unsigned int arg_length = 128;
unsigned int mountflags = MS_NODEV | MS_NOSUID;
+FILE *logfd;
+
void receive_argument(int control_channel_fd, char *source) {
int received;
received=recv(control_channel_fd, source, arg_length, 0);
if (received<arg_length) {
- printf("Error receiving arguments over the control buffer\n");
+ fprintf(logfd,"Error receiving arguments over the control buffer\n");
+ close(logfd);
exit(1);
}
}
-int get_magic_fd (char *data) {
+int set_magic_fd (char *data, int new_fd) {
char *ptr;
int fd;
return -1;
if (*(ptr+3)!='\0') {
+ char *new_data = (char *) malloc(arg_length);
+ char *head = (char *) malloc(arg_length);
+ char *tail;
sscanf(ptr+3,"%d",&fd);
+ strncpy(head, data, ptr - data);
+ tail = strchr(ptr+3,',');
+ sprintf(new_data,"%sfd=%d%s",head,new_fd,tail);
+ strcpy(data,new_data);
+ free(head);
+ free(new_data);
return fd;
}
else
void check_source(char *source) {
source[arg_length-1]='\0';
if (strchr(source,'/') || strstr(source,"..")) {
- printf("Tried mounting with source = %s\n", source);
+ fprintf(logfd, "Tried mounting with source = %s\n", source);
+ close(logfd);
exit(1);
}
}
void check_target(char *target) {
- source[arg_length-1]='\0';
- if (strstr(source,"..")) {
- printf("Tried mounting with target = %s\n", target);
+ target[arg_length-1]='\0';
+ if (strstr(target,"..")) {
+ fprintf(logfd,"Tried mounting with target = %s\n", target);
+ close(logfd);
exit(1);
}
}
void check_fstype(char *filesystemtype) {
if (strncmp(filesystemtype,"fuse",4)) {
- printf("Tried mounting filesystem type %s\n", filesystemtype);
+ fprintf(logfd,"Tried mounting filesystem type %s\n", filesystemtype);
+ close(logfd);
+ exit(1);
}
}
int main(int argc, char *argv[]) {
int control_channel_fd, magic_fd, mount_fd;
- char source[128],target[128],filesystemtype[128],data[128],slice_target[256];
+ char source[128],target[128],filesystemtype[128],data[128],slice_target[1024];
int received;
}
char *slice_name = argv[1];
+
+ logfd=fopen("/tmp/fuselog","w");
+ if (!logfd) {logfd = stderr;}
sscanf(argv[2],"%d", &control_channel_fd);
receive_argument(control_channel_fd, target);
receive_argument(control_channel_fd, filesystemtype);
receive_argument(control_channel_fd, data);
-
- magic_fd = get_magic_fd (data);
-
- if (magic_fd < 3) {
- printf("Got fd %d in fusemount\n",magic_fd);
- exit(1);
- }
mount_fd = receive_fd (control_channel_fd);
- if (mount_fd != magic_fd) {
- printf("mount_fd (%d) != magic_fd (%d)\n", mount_fd, magic_fd);
+ if (mount_fd < 2) {
+ printf("mount_fd = %d\n", mount_fd);
exit(1);
}
+ set_magic_fd(data, mount_fd);
+
+
check_source(source);
check_target(target);
check_fstype(filesystemtype);
- sprintf(slice_target,"/vservers/%s/%s", target);
+ sprintf(slice_target,"/vservers/%s/%s", slice_name, target);
+
+ fprintf(logfd, "Mount fd: %d Source: %s slice_target: %s fstype: %s mountflags: %d data: %s\n", mount_fd, source, slice_target, filesystemtype, mountflags, data);
if (!mount(source, slice_target, filesystemtype, mountflags, data)) {
- send_fd(control_channel_fd, magic_fd);
+ send_fd(control_channel_fd, mount_fd);
+ }
+ else {
+ printf ("Error executing mount\n");
+ exit(1);
}
+ close(logfd);
+ return 0;
}