ZOPEN(3)						   BSD Library Functions Manual 						  ZOPEN(3)

NAME

     zopen -- open a gzip compressed stream

LIBRARY

     Compression Library (libz, -lz)

SYNOPSIS

     FILE *
     zopen(const char *path, const char *mode);

DESCRIPTION

     The zopen() opens a gzip file whose name is the string pointed to by path and associates a stream with it.  It is a wrapper around zlib(3)
     and standard stream I/O APIs.

     The argument mode have the same meaning as it does in fopen(3).

     The zopen function will associate read, write, seek and close functions of zlib(3) after successfully opened a file with funopen(3) so that
     they will be used to read or write the new stream.

RETURN VALUES

     Upon successful completion zopen returns a FILE pointer.  Otherwise, NULL is returned and the global variable errno is set to indicate the
     error.

ERRORS

     In addition to the errors documented for fopen(3), the zopen function may also fail for:

     [ENOMEM]		Insufficient memory is available.

COMPATIBILITY

     This implementation of zopen function first appeared in NetBSD 1.6 and FreeBSD 4.5.  The zopen function may not be portable to systems other
     than FreeBSD.

SEE ALSO

     fopen(3), funopen(3), zlib(3)

BSD
								   March 5, 2014							       BSD