1 | /* |
---|
2 | * Copyright (c) 1990 The Regents of the University of California. |
---|
3 | * All rights reserved. |
---|
4 | * |
---|
5 | * Redistribution and use in source and binary forms are permitted |
---|
6 | * provided that the above copyright notice and this paragraph are |
---|
7 | * duplicated in all such forms and that any documentation, |
---|
8 | * advertising materials, and other materials related to such |
---|
9 | * distribution and use acknowledge that the software was developed |
---|
10 | * by the University of California, Berkeley. The name of the |
---|
11 | * University may not be used to endorse or promote products derived |
---|
12 | * from this software without specific prior written permission. |
---|
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
---|
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
---|
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
---|
16 | */ |
---|
17 | |
---|
18 | /* |
---|
19 | FUNCTION |
---|
20 | <<remove>>---delete a file's name |
---|
21 | |
---|
22 | INDEX |
---|
23 | remove |
---|
24 | INDEX |
---|
25 | _remove_r |
---|
26 | |
---|
27 | SYNOPSIS |
---|
28 | #include <stdio.h> |
---|
29 | int remove(char *<[filename]>); |
---|
30 | |
---|
31 | int _remove_r(struct _reent *<[reent]>, char *<[filename]>); |
---|
32 | |
---|
33 | DESCRIPTION |
---|
34 | Use <<remove>> to dissolve the association between a particular |
---|
35 | filename (the string at <[filename]>) and the file it represents. |
---|
36 | After calling <<remove>> with a particular filename, you will no |
---|
37 | longer be able to open the file by that name. |
---|
38 | |
---|
39 | In this implementation, you may use <<remove>> on an open file without |
---|
40 | error; existing file descriptors for the file will continue to access |
---|
41 | the file's data until the program using them closes the file. |
---|
42 | |
---|
43 | The alternate function <<_remove_r>> is a reentrant version. The |
---|
44 | extra argument <[reent]> is a pointer to a reentrancy structure. |
---|
45 | |
---|
46 | RETURNS |
---|
47 | <<remove>> returns <<0>> if it succeeds, <<-1>> if it fails. |
---|
48 | |
---|
49 | PORTABILITY |
---|
50 | ANSI C requires <<remove>>, but only specifies that the result on |
---|
51 | failure be nonzero. The behavior of <<remove>> when you call it on an |
---|
52 | open file may vary among implementations. |
---|
53 | |
---|
54 | Supporting OS subroutine required: <<unlink>>. |
---|
55 | */ |
---|
56 | |
---|
57 | #include <_ansi.h> |
---|
58 | #include <reent.h> |
---|
59 | #include <stdio.h> |
---|
60 | |
---|
61 | int |
---|
62 | _remove_r (struct _reent *ptr, |
---|
63 | const char *filename) |
---|
64 | { |
---|
65 | if (_unlink_r (ptr, filename) == -1) |
---|
66 | return -1; |
---|
67 | |
---|
68 | return 0; |
---|
69 | } |
---|
70 | |
---|
71 | #ifndef _REENT_ONLY |
---|
72 | |
---|
73 | int |
---|
74 | remove (const char *filename) |
---|
75 | { |
---|
76 | return _remove_r (_REENT, filename); |
---|
77 | } |
---|
78 | |
---|
79 | #endif |
---|