136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
#include "fuse_local.h"
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#include "link.h"
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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static void *fs_init(struct fuse_conn_info *conn);
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static int fs_getattr(const char *path, struct stat *stbuf);
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static int fs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
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off_t offset, struct fuse_file_info *fi);
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static int fs_open(const char *path, struct fuse_file_info *fi);
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static int fs_read(const char *path, char *buf, size_t size, off_t offset,
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struct fuse_file_info *fi);
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static struct fuse_operations fs_oper = {
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.getattr = fs_getattr,
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.readdir = fs_readdir,
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.open = fs_open,
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.read = fs_read,
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.init = fs_init
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};
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int fuse_local_init(int argc, char **argv)
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{
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return fuse_main(argc, argv, &fs_oper, NULL);
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}
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static void *fs_init(struct fuse_conn_info *conn)
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{
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(void) conn;
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return NULL;
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}
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/** \brief return the attributes for a single file indicated by path */
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static int fs_getattr(const char *path, struct stat *stbuf)
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{
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int res = 0;
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memset(stbuf, 0, sizeof(struct stat));
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if (!strcmp(path, "/")) {
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stbuf->st_mode = S_IFDIR | 0755;
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stbuf->st_nlink = 1;
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} else {
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Link *link = path_to_Link(path);
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if (!link) {
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return -ENOENT;
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}
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struct timespec spec;
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spec.tv_sec = link->time;
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stbuf->st_mtim = spec;
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switch (link->type) {
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case LINK_DIR:
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stbuf->st_mode = S_IFDIR | 0755;
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stbuf->st_nlink = 1;
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break;
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case LINK_FILE:
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stbuf->st_mode = S_IFREG | 0444;
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stbuf->st_nlink = 1;
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stbuf->st_size = link->content_length;
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stbuf->st_blksize = 128*1024;
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stbuf->st_blocks = (link->content_length)/512;
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break;
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default:
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return -ENOENT;
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}
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}
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stbuf->st_uid = getuid();
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stbuf->st_gid = getgid();
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return res;
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}
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/** \brief read a file */
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static int fs_read(const char *path, char *buf, size_t size, off_t offset,
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struct fuse_file_info *fi)
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{
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(void) fi;
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long received = path_download(path, buf, size, offset);
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return received;
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}
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/** \brief open a file indicated by the path */
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static int fs_open(const char *path, struct fuse_file_info *fi)
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{
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if (!path_to_Link(path)) {
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return -ENOENT;
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}
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if ((fi->flags & 3) != O_RDONLY) {
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return -EACCES;
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}
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return 0;
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}
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/** \brief read the directory indicated by the path*/
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static int fs_readdir(const char *path, void *buf, fuse_fill_dir_t dir_add,
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off_t offset, struct fuse_file_info *fi)
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{
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(void) offset;
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(void) fi;
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Link *link;
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LinkTable *linktbl;
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if (!strcmp(path, "/")) {
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linktbl = ROOT_LINK_TBL;
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} else {
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link = path_to_Link(path);
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if (!link) {
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return -ENOENT;
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}
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linktbl = link->next_table;
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if (!linktbl) {
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linktbl = LinkTable_new(link->f_url);
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if(!linktbl) {
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return -ENOENT;
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}
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}
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}
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/* start adding the links */
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dir_add(buf, ".", NULL, 0);
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dir_add(buf, "..", NULL, 0);
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for (int i = 1; i < linktbl->num; i++) {
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link = linktbl->links[i];
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if (link->type != LINK_INVALID) {
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dir_add(buf, link->p_url, NULL, 0);
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}
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}
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return 0;
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}
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