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-rw-r--r--example-26/.gitignore4
-rw-r--r--example-26/Makefile.am12
-rw-r--r--example-26/fusexmp.c383
-rw-r--r--example-26/fusexmp_fh.c458
-rw-r--r--example-26/hello.c98
-rw-r--r--example-26/hello_ll.c180
-rw-r--r--example-26/null.c92
7 files changed, 1227 insertions, 0 deletions
diff --git a/example-26/.gitignore b/example-26/.gitignore
new file mode 100644
index 000000000..929ddf159
--- /dev/null
+++ b/example-26/.gitignore
@@ -0,0 +1,4 @@
+fusexmp
+fusexmp_fh
+hello
+null
diff --git a/example-26/Makefile.am b/example-26/Makefile.am
new file mode 100644
index 000000000..5b0c03d05
--- /dev/null
+++ b/example-26/Makefile.am
@@ -0,0 +1,12 @@
+## Process this file with automake to produce Makefile.in
+
+noinst_PROGRAMS = fusexmp fusexmp_fh null hello
+# low-level api not supported: hello_ll
+
+fusexmp_SOURCES = fusexmp.c
+fusexmp_fh_SOURCES = fusexmp_fh.c
+null_SOURCES = null.c
+hello_SOURCES = hello.c
+
+LDADD = ../src/libfuse.la
+AM_CPPFLAGS = -DFUSE_USE_VERSION=26 -I$(top_srcdir) -I$(top_srcdir)/include
diff --git a/example-26/fusexmp.c b/example-26/fusexmp.c
new file mode 100644
index 000000000..b086235c2
--- /dev/null
+++ b/example-26/fusexmp.c
@@ -0,0 +1,383 @@
+/*
+ FUSE: Filesystem in Userspace
+ Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+
+ This program can be distributed under the terms of the GNU GPL.
+ See the file COPYING.
+
+ gcc -Wall `pkg-config fuse --cflags --libs` fusexmp.c -o fusexmp
+*/
+
+#define FUSE_USE_VERSION 26
+
+#include <config.h>
+
+#ifdef linux
+/* For pread()/pwrite() */
+#define _XOPEN_SOURCE 500
+#endif
+
+#include <fuse.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.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)
+{
+ DIR *dp;
+ struct dirent *de;
+
+ (void) offset;
+ (void) fi;
+
+ 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))
+ 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)
+{
+ int res;
+
+ 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;
+}
+
+static int xmp_utimens(const char *path, const struct timespec ts[2])
+{
+ int res;
+ struct timeval tv[2];
+
+ tv[0].tv_sec = ts[0].tv_sec;
+ tv[0].tv_usec = ts[0].tv_nsec / 1000;
+ tv[1].tv_sec = ts[1].tv_sec;
+ tv[1].tv_usec = ts[1].tv_nsec / 1000;
+
+ res = utimes(path, tv);
+ if (res == -1)
+ return -errno;
+
+ return 0;
+}
+
+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_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,
+ .utimens = xmp_utimens,
+ .open = xmp_open,
+ .read = xmp_read,
+ .write = xmp_write,
+ .statfs = xmp_statfs,
+ .release = xmp_release,
+ .fsync = xmp_fsync,
+#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);
+}
diff --git a/example-26/fusexmp_fh.c b/example-26/fusexmp_fh.c
new file mode 100644
index 000000000..f8c1ed482
--- /dev/null
+++ b/example-26/fusexmp_fh.c
@@ -0,0 +1,458 @@
+/*
+ FUSE: Filesystem in Userspace
+ Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+
+ This program can be distributed under the terms of the GNU GPL.
+ See the file COPYING.
