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#include <fuse.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#include <signal.h>
static struct fuse *pro_fuse;
static int pro_getattr(const char *path, struct stat *stbuf)
{
int res;
res = lstat(path, stbuf);
if(res == -1)
return -errno;
return 0;
}
static int pro_readlink(const char *path, char *buf, size_t size)
{
int res;
res = readlink(path, buf, size - 1);
if(res == -1)
return -errno;
buf[res] = '\0';
return 0;
}
static int pro_getdir(const char *path, struct fuse_dh *h, dirfiller_t filler)
{
DIR *dp;
struct dirent *de;
int res;
dp = opendir(path);
if(dp == NULL)
return -errno;
while((de = readdir(dp)) != NULL) {
res = filler(h, de->d_name, de->d_type);
if(res != 0)
break;
}
closedir(dp);
return res;
}
static int pro_mknod(const char *path, int mode, int rdev)
{
int res;
res = mknod(path, mode, rdev);
if(res == -1)
return -errno;
return 0;
}
static int pro_symlink(const char *from, const char *to)
{
int res;
res = symlink(from, to);
if(res == -1)
return -errno;
return 0;
}
static int pro_mkdir(const char *path, int mode)
{
int res;
res = mkdir(path, mode);
if(res == -1)
return -errno;
return 0;
}
static int pro_unlink(const char *path)
{
int res;
res = unlink(path);
if(res == -1)
return -errno;
return 0;
}
static int pro_rmdir(const char *path)
{
int res;
res = rmdir(path);
if(res == -1)
return -errno;
return 0;
}
static void exit_handler()
{
exit(0);
}
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);
}
}
static void cleanup()
{
fuse_unmount(pro_fuse);
fuse_destroy(pro_fuse);
}
static struct fuse_operations pro_oper = {
getattr: pro_getattr,
readlink: pro_readlink,
getdir: pro_getdir,
mknod: pro_mknod,
mkdir: pro_mkdir,
symlink: pro_symlink,
unlink: pro_unlink,
rmdir: pro_rmdir,
};
int main(int argc, char *argv[])
{
if(argc != 2) {
fprintf(stderr, "usage: %s mount_dir\n", argv[0]);
exit(1);
}
set_signal_handlers();
atexit(cleanup);
pro_fuse = fuse_new();
fuse_mount(pro_fuse, argv[1]);
fuse_set_operations(pro_fuse, &pro_oper);
fuse_loop(pro_fuse);
return 0;
}
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