forked from KolibriOS/umka
129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*
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Kofuse: KolibriOS kernel FS code as FUSE in Linux
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Copyright (C) 2018 Ivan Baravy <dunkaist@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#define FUSE_USE_VERSION 31
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#include <fuse.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <time.h>
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#include <assert.h>
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#include "kolibri.h"
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#define DIRENTS_TO_READ 100
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static void bdfe_to_stat(struct bdfe *kf, struct stat *st) {
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if (kf->attr & KF_FOLDER) {
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st->st_mode = S_IFDIR | 0755;
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st->st_nlink = 2;
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} else {
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st->st_mode = S_IFREG | 0644;
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st->st_nlink = 1;
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st->st_size = kf->size;
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}
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st->st_atim = (struct timespec){ .tv_sec = kos_time_to_epoch(&(kf->atime)) };
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st->st_mtim = (struct timespec){ .tv_sec = kos_time_to_epoch(&(kf->mtime)) };
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st->st_ctim = (struct timespec){ .tv_sec = kos_time_to_epoch(&(kf->ctime)) };
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}
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static void *kofuse_init(struct fuse_conn_info *conn,
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struct fuse_config *cfg) {
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(void) conn;
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cfg->kernel_cache = 1;
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return NULL;
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}
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static int kofuse_getattr(const char *path, struct stat *stbuf,
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struct fuse_file_info *fi) {
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(void) fi;
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int res = 0;
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struct bdfe file;
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struct f70s5arg f70 = {5, 0, 0, 0, &file, 0, path};
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f70ret r;
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kos_fuse_lfn(&f70, &r);
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bdfe_to_stat(&file, stbuf);
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// res = -ENOENT;
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return res;
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}
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static int kofuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
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off_t offset, struct fuse_file_info *fi,
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enum fuse_readdir_flags flags) {
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(void) offset; // TODO
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(void) fi;
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(void) flags;
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struct f70s1ret *dir = (struct f70s1ret*)malloc(sizeof(struct f70s1ret) + sizeof(struct bdfe) * DIRENTS_TO_READ);
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struct f70s1arg f70 = {1, 0, CP866, DIRENTS_TO_READ, dir, 0, path};
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f70ret r;
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kos_fuse_lfn(&f70, &r);
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for (size_t i = 0; i < dir->cnt; i++) {
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filler(buf, dir->bdfes[i].name, NULL, 0, 0);
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}
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free(dir);
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return 0;
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}
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static int kofuse_open(const char *path, struct fuse_file_info *fi) {
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// if (strcmp(path+1, "blah") != 0)
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// return -ENOENT;
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(void) path;
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if ((fi->flags & O_ACCMODE) != O_RDONLY)
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return -EACCES;
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return 0;
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}
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static int kofuse_read(const char *path, char *buf, size_t size, off_t offset,
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struct fuse_file_info *fi) {
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(void) fi;
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struct f70s5arg f70 = {0, offset, offset >> 32, size, buf, 0, path};
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f70ret r;
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kos_fuse_lfn(&f70, &r);
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return size;
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}
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static struct fuse_operations kofuse_oper = {
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.init = kofuse_init,
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.getattr = kofuse_getattr,
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.readdir = kofuse_readdir,
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.open = kofuse_open,
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.read = kofuse_read,
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};
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int main(int argc, char *argv[]) {
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if (argc != 3) {
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printf("usage: kofuse dir img\n");
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exit(1);
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}
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int fd = open(argv[2], O_RDONLY);
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struct stat st;
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fstat(fd, &st);
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kos_fuse_init(fd, st.st_size / 512, 512);
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return fuse_main(argc-1, argv, &kofuse_oper, NULL);
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}
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