+
+ gcc -Wall `pkg-config fuse --cflags --libs` -lulockmgr fusexmp_fh.c -o fusexmp_fh
+*/
+
+#define FUSE_USE_VERSION 26
+
+#include <config.h>
+
+#define _GNU_SOURCE
+
+#include <fuse.h>
+#include <ulockmgr.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.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_fgetattr(const char *path, struct stat *stbuf,
+ struct fuse_file_info *fi)
+{
+ int res;
+
+ (void) path;
+
+ res = fstat(fi->fh, 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_opendir(const char *path, struct fuse_file_info *fi)
+{
+ DIR *dp = opendir(path);
+ if (dp == NULL)
+ return -errno;
+
+ fi->fh = (unsigned long) dp;
+ return 0;
+}
+
+static inline DIR *get_dirp(struct fuse_file_info *fi)
+{
+ return (DIR *) (uintptr_t) fi->fh;
+}
+
+static int xmp_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
+ off_t offset, struct fuse_file_info *fi)
+{
+ DIR *dp = get_dirp(fi);
+ struct dirent *de;
+
+ (void) path;
+ seekdir(dp, offset);
+ 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, telldir(dp)))
+ break;
+ }
+
+ return 0;
+}
+
+static int xmp_releasedir(const char *path, struct fuse_file_info *fi)
+{
+ DIR *dp = get_dirp(fi);
+ (void) path;
+ closedir(dp);
+ return 0;
+}
+
+static int xmp_mknod(const char *path, mode_t mode, dev_t rdev)
+{
+ int res;
+
+ 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)
+{
+ int res;
+
+ 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;
+}
+
+static int xmp_ftruncate(const char *path, off_t size,
+ struct fuse_file_info *fi)
+{
+ int res;
+
+ (void) path;
+
+ res = ftruncate(fi->fh, size);
+ if (res == -1)
+ return -errno;
+
+ return 0;
+}
+
+static int xmp_utimens(const char *path, const struct timespec ts[2])
+{
+ int res;
+ struct timeval tv[2];
+
+ tv[0].tv_sec = ts[0].tv_sec;
+ tv[0].tv_usec = ts[0].tv_nsec / 1000;
+ tv[1].tv_sec = ts[1].tv_sec;
+ tv[1].tv_usec = ts[1].tv_nsec / 1000;
+
+ res = utimes(path, tv);
+ if (res == -1)
+ return -errno;
+
+ return 0;
+}
+
+static int xmp_create(const char *path, mode_t mode, struct fuse_file_info *fi)
+{
+ int fd;
+
+ fd = open(path, fi->flags, mode);
+ if (fd == -1)
+ return -errno;
+
+ fi->fh = fd;
+ return 0;
+}
+
+static int xmp_open(const char *path, struct fuse_file_info *fi)
+{
+ int fd;
+
+ fd = open(path, fi->flags);
+ if (fd == -1)
+ return -errno;
+
+ fi->fh = fd;
+ return 0;
+}
+
+static int xmp_read(const char *path, char *buf, size_t size, off_t offset,
+ struct fuse_file_info *fi)
+{
+ int res;
+
+ (void) path;
+ res = pread(fi->fh, buf, size, offset);
+ if (res == -1)
+ res = -errno;
+
+ return res;
+}
+
+static int xmp_write(const char *path, const char *buf, size_t size,
+ off_t offset, struct fuse_file_info *fi)
+{
+ int res;
+
+ (void) path;
+ res = pwrite(fi->fh, buf, size, offset);
+ if (res == -1)
+ res = -errno;
+
+ 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_flush(const char *path, struct fuse_file_info *fi)
+{
+ int res;
+
+ (void) path;
+ /* This is called from every close on an open file, so call the
+ close on the underlying filesystem. But since flush may be
+ called multiple times for an open file, this must not really
+ close the file. This is important if used on a network
+ filesystem like NFS which flush the data/metadata on close() */
+ res = close(dup(fi->fh));
+ if (res == -1)
+ return -errno;
+
+ return 0;
+}
+
+static int xmp_release(const char *path, struct fuse_file_info *fi)
+{
+ (void) path;
+ close(fi->fh);
+
+ return 0;
+}
+
+static int xmp_fsync(const char *path, int isdatasync,
+ struct fuse_file_info *fi)
+{
+ int res;
+ (void) path;
+
+#ifndef HAVE_FDATASYNC
+ (void) isdatasync;
+#else
+ if (isdatasync)
