summaryrefslogtreecommitdiff
path: root/src/libunixonacid/unixmessage_unput.c
blob: 3ee2abcdf8a995ca34a10e130554b5a6b403c3a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 /* ISC license. */

#include <skalibs/genalloc.h>
#include <skalibs/disize.h>
#include <skalibs/djbunix.h>
#include <skalibs/unixmessage.h>

int unixmessage_unput_and_maybe_drop (unixmessage_sender_t *b, int drop)
{
  disize *start ;
  size_t n = genalloc_len(disize, &b->offsets) ;
  size_t i ;
  int *fds ;
  if (!n) return 0 ;
  start = genalloc_s(disize, &b->offsets) + n - 1 ;
  fds = genalloc_s(int, &b->fds) + start->right ;
  i = genalloc_len(int, &b->fds) - start->right ;
  while (i--)
    if (fds[i] < 0) (*b->closecb)(-(fds[i]+1), b->closecbdata) ;
    else if (drop) fd_close(fds[i]) ;
  b->data.len = start->left ;
  genalloc_setlen(int, &b->fds, start->right) ;
  genalloc_setlen(disize, &b->offsets, n-1) ;
  return 1 ;
}