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Annotation of 43BSDReno/lib/libc/gen/setmode.3, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1989 The Regents of the University of California.
                      2: .\" All rights reserved.
                      3: .\"
                      4: .\" Redistribution and use in source and binary forms are permitted provided
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                     14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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                     18: .\"    @(#)setmode.3   5.3 (Berkeley) 6/23/90
                     19: .\"
                     20: .TH SETMODE 3 "June 23, 1990"
                     21: .UC 7
                     22: .SH NAME
                     23: getmode, setmode \- modify mode bits
                     24: .SH SYNOPSIS
                     25: .nf
                     26: .ft B
                     27: getmode(set, mode)
                     28: mode_t *set, mode;
                     29: 
                     30: set = setmode(mode_str)
                     31: mode_t *set;
                     32: char *mode_str;
                     33: .ft R
                     34: .fi
                     35: .SH DESCRIPTION
                     36: .I Getmode
                     37: returns a copy of the file permission bits
                     38: .I mode
                     39: as altered by the values pointed to by
                     40: .IR set .
                     41: While only the mode bits are altered, other parts of the file mode
                     42: may be examined.
                     43: .PP
                     44: .I Setmode
                     45: takes an absolute (octal) or symbolic value, as described in
                     46: .IR chmod (1),
                     47: as an argument
                     48: and returns a pointer to mode values to be supplied to
                     49: .IR getmode .
                     50: Because some of the symbolic values are relative to the file
                     51: creation mask,
                     52: .I setmode
                     53: may call
                     54: .IR umask (2).
                     55: If this occurs, the file creation mask will be restored before
                     56: .I setmode
                     57: returns.
                     58: If the calling program changes the value of its file creation mask
                     59: after calling
                     60: .IR setmode ,
                     61: .I setmode
                     62: must be called again if
                     63: .I getmode
                     64: is to modify future file modes correctly.
                     65: .PP
                     66: If the mode passed to
                     67: .I setmode
                     68: is invalid,
                     69: .I setmode
                     70: returns NULL.
                     71: .SH ERRORS
                     72: .I Setmode
                     73: may fail and set errno for any of the errors specified for the library
                     74: routine
                     75: .IR malloc (3).
                     76: .SH SEE ALSO
                     77: chmod(1), stat(2), umask(2), malloc(3)

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