terom@7: 
terom@7: #include <stdlib.h>
terom@7: 
terom@7: #include "dirbuf.h"
terom@7: #include "lib/log.h"
terom@7: #include "lib/math.h"
terom@7: 
terom@7: int dirbuf_init (struct dirbuf *buf, size_t req_size) {
terom@7:     buf->len = req_size;
terom@7:     buf->off = 0;
terom@7:     
terom@7:     INFO("\tdirbuf.init: req_size=%zu", req_size);
terom@7: 
terom@7:     // allocate the mem
terom@7:     if ((buf->buf = malloc(buf->len)) == NULL)
terom@7:         ERROR("malloc");
terom@7:     
terom@7:     // ok
terom@7:     return 0;
terom@7: 
terom@7: error:
terom@7:     return -1;
terom@7: }
terom@7: 
terom@26: size_t difbuf_estimate (size_t req_size, size_t min_namelen) {
terom@26:     char namebuf[DIRBUF_NAME_MAX];
terom@26:     int i;
terom@26:     
terom@26:     // build a dummy string of the right length
terom@26:     for (i = 0; i < min_namelen && i < DIRBUF_NAME_MAX - 1; i++)
terom@26:         namebuf[i] = 'x';
terom@26: 
terom@26:     namebuf[i] = '\0';
terom@26: 
terom@26:     return req_size / (fuse_add_direntry(NULL, NULL, 0, namebuf, NULL, 0));
terom@26: }
terom@26: 
terom@7: int dirbuf_add (fuse_req_t req, off_t req_off, struct dirbuf *buf, off_t ent_off, off_t next_off, const char *ent_name, fuse_ino_t ent_ino, mode_t ent_mode) {
terom@7:     struct stat stbuf;
terom@7:     size_t ent_size;
terom@7: 
terom@7:     INFO("\tdirbuf.add: req_off=%zu, buf->len=%zu, buf->off=%zu, ent_off=%zu, next_off=%zu, ent_name=`%s`, ent_ino=%lu, ent_mode=%07o",
terom@7:         req_off, buf->len, buf->off, ent_off, next_off, ent_name, ent_ino, ent_mode);
terom@7:     
terom@7:     // skip entries as needed
terom@7:     if (ent_off < req_off) 
terom@7:         return 0;
terom@7: 
terom@7:     // set ino
terom@7:     stbuf.st_ino = ent_ino;
terom@7:     stbuf.st_mode = ent_mode;
terom@7:     
terom@7:     // try and add the dirent, and see if it fits
terom@7:     if ((ent_size = fuse_add_direntry(req, buf->buf + buf->off, buf->len - buf->off, ent_name, &stbuf, next_off)) > (buf->len - buf->off)) {
terom@7:         // 'tis full
terom@7:         return 1;
terom@7: 
terom@7:     } else {
terom@7:         // it fit
terom@7:         buf->off += ent_size;
terom@7:     }
terom@7: 
terom@7:     // success
terom@7:     return 0;
terom@7: }
terom@7: 
terom@7: int dirbuf_done (fuse_req_t req, struct dirbuf *buf) {
terom@7:     int err;
terom@7:     
terom@7:     // send the reply, return the error later
terom@7:     err = fuse_reply_buf(req, buf->buf, buf->off);
terom@7: 
terom@7:     INFO("\tdirbuf.done: size=%zu/%zu, err=%d", buf->off, buf->len, err);
terom@7: 
terom@7:     // free the dirbuf
terom@7:     free(buf->buf);
terom@7: 
terom@7:     // return the error code
terom@7:     return err;
terom@7: }
terom@7: