newlib-cygwin/newlib/libc/stdio/remove.c

70 lines
1.5 KiB
C

/*
FUNCTION
<<remove>>---delete a file's name
INDEX
remove
ANSI_SYNOPSIS
#include <stdio.h>
int remove(char *<[filename]>);
int _remove_r(void *<[reent]>, char *<[filename]>);
TRAD_SYNOPSIS
#include <stdio.h>
int remove(<[filename]>)
char *<[filename]>;
int _remove_r(<[reent]>, <[filename]>)
char *<[reent]>;
char *<[filename]>;
DESCRIPTION
Use <<remove>> to dissolve the association between a particular
filename (the string at <[filename]>) and the file it represents.
After calling <<remove>> with a particular filename, you will no
longer be able to open the file by that name.
In this implementation, you may use <<remove>> on an open file without
error; existing file descriptors for the file will continue to access
the file's data until the program using them closes the file.
The alternate function <<_remove_r>> is a reentrant version. The
extra argument <[reent]> is a pointer to a reentrancy structure.
RETURNS
<<remove>> returns <<0>> if it succeeds, <<-1>> if it fails.
PORTABILITY
ANSI C requires <<remove>>, but only specifies that the result on
failure be nonzero. The behavior of <<remove>> when you call it on an
open file may vary among implementations.
Supporting OS subroutine required: <<unlink>>.
*/
#include <stdio.h>
int
_remove_r (ptr, filename)
struct _reent *ptr;
_CONST char *filename;
{
if (_unlink_r (ptr, filename) == -1)
return -1;
return 0;
}
#ifndef _REENT_ONLY
int
remove (filename)
_CONST char *filename;
{
return _remove_r (_REENT, filename);
}
#endif