+ res = fdatasync(fi->fh);
+ else
+#endif
+ res = fsync(fi->fh);
+ if (res == -1)
+ return -errno;
+
+ return 0;
+}
+
+#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 int xmp_lock(const char *path, struct fuse_file_info *fi, int cmd,
+ struct flock *lock)
+{
+ (void) path;
+
+ return ulockmgr_op(fi->fh, cmd, lock, &fi->lock_owner,
+ sizeof(fi->lock_owner));
+}
+
+static struct fuse_operations xmp_oper = {
+ .getattr = xmp_getattr,
+ .fgetattr = xmp_fgetattr,
+ .access = xmp_access,
+ .readlink = xmp_readlink,
+ .opendir = xmp_opendir,
+ .readdir = xmp_readdir,
+ .releasedir = xmp_releasedir,
+ .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,
+ .ftruncate = xmp_ftruncate,
+ .utimens = xmp_utimens,
+ .create = xmp_create,
+ .open = xmp_open,
+ .read = xmp_read,
+ .write = xmp_write,
+ .statfs = xmp_statfs,
+ .flush = xmp_flush,
+ .release = xmp_release,
+ .fsync = xmp_fsync,
+#ifdef HAVE_SETXATTR
+ .setxattr = xmp_setxattr,
+ .getxattr = xmp_getxattr,
+ .listxattr = xmp_listxattr,
+ .removexattr= xmp_removexattr,
+#endif
+ .lock = xmp_lock,
+};
+
+int main(int argc, char *argv[])
+{
+ umask(0);
+ return fuse_main(argc, argv, &xmp_oper, NULL);
+}
diff --git a/example-26/hello.c b/example-26/hello.c
new file mode 100644
index 000000000..7a1cdb59e
--- /dev/null
+++ b/example-26/hello.c
@@ -0,0 +1,98 @@
+/*
+ FUSE: Filesystem in Userspace
+ Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+
+ This program can be distributed under the terms of the GNU GPL.
+ See the file COPYING.
+
+ gcc -Wall `pkg-config fuse --cflags --libs` hello.c -o hello
+*/
+
+#define FUSE_USE_VERSION 26
+
+#include <fuse.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+
+static const char *hello_str = "Hello World!\n";
+static const char *hello_path = "/hello";
+
+static int hello_getattr(const char *path, struct stat *stbuf)
+{
+ int res = 0;
+
+ memset(stbuf, 0, sizeof(struct stat));
+ if(strcmp(path, "/") == 0) {
+ stbuf->st_mode = S_IFDIR | 0755;
+ stbuf->st_nlink = 2;
+ }
+ else if(strcmp(path, hello_path) == 0) {
+ stbuf->st_mode = S_IFREG | 0444;
+ stbuf->st_nlink = 1;
+ stbuf->st_size = strlen(hello_str);
+ }
+ else
+ res = -ENOENT;
+
+ return res;
+}
+
+static int hello_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
+ off_t offset, struct fuse_file_info *fi)
+{
+ (void) offset;
+ (void) fi;
+
+ if(strcmp(path, "/") != 0)
+ return -ENOENT;
+
+ filler(buf, ".", NULL, 0);
+ filler(buf, "..", NULL, 0);
+ filler(buf, hello_path + 1, NULL, 0);
+
+ return 0;
+}
+
+static int hello_open(const char *path, struct fuse_file_info *fi)
+{
+ if(strcmp(path, hello_path) != 0)
+ return -ENOENT;
+
+ if((fi->flags & 3) != O_RDONLY)
+ return -EACCES;
+
+ return 0;
+}
+
+static int hello_read(const char *path, char *buf, size_t size, off_t offset,
+ struct fuse_file_info *fi)
+{
+ size_t len;
+ (void) fi;
+ if(strcmp(path, hello_path) != 0)
+ return -ENOENT;
+
+ len = strlen(hello_str);
+ if (offset < len) {
+ if (offset + size > len)
+ size = len - offset;
+ memcpy(buf, hello_str + offset, size);
+ } else
+ size = 0;
+
+ return size;
+}
+
+static struct fuse_operations hello_oper = {
+ .getattr = hello_getattr,
+ .readdir = hello_readdir,
+ .open = hello_open,
+ .read = hello_read,
+};
+
+int main(int argc, char *argv[])
+{
+ return fuse_main(argc, argv, &hello_oper, NULL);
+}
diff --git a/example-26/hello_ll.c b/example-26/hello_ll.c
new file mode 100644
index 000000000..934e9a720
--- /dev/null
+++ b/example-26/hello_ll.c
@@ -0,0 +1,180 @@
+/*
+ FUSE: Filesystem in Userspace
+ Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+
+ This program can be distributed under the terms of the GNU GPL.
