Adventure Time

Yap, ane kembali lagi untuk memberikan tutorial sederhana namun cukup membuat kepala anda fusing. Fuse, kita bakal belajar fuse, yaitu cara untuk memount suatu folder di linux. Tapi, biar sedikit berwarna wkwkwk ane tambahin dikit dimana kita ngemount dan file didalamnya bakal ke backup jadi file berformat .bak. langsung aja deh kita ke tutorialnya.

pertama kalian instal fuse terlebih dahulu
1. Download FUSE dari http://fuse.sourceforge.net/ pada bagian Download stable release
2. Extract file tar.gz dan masuk ke direktori FUSE. (tar –xvzf fuse-2.9.4.tar.gz)
3. Lakukan installasi FUSE dengan cara :
             a. Gunakan hak akses super user (sudo su)
             b. Ketikkan perintah ./configure
             c. Ketikkan perintah make
             d. Ketikkan perintah make install
4. FUSE siap digunakan

lalu kalian ketikan program berikut :

#define FUSE_USE_VERSION 26 #ifdef HAVE_CONFIG_H #include <config.h> #endif #ifdef linux /* For pread()/pwrite()/utimensat() */ #define _XOPEN_SOURCE 700 #endif #include <fuse.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <sys/stat.h> #include <dirent.h> #include <errno.h> #include <sys/time.h> #ifdef HAVE_SETXATTR #include <sys/xattr.h> #endif #include<stdlib.h> #include <sys/types.h> static const char *dirpath = "/home/oem/Downloads"; static int xmp_getattr(const char *path, struct stat *stbuf) { int res; char fpath[1000]; sprintf(fpath,"%s%s",dirpath,path); res = lstat(fpath, stbuf); if (res == -1) return -errno; return 0; } static int xmp_readdir(const char *path, void *buf, fuse_fill_dir_t filler,off_t offset, struct fuse_file_info *fi) { DIR *dp; struct dirent *de; char fpath[1000]; sprintf(fpath,"%s%s",dirpath,path); (void) offset; (void) fi; dp = opendir(fpath); if (dp == NULL) return -errno; while ((de = readdir(dp)) != NULL) { struct stat st; memset(&st, 0, sizeof(st)); st.st_ino = de->d_ino; st.st_mode = de->d_type << 12; if (filler(buf, de->d_name, &st, 0)) break; } closedir(dp); return 0; } static int xmp_open(const char *path, struct fuse_file_info *fi) { int res; char fpath[1000]; sprintf(fpath,"%s%s",dirpath,path); char ch, source_file[1000], target_file[1000]; FILE *source, *target; sprintf(source_file,"%s",fpath); source = fopen(source_file, "r"); sprintf(target_file,"%s.bak",fpath); int ada; ada = access(target_file,F_OK); if(ada==0) { remove(target_file); } target = fopen(target_file, "w"); while( ( ch = fgetc(source) ) != EOF ) fputc(ch, target); char command[100]; sprintf(command,"chmod 444 '%s.bak'",fpath); system(command); fclose(source); fclose(target); res = open(fpath, fi->flags); if (res == -1) return -errno; close(res); return 0; } static int xmp_read(const char *path, char *buf, size_t size, off_t offset,struct fuse_file_info *fi) { int fd; int res; char fpath[1000]; sprintf(fpath,"%s%s",dirpath,path); (void) fi; fd = open(fpath, O_RDONLY); if (fd == -1) return -errno; res = pread(fd, buf, size, offset); if (res == -1) res = -errno; close(fd); return res; } static int xmp_write(const char *path, const char *buf, size_t size,off_t offset, struct fuse_file_info *fi) { int fd; int res; char fpath[1000]; sprintf(fpath,"%s%s",dirpath,path); (void) fi; fd = open(fpath, O_WRONLY); if (fd == -1) return -errno; res = pwrite(fd, buf, size, offset); if (res == -1) res = -errno; close(fd); return res; } static struct fuse_operations xmp_oper = { .getattr = xmp_getattr, .readdir = xmp_readdir, #ifdef HAVE_UTIMENSAT .utimens = xmp_utimens, #endif .open = xmp_open, .read = xmp_read, .write = xmp_write, #ifdef HAVE_POSIX_FALLOCATE .fallocate = xmp_fallocate, #endif #ifdef HAVE_SETXATTR .setxattr = xmp_setxattr, .getxattr = xmp_getxattr, .listxattr = xmp_listxattr, .removexattr = xmp_removexattr, #endif }; int main(int argc, char *argv[]) { umask(0); return fuse_main(argc, argv, &xmp_oper, NULL); }

sudah? saya bakal jelasin kodingan diatas sedikit
deklarasi dirpath digunakan untuk menset folder mana yang akan dimount.
fungsi xmp_getattr digunakan untuk mendapatlan atribut.
fungsi xmp_readdir digunakan untuk membaca file dalam folder yang dimount.
fungsi xmp_open digunakan untuk membuka dan mengubah file didalamnya menjadi .bak
fungsi xmp_read digunakan untuk membaca file.
fungsi xmp_write digunakan untuk menulis file.
ketik gcc -Wall [nama file].c `pkg-config fuse --cflags --libs` -o [nama file] untuk mengompile file tadi. dan coba jalankan file dan cek explorenya KECAWWW!!!