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Diffstat (limited to 'example/fusexmp.c')
-rw-r--r-- | example/fusexmp.c | 429 |
1 files changed, 0 insertions, 429 deletions
diff --git a/example/fusexmp.c b/example/fusexmp.c deleted file mode 100644 index eae3562..0000000 --- a/example/fusexmp.c +++ /dev/null @@ -1,429 +0,0 @@ -/* - FUSE: Filesystem in Userspace - Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> - Copyright (C) 2011 Sebastian Pipping <sebastian@pipping.org> - - This program can be distributed under the terms of the GNU GPL. - See the file COPYING. -*/ - -/** @file - * @tableofcontents - * - * fusexmp.c - FUSE: Filesystem in Userspace - * - * \section section_compile compiling this example - * - * gcc -Wall fusexmp.c `pkg-config fuse3 --cflags --libs` -o fusexmp - * - * \section section_source the complete source - * \include fusexmp.c - */ - - -#define FUSE_USE_VERSION 30 - -#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 - -static int xmp_getattr(const char *path, struct stat *stbuf) -{ - int res; - - res = lstat(path, stbuf); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_access(const char *path, int mask) -{ - int res; - - res = access(path, mask); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_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 xmp_readdir(const char *path, void *buf, fuse_fill_dir_t filler, - off_t offset, struct fuse_file_info *fi, - enum fuse_readdir_flags flags) -{ - DIR *dp; - struct dirent *de; - - (void) offset; - (void) fi; - (void) flags; - - dp = opendir(path); - 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, 0)) - break; - } - - closedir(dp); - return 0; -} - -static int xmp_mknod(const char *path, mode_t mode, dev_t rdev) -{ - int res; - - /* On Linux this could just be 'mknod(path, mode, rdev)' but this - is more portable */ - if (S_ISREG(mode)) { - res = open(path, O_CREAT | O_EXCL | O_WRONLY, mode); - if (res >= 0) - res = close(res); - } else if (S_ISFIFO(mode)) - res = mkfifo(path, mode); - else - res = mknod(path, mode, rdev); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_mkdir(const char *path, mode_t mode) -{ - int res; - - res = mkdir(path, mode); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_unlink(const char *path) -{ - int res; - - res = unlink(path); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_rmdir(const char *path) -{ - int res; - - res = rmdir(path); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_symlink(const char *from, const char *to) -{ - int res; - - res = symlink(from, to); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_rename(const char *from, const char *to, unsigned int flags) -{ - int res; - - if (flags) - return -EINVAL; - - res = rename(from, to); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_link(const char *from, const char *to) -{ - int res; - - res = link(from, to); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_chmod(const char *path, mode_t mode) -{ - int res; - - res = chmod(path, mode); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_chown(const char *path, uid_t uid, gid_t gid) -{ - int res; - - res = lchown(path, uid, gid); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_truncate(const char *path, off_t size) -{ - int res; - - res = truncate(path, size); - if (res == -1) - return -errno; - - return 0; -} - -#ifdef HAVE_UTIMENSAT -static int xmp_utimens(const char *path, const struct timespec ts[2]) -{ - int res; - - /* don't use utime/utimes since they follow symlinks */ - res = utimensat(0, path, ts, AT_SYMLINK_NOFOLLOW); - if (res == -1) - return -errno; - - return 0; -} -#endif - -static int xmp_open(const char *path, struct fuse_file_info *fi) -{ - int res; - - res = open(path, 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; - - (void) fi; - fd = open(path, 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; - - (void) fi; - fd = open(path, O_WRONLY); - if (fd == -1) - return -errno; - - res = pwrite(fd, buf, size, offset); - if (res == -1) - res = -errno; - - close(fd); - return res; -} - -static int xmp_statfs(const char *path, struct statvfs *stbuf) -{ - int res; - - res = statvfs(path, stbuf); - if (res == -1) - return -errno; - - return 0; -} - -static int xmp_release(const char *path, struct fuse_file_info *fi) -{ - /* Just a stub. This method is optional and can safely be left - unimplemented */ - - (void) path; - (void) fi; - return 0; -} - -static int xmp_fsync(const char *path, int isdatasync, - struct fuse_file_info *fi) -{ - /* Just a stub. This method is optional and can safely be left - unimplemented */ - - (void) path; - (void) isdatasync; - (void) fi; - return 0; -} - -#ifdef HAVE_POSIX_FALLOCATE -static int xmp_fallocate(const char *path, int mode, - off_t offset, off_t length, struct fuse_file_info *fi) -{ - int fd; - int res; - - (void) fi; - - if (mode) - return -EOPNOTSUPP; - - fd = open(path, O_WRONLY); - if (fd == -1) - return -errno; - - res = -posix_fallocate(fd, offset, length); - - close(fd); - return res; -} -#endif - -#ifdef HAVE_SETXATTR -/* xattr operations are optional and can safely be left unimplemented */ -static int xmp_setxattr(const char *path, const char *name, const char *value, - size_t size, int flags) -{ - int res = lsetxattr(path, name, value, size, flags); - if (res == -1) - return -errno; - return 0; -} - -static int xmp_getxattr(const char *path, const char *name, char *value, - size_t size) -{ - int res = lgetxattr(path, name, value, size); - if (res == -1) - return -errno; - return res; -} - -static int xmp_listxattr(const char *path, char *list, size_t size) -{ - int res = llistxattr(path, list, size); - if (res == -1) - return -errno; - return res; -} - -static int xmp_removexattr(const char *path, const char *name) -{ - int res = lremovexattr(path, name); - if (res == -1) - return -errno; - return 0; -} -#endif /* HAVE_SETXATTR */ - -static struct fuse_operations xmp_oper = { - .getattr = xmp_getattr, - .access = xmp_access, - .readlink = xmp_readlink, - .readdir = xmp_readdir, - .mknod = xmp_mknod, - .mkdir = xmp_mkdir, - .symlink = xmp_symlink, - .unlink = xmp_unlink, - .rmdir = xmp_rmdir, - .rename = xmp_rename, - .link = xmp_link, - .chmod = xmp_chmod, - .chown = xmp_chown, - .truncate = xmp_truncate, -#ifdef HAVE_UTIMENSAT - .utimens = xmp_utimens, -#endif - .open = xmp_open, - .read = xmp_read, - .write = xmp_write, - .statfs = xmp_statfs, - .release = xmp_release, - .fsync = xmp_fsync, -#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); -} |