+ See the file COPYING.
+
+ gcc -Wall `pkg-config fuse --cflags --libs` hello_ll.c -o hello_ll
+*/
+
+#define FUSE_USE_VERSION 26
+
+#include <fuse_lowlevel.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <assert.h>
+
+static const char *hello_str = "Hello World!\n";
+static const char *hello_name = "hello";
+
+static int hello_stat(fuse_ino_t ino, struct stat *stbuf)
+{
+ stbuf->st_ino = ino;
+ switch (ino) {
+ case 1:
+ stbuf->st_mode = S_IFDIR | 0755;
+ stbuf->st_nlink = 2;
+ break;
+
+ case 2:
+ stbuf->st_mode = S_IFREG | 0444;
+ stbuf->st_nlink = 1;
+ stbuf->st_size = strlen(hello_str);
+ break;
+
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+static void hello_ll_getattr(fuse_req_t req, fuse_ino_t ino,
+ struct fuse_file_info *fi)
+{
+ struct stat stbuf;
+
+ (void) fi;
+
+ memset(&stbuf, 0, sizeof(stbuf));
+ if (hello_stat(ino, &stbuf) == -1)
+ fuse_reply_err(req, ENOENT);
+ else
+ fuse_reply_attr(req, &stbuf, 1.0);
+}
+
+static void hello_ll_lookup(fuse_req_t req, fuse_ino_t parent, const char *name)
+{
+ struct fuse_entry_param e;
+
+ if (parent != 1 || strcmp(name, hello_name) != 0)
+ fuse_reply_err(req, ENOENT);
+ else {
+ memset(&e, 0, sizeof(e));
+ e.ino = 2;
+ e.attr_timeout = 1.0;
+ e.entry_timeout = 1.0;
+ hello_stat(e.ino, &e.attr);
+
+ fuse_reply_entry(req, &e);
+ }
+}
+
+struct dirbuf {
+ char *p;
+ size_t size;
+};
+
+static void dirbuf_add(fuse_req_t req, struct dirbuf *b, const char *name,
+ fuse_ino_t ino)
+{
+ struct stat stbuf;
+ size_t oldsize = b->size;
+ b->size += fuse_add_direntry(req, NULL, 0, name, NULL, 0);
+ b->p = (char *) realloc(b->p, b->size);
+ memset(&stbuf, 0, sizeof(stbuf));
+ stbuf.st_ino = ino;
+ fuse_add_direntry(req, b->p + oldsize, b->size - oldsize, name, &stbuf,
+ b->size);
+}
+
+#define min(x, y) ((x) < (y) ? (x) : (y))
+
+static int reply_buf_limited(fuse_req_t req, const char *buf, size_t bufsize,
+ off_t off, size_t maxsize)
+{
+ if (off < bufsize)
+ return fuse_reply_buf(req, buf + off, min(bufsize - off, maxsize));
+ else
+ return fuse_reply_buf(req, NULL, 0);
+}
+
+static void hello_ll_readdir(fuse_req_t req, fuse_ino_t ino, size_t size,
+ off_t off, struct fuse_file_info *fi)
+{
+ (void) fi;
+
+ if (ino != 1)
+ fuse_reply_err(req, ENOTDIR);
+ else {
+ struct dirbuf b;
+
+ memset(&b, 0, sizeof(b));
+ dirbuf_add(req, &b, ".", 1);
+ dirbuf_add(req, &b, "..", 1);
+ dirbuf_add(req, &b, hello_name, 2);
+ reply_buf_limited(req, b.p, b.size, off, size);
+ free(b.p);
+ }
+}
+
+static void hello_ll_open(fuse_req_t req, fuse_ino_t ino,
+ struct fuse_file_info *fi)
+{
+ if (ino != 2)
+ fuse_reply_err(req, EISDIR);
+ else if ((fi->flags & 3) != O_RDONLY)
+ fuse_reply_err(req, EACCES);
+ else
+ fuse_reply_open(req, fi);
+}
+
+static void hello_ll_read(fuse_req_t req, fuse_ino_t ino, size_t size,
+ off_t off, struct fuse_file_info *fi)
+{
+ (void) fi;
+
+ assert(ino == 2);
+ reply_buf_limited(req, hello_str, strlen(hello_str), off, size);
