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/**
* Copyright (c) 2021, Marvin Borner <melvix@marvinborner.de>
* SPDX-License-Identifier: MIT
*/
#define FUSE_USE_VERSION 30
#include <spec.h>
#include <errno.h>
#include <fuse.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <time.h>
static char *image = 0;
static void marfs_debug(const char *fmt, ...)
{
printf("\t>>> ");
va_list args;
va_start(args, fmt);
vfprintf(stdout, fmt, args);
va_end(args);
printf("\n");
}
static void *marfs_init(struct fuse_conn_info *conn, struct fuse_config *cfg)
{
marfs_debug("init()");
UNUSED(conn);
cfg->kernel_cache = 1;
return NULL;
}
static void marfs_destroy(void *data)
{
marfs_debug("destroy()");
if (image)
free(image);
}
static int marfs_open(const char *file_path, struct fuse_file_info *file_info)
{
marfs_debug("open() on %s", file_path);
return 0;
}
static int marfs_opendir(const char *dir_path, struct fuse_file_info *file_info)
{
marfs_debug("opendir() on %s", dir_path);
return 0;
}
static int marfs_getattr(const char *path, struct stat *stat, struct fuse_file_info *info)
{
marfs_debug("getattr() on %s", path);
UNUSED(info);
memset(stat, 0, sizeof(*stat));
if (strcmp(path, "/") == 0) {
stat->st_mode = S_IFDIR | 0000;
} else if (strcmp(path + 1, "aah") == 0) {
stat->st_mode = S_IFREG | 0000;
stat->st_size = 0;
} else {
return -ENOENT;
}
return 0;
}
static int marfs_readdir(const char *path, void *buf, fuse_fill_dir_t fill, off_t offset,
struct fuse_file_info *file_info, enum fuse_readdir_flags flags)
{
marfs_debug("readdir() on %s and offset %lu", path, offset);
UNUSED(offset);
UNUSED(file_info);
UNUSED(flags);
if (strcmp(path, "/") != 0)
return -ENOENT;
fill(buf, ".", NULL, 0, 0);
fill(buf, "..", NULL, 0, 0);
fill(buf, "aah", NULL, 0, 0);
return 0;
}
static int marfs_release(const char *path, struct fuse_file_info *file_info)
{
marfs_debug("release() on %s", path);
return 0;
}
static int marfs_releasedir(const char *path, struct fuse_file_info *file_info)
{
marfs_debug("releasedir() on %s", path);
return 0;
}
static int marfs_read(const char *path, char *buf, size_t to_read, off_t offset,
struct fuse_file_info *file_info)
{
marfs_debug("read() on %s, %lu", path, to_read);
return to_read;
}
static int marfs_write(const char *path, const char *buf, size_t to_write, off_t offset,
struct fuse_file_info *file_info)
{
marfs_debug("write() on %s", path);
return to_write;
}
static int marfs_create(const char *path, mode_t mode, struct fuse_file_info *file_info)
{
marfs_debug("create() on %s", path);
return 0;
}
static int marfs_mkdir(const char *path, mode_t mode)
{
marfs_debug("mkdir() on %s", path);
return 0;
}
static int marfs_unlink(const char *path)
{
marfs_debug("unlink() on %s", path);
return 0;
}
static int marfs_rmdir(const char *path)
{
marfs_debug("rmdir() on %s", path);
return 0;
}
static int marfs_utimens(const char *path, const struct timespec tv[2],
struct fuse_file_info *file_info)
{
marfs_debug("utimens() on %s", path);
return 0;
}
static int marfs_truncate(const char *path, off_t size, struct fuse_file_info *file_info)
{
marfs_debug("truncate() on %s, size %lu", path, size);
return 0;
}
static int marfs_rename(const char *path, const char *new, unsigned int flags)
{
marfs_debug("rename() on %s -> %s", path, new);
return 0;
}
static struct fuse_operations operations = {
.init = marfs_init,
.destroy = marfs_destroy,
.open = marfs_open,
.opendir = marfs_opendir,
.getattr = marfs_getattr,
.readdir = marfs_readdir,
.release = marfs_release,
.releasedir = marfs_releasedir,
.read = marfs_read,
.write = marfs_write,
.create = marfs_create,
.unlink = marfs_unlink,
.utimens = marfs_utimens,
.truncate = marfs_truncate,
.mkdir = marfs_mkdir,
.rmdir = marfs_rmdir,
.rename = marfs_rename,
};
int main(int argc, char **argv)
{
if (argc < 2) {
fprintf(stderr, "error: no image specified\n");
exit(1);
}
// I don't think that's how fuse is supposed to work but idc
image = strdup(argv[1]);
argv++;
argc--;
fuse_main(argc, argv, &operations, NULL);
return 0;
}
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