libbb/gzip.h

   1 /*
   2  *  Copyright (C) 2016 Jo-Philipp Wich <jo@mein.io>
   3  *
   4  *  Zlib decrompression utility routines.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <signal.h>
  23 #include <pthread.h>
  24
  25 struct gzip_handle {
  26         FILE *file;
  27         struct gzip_handle *gzip;
  28
  29         pid_t pid;
  30         int rfd, wfd;
  31         struct sigaction pipe_sa;
  32         pthread_t thread;
  33 };
  34
  35 int gzip_exec(struct gzip_handle *zh, const char *filename);
  36 ssize_t gzip_read(struct gzip_handle *zh, void *buf, ssize_t len);
  37 ssize_t gzip_copy(struct gzip_handle *zh, FILE * out, ssize_t len);
  38 int gzip_close(struct gzip_handle *zh);
  39 FILE *gzip_fdopen(struct gzip_handle *zh, const char *filename);
  40
  41 #define gzip_seek(zh, len) gzip_copy(zh, NULL, len)