File: remove.c

package info (click to toggle)
picolibc 1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 31,616 kB
  • sloc: ansic: 312,308; asm: 22,739; perl: 2,414; sh: 1,619; python: 1,019; pascal: 329; exp: 287; makefile: 164; xml: 40; cpp: 10
file content (70 lines) | stat: -rw-r--r-- 2,074 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
/*
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * and/or other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/*
FUNCTION
<<remove>>---delete a file's name

INDEX
	remove
INDEX
	_remove_r

SYNOPSIS
	#include <stdio.h>
	int remove(char *<[filename]>);

	int remove( 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>>.
*/

#define _DEFAULT_SOURCE
#include <_ansi.h>
#include <stdio.h>
#include <unistd.h>

int
remove (
       const char *filename)
{
  if (unlink (filename) == -1)
    return -1;

  return 0;
}