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28 .\" @(#)zopen.3 8.1 (Berkeley) 6/9/93
36 .Nd compressed stream open function
38 .Fd #include \&"zopen.h\&"
40 .Fn zopen "const char *path" "const char *mode" "int bits"
45 opens the compressed file whose name is the string pointed to by
47 and associates a stream with it.
51 points to one of the following one-character strings:
52 .Bl -tag -width indent
54 Open compressed file for reading.
55 The stream is positioned at the beginning of the file.
57 Truncate file to zero length or create compressed file for writing.
58 The stream is positioned at the beginning of the file.
61 Any created files will have mode
74 as modified by the process'
78 Files may only be read or written.
79 Seek operations are not allowed.
83 argument, if non-zero, is set to the bits code limit.
84 If zero, the default is 16.
89 Upon successful completion
96 is returned and the global variable
98 is set to indicate the error.
100 .Bl -tag -width [EINVAL]
106 arguments specified to
110 The compressed file starts with an invalid header, or the compressed
111 file is compressed with more bits than can be handled.
116 function may also fail and set
118 for any of the errors specified for the routines
136 may not be portable to systems other than