Attachment 246324 Details for Bug 275099 – helloworld-dir.c

helloworld-dir.c

helloworld-dir.c (text/x-csrc), 1.94 KB, created by WHR on 2023-11-15 06:19:57 UTC

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Creator: WHR

Created: 2023-11-15 06:19:57 UTC

Size: 1.94 KB

patch

obsolete

>/* This file has no copyright assigned and is placed in the Public Domain.
> * No warranty is given.
> */
>
>#define FUSE_USE_VERSION 26
>#include <fuse.h>
>#include <errno.h>
>#include <string.h>
>
>#define STRING1 "This is the root directory\n"
>#define STRING2 "Hello world!\n"
>#define STRING3 "Hello world\n"
>
>static int isdir_getattr(const char *path, struct stat *stbuf) {
>	if(strcmp(path, "/hello/world") == 0) {
>		stbuf->st_mode = S_IFREG | 0644;
>		stbuf->st_nlink = 1;
>		stbuf->st_size = sizeof STRING3 - 1;
>	} else if(strcmp(path, "/hello") == 0) {
>		stbuf->st_mode = S_IFDIR | 0755;
>		stbuf->st_nlink = 2;
>		stbuf->st_size = sizeof STRING2 - 1;
>	} else if(strcmp(path, "/") == 0) {
>		stbuf->st_mode = S_IFDIR | 0755;
>		stbuf->st_nlink = 2;
>		stbuf->st_size = sizeof STRING1 - 1;
>	} else {
>		return -ENOENT;
>	}
>	return 0;
>}
>
>static int isdir_readdir(const char *path, void *buf, fuse_fill_dir_t filler, off_t offset, struct fuse_file_info *fi) {
>	if(strcmp(path, "/hello") == 0) {
>		filler(buf, ".", NULL, 0);
>		filler(buf, "..", NULL, 0);
>		filler(buf, "world", NULL, 0);
>	} else if(strcmp(path, "/") == 0) {
>		filler(buf, ".", NULL, 0);
>		filler(buf, "hello", NULL, 0);
>	} else {
>		return -ENOENT;
>	}
>	return 0;
>}
>
>static int isdir_read(const char *path, char *buf, size_t size, off_t offset, struct fuse_file_info *fi) {
>	const char *p;
>	size_t length;
>	if(strcmp(path, "/hello/world") == 0) {
>		p = STRING3;
>		length = sizeof STRING3 - 1;
>	} else if(strcmp(path, "/hello") == 0) {
>		p = STRING2;
>		length = sizeof STRING2 - 1;
>	} else if(strcmp(path, "/") == 0) {
>		p = STRING1;
>		length = sizeof STRING1 - 1;
>	} else {
>		return -ENOENT;
>	}
>	if(offset >= length) return 0;
>	if(offset + size > length) size = length - offset;
>	memcpy(buf, p + offset, size);
>	return size;
>}
>
>static struct fuse_operations isdir_oper = {
>	.getattr	= isdir_getattr,
>	.readdir	= isdir_readdir,
>	.read		= isdir_read,
>};
>
>int main(int argc, char **argv) {
>	return fuse_main(argc, argv, &isdir_oper, NULL);
>}

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Attachments on bug 275099: 246324 | 246325