = scan_proc_pids(ilist); /* changes dir to "/proc" */

	if (!plist)
		return EXIT_FAILURE;
	success = 1;
	if (opt & OPT_KILL) {
		success = kill_pid_list(plist, killsig);
	} else if (!(opt & OPT_SILENT)) {
		success = print_pid_list(plist);
	}
	return (success != 1); /* 0 == success */
}
Пример #2
0
int fuser_main(int argc UNUSED_PARAM, char **argv)
{
	pid_list *plist;
	pid_t mypid;
	char **pp;
	struct stat st;
	unsigned port;
	int opt;
	int exitcode;
	int killsig;
/*
fuser [OPTIONS] FILE or PORT/PROTO
Find processes which use FILEs or PORTs
        -m      Find processes which use same fs as FILEs
        -4      Search only IPv4 space
        -6      Search only IPv6 space
        -s      Don't display PIDs
        -k      Kill found processes
        -SIGNAL Signal to send (default: KILL)
*/
	/* Handle -SIGNAL. Oh my... */
	killsig = SIGKILL; /* yes, the default is not SIGTERM */
	pp = argv;
	while (*++pp) {
		char *arg = *pp;
		if (arg[0] != '-')
			continue;
		if (arg[1] == '-' && arg[2] == '\0') /* "--" */
			break;
		if ((arg[1] == '4' || arg[1] == '6') && arg[2] == '\0')
			continue; /* it's "-4" or "-6" */
		opt = get_signum(&arg[1]);
		if (opt < 0)
			continue;
		/* "-SIGNAL" option found. Remove it and bail out */
		killsig = opt;
		do {
			pp[0] = arg = pp[1];
			pp++;
		} while (arg);
		break;
	}

	opt_complementary = "-1"; /* at least one param */
	opt = getopt32(argv, OPTION_STRING);
	argv += optind;

	pp = argv;
	while (*pp) {
		/* parse net arg */
		char path[20], tproto[5];
		if (sscanf(*pp, "%u/%4s", &port, tproto) != 2)
			goto file;
		sprintf(path, "/proc/net/%s", tproto);
		if (access(path, R_OK) != 0) { /* PORT/PROTO */
			scan_proc_net(path, port);
		} else { /* FILE */
 file:
			xstat(*pp, &st);
			add_inode(&st);
		}
		pp++;
	}

	scan_proc_pids(); /* changes dir to "/proc" */

	mypid = getpid();
	plist = G.pid_list_head;
	while (1) {
		if (!plist)
			return EXIT_FAILURE;
		if (plist->pid != mypid)
			break;
		plist = plist->next;
	}

	exitcode = EXIT_SUCCESS;
	do {
		if (plist->pid != mypid) {
			if (opt & OPT_KILL) {
				if (kill(plist->pid, killsig) != 0) {
					bb_perror_msg("kill pid %u", (unsigned)plist->pid);
					exitcode = EXIT_FAILURE;
				}
			}
			if (!(opt & OPT_SILENT)) {
				printf("%u ", (unsigned)plist->pid);
			}
		}
		plist = plist->next;
	} while (plist);

	if (!(opt & (OPT_SILENT))) {
		bb_putchar('\n');
	}

	return exitcode;
}