91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/*
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FUNCTION
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<<remove>>---delete a file's name
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INDEX
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remove
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INDEX
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_remove_r
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ANSI_SYNOPSIS
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#include <stdio.h>
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int remove(char *<[filename]>);
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int _remove_r(struct _reent *<[reent]>, char *<[filename]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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int remove(<[filename]>)
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char *<[filename]>;
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int _remove_r(<[reent]>, <[filename]>)
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struct _reent *<[reent]>;
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char *<[filename]>;
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DESCRIPTION
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Use <<remove>> to dissolve the association between a particular
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filename (the string at <[filename]>) and the file it represents.
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After calling <<remove>> with a particular filename, you will no
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longer be able to open the file by that name.
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In this implementation, you may use <<remove>> on an open file without
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error; existing file descriptors for the file will continue to access
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the file's data until the program using them closes the file.
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The alternate function <<_remove_r>> is a reentrant version. The
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extra argument <[reent]> is a pointer to a reentrancy structure.
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RETURNS
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<<remove>> returns <<0>> if it succeeds, <<-1>> if it fails.
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PORTABILITY
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ANSI C requires <<remove>>, but only specifies that the result on
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failure be nonzero. The behavior of <<remove>> when you call it on an
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open file may vary among implementations.
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Supporting OS subroutine required: <<unlink>>.
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*/
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#include <_ansi.h>
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#include <reent.h>
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#include <stdio.h>
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int
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_DEFUN(_remove_r, (ptr, filename),
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struct _reent *ptr _AND
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_CONST char *filename)
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{
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if (_unlink_r (ptr, filename) == -1)
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return -1;
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return 0;
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}
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#ifndef _REENT_ONLY
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int
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_DEFUN(remove, (filename),
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_CONST char *filename)
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{
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return _remove_r (_REENT, filename);
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}
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#endif
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