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/*
FUSE: Filesystem in Userspace
Copyright (C) 2001 Miklos Szeredi (mszeredi@inf.bme.hu)
This program can be distributed under the terms of the GNU LGPL.
See the file COPYING.LIB.
*/
#include "fuse.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <signal.h>
static struct fuse *fuse;
struct fuse *fuse_get(void)
{
return fuse;
}
static void usage(char *progname)
{
fprintf(stderr,
"usage: %s mountpoint [options] [-- [fusermount options]]\n"
"Options:\n"
" -d enable debug output\n"
" -s disable multithreaded operation\n"
" -h print help\n"
"\n"
"Fusermount options:\n"
" see 'fusermount -h'\n",
progname);
exit(1);
}
static void invalid_option(char *argv[], int argctr)
{
fprintf(stderr, "invalid option: %s\n", argv[argctr]);
usage(argv[0]);
}
static void exit_handler()
{
if(fuse != NULL)
fuse_exit(fuse);
}
static void set_signal_handlers()
{
struct sigaction sa;
sa.sa_handler = exit_handler;
sigemptyset(&(sa.sa_mask));
sa.sa_flags = 0;
if (sigaction(SIGHUP, &sa, NULL) == -1 ||
sigaction(SIGINT, &sa, NULL) == -1 ||
sigaction(SIGTERM, &sa, NULL) == -1) {
perror("Cannot set exit signal handlers");
exit(1);
}
sa.sa_handler = SIG_IGN;
if(sigaction(SIGPIPE, &sa, NULL) == -1) {
perror("Cannot set ignored signals");
exit(1);
}
}
void fuse_main(int argc, char *argv[], const struct fuse_operations *op)
{
int argctr;
int flags;
int multithreaded;
int fuse_fd;
char *fuse_mountpoint = NULL;
char **fusermount_args = NULL;
char *newargs[3];
char *basename;
flags = 0;
multithreaded = 1;
for(argctr = 1; argctr < argc && !fusermount_args; argctr ++) {
if(argv[argctr][0] == '-') {
if(strlen(argv[argctr]) == 2)
switch(argv[argctr][1]) {
case 'd':
flags |= FUSE_DEBUG;
break;
case 's':
multithreaded = 0;
break;
case 'h':
usage(argv[0]);
break;
case '-':
fusermount_args = &argv[argctr+1];
break;
default:
invalid_option(argv, argctr);
}
else
invalid_option(argv, argctr);
} else if(fuse_mountpoint == NULL)
fuse_mountpoint = strdup(argv[argctr]);
else
invalid_option(argv, argctr);
}
if(fuse_mountpoint == NULL) {
fprintf(stderr, "missing mountpoint\n");
usage(argv[0]);
}
if(fusermount_args != NULL)
fusermount_args -= 2; /* Hack! */
else {
fusermount_args = newargs;
fusermount_args[2] = NULL;
}
basename = strrchr(argv[0], '/');
if(basename == NULL)
basename = argv[0];
else if(basename[1] != '\0')
basename++;
fusermount_args[0] = "-n";
fusermount_args[1] = basename;
fuse_fd = fuse_mount(fuse_mountpoint, (const char **) fusermount_args);
if(fuse_fd == -1)
exit(1);
set_signal_handlers();
fuse = fuse_new(fuse_fd, flags, op);
if(fuse == NULL)
exit(1);
if(multithreaded)
fuse_loop_mt(fuse);
else
fuse_loop(fuse);
close(fuse_fd);
fuse_unmount(fuse_mountpoint);
}
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