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#define FUSE_USE_VERSION 26
#include <fuse.h>
#include <string.h>
#include <errno.h>
static const char *filepath = "/file";
static const char *filename = "file";
static const char *filecontent = "I'm the content of the only file available there\n";
static int getattr_callback(const char *path, struct stat *stbuf) {
memset(stbuf, 0, sizeof(struct stat));
if (strcmp(path, "/") == 0) {
stbuf->st_mode = S_IFDIR | 0755;
stbuf->st_nlink = 2;
return 0;
}
if (strcmp(path, filepath) == 0) {
stbuf->st_mode = S_IFREG | 0777;
stbuf->st_nlink = 1;
stbuf->st_size = strlen(filecontent);
return 0;
}
return -ENOENT;
}
static int readdir_callback(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi) {
(void) offset;
(void) fi;
filler(buf, ".", NULL, 0);
filler(buf, "..", NULL, 0);
filler(buf, filename, NULL, 0);
return 0;
}
static int open_callback(const char *path, struct fuse_file_info *fi) {
return 0;
}
static int read_callback(const char *path, char *buf, size_t size, off_t offset,
struct fuse_file_info *fi) {
if (strcmp(path, filepath) == 0) {
size_t len = strlen(filecontent);
if (offset >= len) {
return 0;
}
if (offset + size > len) {
memcpy(buf, filecontent + offset, len - offset);
return len - offset;
}
memcpy(buf, filecontent + offset, size);
return size;
}
return -ENOENT;
}
static struct fuse_operations fuse_example_operations = {
.getattr = getattr_callback,
.open = open_callback,
.read = read_callback,
.readdir = readdir_callback,
};
int main(int argc, char *argv[])
{
return fuse_main(argc, argv, &fuse_example_operations, NULL);
}