+}
+
+static struct fuse_lowlevel_ops hello_ll_oper = {
+ .lookup = hello_ll_lookup,
+ .getattr = hello_ll_getattr,
+ .readdir = hello_ll_readdir,
+ .open = hello_ll_open,
+ .read = hello_ll_read,
+};
+
+int main(int argc, char *argv[])
+{
+ struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
+ struct fuse_chan *ch;
+ char *mountpoint;
+ int err = -1;
+
+ if (fuse_parse_cmdline(&args, &mountpoint, NULL, NULL) != -1 &&
+ (ch = fuse_mount(mountpoint, &args)) != NULL) {
+ struct fuse_session *se;
+
+ se = fuse_lowlevel_new(&args, &hello_ll_oper, sizeof(hello_ll_oper),
+ NULL);
+ if (se != NULL) {
+ if (fuse_set_signal_handlers(se) != -1) {
+ fuse_session_add_chan(se, ch);
+ err = fuse_session_loop(se);
+ fuse_remove_signal_handlers(se);
+ fuse_session_remove_chan(ch);
+ }
+ fuse_session_destroy(se);
+ }
+ fuse_unmount(mountpoint, ch);
+ }
+ fuse_opt_free_args(&args);
+
+ return err ? 1 : 0;
+}
diff --git a/example-26/null.c b/example-26/null.c
new file mode 100644
index 000000000..1ab6573a4
--- /dev/null
+++ b/example-26/null.c
@@ -0,0 +1,92 @@
+/*
+ FUSE: Filesystem in Userspace
+ Copyright (C) 2001-2006 Miklos Szeredi <miklos@szeredi.hu>
+
+ This program can be distributed under the terms of the GNU GPL.
+ See the file COPYING.
+
+ gcc -Wall `pkg-config fuse --cflags --libs` null.c -o null
+*/
+
+#define FUSE_USE_VERSION 26
+
+#include <fuse.h>
+#include <string.h>
+#include <unistd.h>
+#include <time.h>
+#include <errno.h>
+
+static int null_getattr(const char *path, struct stat *stbuf)
+{
+ if(strcmp(path, "/") != 0)
+ return -ENOENT;
+
+ stbuf->st_mode = S_IFREG | 0644;
+ stbuf->st_nlink = 1;
+ stbuf->st_uid = getuid();
+ stbuf->st_gid = getgid();
+ stbuf->st_size = (1ULL << 32); /* 4G */
+ stbuf->st_blocks = 0;
+ stbuf->st_atime = stbuf->st_mtime = stbuf->st_ctime = time(NULL);
+
+ return 0;
+}
+
+static int null_truncate(const char *path, off_t size)
+{
+ (void) size;
+
+ if(strcmp(path, "/") != 0)
+ return -ENOENT;
+
+ return 0;
+}
+
+static int null_open(const char *path, struct fuse_file_info *fi)
+{
+ (void) fi;
+
+ if(strcmp(path, "/") != 0)
+ return -ENOENT;
+
+ return 0;
+}
+
+static int null_read(const char *path, char *buf, size_t size,
+ off_t offset, struct fuse_file_info *fi)
+{
+ (void) buf;
+ (void) offset;
+ (void) fi;
+
+ if(strcmp(path, "/") != 0)
+ return -ENOENT;
+
+ return size;
+}
+
+static int null_write(const char *path, const char *buf, size_t size,
+ off_t offset, struct fuse_file_info *fi)
+{
+ (void) buf;
+ (void) offset;
+ (void) fi;
+
+ if(strcmp(path, "/") != 0)
+ return -ENOENT;
+
+ return size;
+}
+
+static struct fuse_operations null_oper = {
+ .getattr = null_getattr,
+ .truncate = null_truncate,
+ .open = null_open,
+ .read = null_read,
+ .write = null_write,
+};
+
+int main(int argc, char *argv[])
+{
+ return fuse_main(argc, argv, &null_oper, NULL);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-05 01:41:22 +0000