95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/*
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* The Qubes OS Project, http://www.qubes-os.org
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*
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* Copyright (C) 2010 Rafal Wojtczuk <rafal@invisiblethingslab.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <xs.h>
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void check_name(unsigned char *s)
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{
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int c;
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for (; *s; s++) {
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c = *s;
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if (c >= 'a' && c <= 'z')
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continue;
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if (c >= 'A' && c <= 'Z')
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continue;
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if (c == '_' || c == '-')
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continue;
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if (c >= '0' && c <= '9')
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continue;
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fprintf(stderr, "invalid string %s\n", s);
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exit(1);
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}
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}
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/*
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A tool to request action from qfileexchgd by writing to device/qpen xenstore key.
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new - please attach a vfat-formatted block device at /dev/xvdg; I will either write some files to it and
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then request sending it to other AppVM, or I will place dvm_header+some file on it and send it to DVM
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send vmname - detach my /dev/xvdg and attach it to vmname at /dev/xvdh
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umount - I am done with my /dev/xvdh, please detach it
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*/
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void usage(char *argv0)
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{
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fprintf(stderr, "usage: %s [new|umount]\n"
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"%s send vmname [seq]\n", argv0, argv0);
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exit(1);
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}
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int main(int argc, char **argv)
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{
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char buf[256];
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struct xs_handle *xs;
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xs = xs_domain_open();
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setuid(getuid());
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if (!xs) {
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perror("xs_domain_open");
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exit(1);
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}
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switch (argc) {
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case 2:
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if (!strcmp(argv[1], "umount"))
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strcpy(buf, "umount");
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else
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strcpy(buf, "new");
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break;
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case 3:
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check_name((unsigned char *) argv[2]);
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snprintf(buf, sizeof(buf), "send %s", argv[2]);
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break;
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case 4:
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check_name((unsigned char *) argv[2]);
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check_name((unsigned char *) argv[3]);
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snprintf(buf, sizeof(buf), "send %s %s", argv[2], argv[3]);
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default:
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usage(argv[0]);
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}
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if (!xs_write(xs, 0, "device/qpen", buf, strlen(buf))) {
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perror("xs_write");
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exit(1);
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}
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xs_daemon_close(xs);
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return 0;
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}
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