static void hal_property_modified(LibHalContext *ctx, const char *udi,
const char *key, dbus_bool_t is_removed, dbus_bool_t is_added)
{
if (!strcmp(key, "volume.is_mounted")) {
if (libhal_device_get_property_bool(ctx, udi, "volume.is_mounted", NULL)) {
char *mountpoint = libhal_device_get_property_string(
ctx, udi, "volume.mount_point", NULL);
if (!strncmp(MEDIA_DIR, mountpoint, strlen(MEDIA_DIR))) {
add_mount(udi, mountpoint);
}
if (mountpoint)
libhal_free_string(mountpoint);
} else {
remove_mount(udi);
}
update_status();
}
}
int main(int argc, char *argv[])
{
int a;
int fd;
int res;
char *origmnt;
char *mnt;
int unmount = 0;
char **userprog;
int numargs;
char mypath[PATH_MAX];
char *unmount_cmd;
char *commfd;
char verstr[128];
int flags = 0;
progname = argv[0];
for(a = 1; a < argc; a++) {
if(argv[a][0] != '-')
break;
switch(argv[a][1]) {
case 'c':
flags |= FUSE_KERNEL_CACHE;
break;
case 'h':
usage();
break;
case 'u':
unmount = 1;
break;
case 'p':
flags |= FUSE_DEFAULT_PERMISSIONS;
break;
case 'x':
if(getuid() != 0) {
fprintf(stderr, "%s: option %s is allowed only for root\n",
progname, argv[a]);
exit(1);
}
flags |= FUSE_ALLOW_OTHER;
break;
default:
fprintf(stderr, "%s: Unknown option %s\n", progname, argv[a]);
exit(1);
}
}
if(a == argc) {
fprintf(stderr, "%s: Missing mountpoint argument\n", progname);
exit(1);
}
origmnt = argv[a++];
if(getpid() != 0)
drop_privs();
mnt = resolve_path(origmnt, unmount);
if(mnt == NULL)
exit(1);
if(getpid() != 0)
restore_privs();
if(unmount) {
res = remove_mount(mnt);
if(res == -1)
exit(1);
return 0;
}
commfd = getenv(FUSE_COMMFD_ENV);
if(a == argc && commfd == NULL) {
fprintf(stderr, "%s: Missing program argument\n", progname);
exit(1);
}
userprog = argv + a;
numargs = argc - a;
fd = mount_fuse(mnt, flags);
if(fd == -1)
exit(1);
if(commfd != NULL) {
int cfd = atoi(commfd);
res = send_fd(cfd, fd);
if(res == -1)
exit(1);
exit(0);
}
/* Dup the file descriptor to stdin */
if(fd != 0) {
dup2(fd, 0);
close(fd);
}
/* Strangely this doesn't work after dropping permissions... */
res = readlink("/proc/self/exe", mypath, sizeof(mypath) - 1);
if(res == -1) {
fprintf(stderr, "%s: failed to determine self path: %s\n",
progname, strerror(errno));
strcpy(mypath, "fusermount");
fprintf(stderr, "using %s as the default\n", mypath);
}
else
mypath[res] = '\0';
/* Drop setuid/setgid permissions */
setuid(getuid());
setgid(getgid());
unmount_cmd = (char *) malloc(strlen(mypath) + strlen(mnt) + 64);
sprintf(unmount_cmd, "%s -u %s", mypath, mnt);
setenv(FUSE_UMOUNT_CMD_ENV, unmount_cmd, 1);
sprintf(verstr, "%i", FUSE_KERNEL_VERSION);
setenv(FUSE_KERNEL_VERSION_ENV, verstr, 1);
setenv(FUSE_MOUNTED_ENV, "", 1);
execvp(userprog[0], userprog);
fprintf(stderr, "%s: failed to exec %s: %s\n", progname, userprog[0],
strerror(errno));
close(0);
system(unmount_cmd);
return 1;
}
