xref: /freebsd/sys/contrib/zstd/zlibWrapper/gzclose.c (revision 2f7b0de1de4749e24608fc89a2db63e723c253d2)
1 /* gzclose.c contains minimal changes required to be compiled with zlibWrapper:
2  * - gz_statep was converted to union to work with -Wstrict-aliasing=1      */
3 
4 /* gzclose.c -- zlib gzclose() function
5  * Copyright (C) 2004, 2010 Mark Adler
6  * For conditions of distribution and use, see http://www.zlib.net/zlib_license.html
7  */
8 
9 #include "gzguts.h"
10 
11 /* gzclose() is in a separate file so that it is linked in only if it is used.
12    That way the other gzclose functions can be used instead to avoid linking in
13    unneeded compression or decompression routines. */
14 int ZEXPORT gzclose(file)
15     gzFile file;
16 {
17 #ifndef NO_GZCOMPRESS
18     gz_statep state;
19 
20     if (file == NULL)
21         return Z_STREAM_ERROR;
22     state.file = file;
23 
24     return state.state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
25 #else
26     return gzclose_r(file);
27 #endif
28 }
29