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Diffstat (limited to 'draft/fuse-examples/null.c')
-rw-r--r-- | draft/fuse-examples/null.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/draft/fuse-examples/null.c b/draft/fuse-examples/null.c new file mode 100644 index 0000000..b72cf4d --- /dev/null +++ b/draft/fuse-examples/null.c @@ -0,0 +1,95 @@ +/* + FUSE: Filesystem in Userspace + Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> + + This program can be distributed under the terms of the GNU GPL. + See the file COPYING. + + gcc -Wall null.c `pkg-config fuse --cflags --libs` -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; + + if (offset >= (1ULL << 32)) + return 0; + + 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); +} |