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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
* Copyright (c) 1989, 1990, 1991 by the University of Washington
*
* For copying and distribution information, please see the file
* <copyright.h>.
*/
#include <stdio.h>
#include <pfs.h>
#include <pmachine.h>
static VLINK lfree = NULL;
int vlink_count = 0;
int vlink_max = 0;
/*
* vlalloc - allocate and initialize vlink structure
*
* VLALLOC returns a pointer to an initialized structure of type
* VLINK. If it is unable to allocate such a structure, it
* returns NULL.
*/
VLINK
vlalloc()
{
VLINK vl;
if(lfree) {
vl = lfree;
lfree = lfree->next;
}
else {
vl = (VLINK) malloc(sizeof(VLINK_ST));
if (!vl) return(NULL);
vlink_max++;
}
vlink_count++;
/* Initialize and fill in default values */
/* Since all but four are set to a zero-value,
why not just wipe it clean? */
ZERO(vl);
vl->linktype = 'L';
vl->type = stcopy("FILE");
vl->hosttype = stcopy("INTERNET-D");
vl->nametype = stcopy("ASCII");
return(vl);
}
/*
* vlfree - free a VLINK structure
*
* VLFREE takes a pointer to a VLINK structure and adds it to
* the free list for later reuse.
*/
void
vlfree(vl)
VLINK vl;
{
extern int string_count;
if(vl->dontfree) return;
/* many of these don't need to call stfree(); since a check
for pointer validity's already done before even calling
it, we can just call free() here then do one big decrement
of string_count at the end. */
if(vl->name) free(vl->name);
stfree(vl->type);
if(vl->replicas) vllfree(vl->replicas);
stfree(vl->hosttype);
if(vl->host) free(vl->host);
stfree(vl->nametype);
if(vl->filename) free(vl->filename);
if(vl->args) free(vl->args);
if(vl->lattrib) atlfree(vl->lattrib);
/* No allocation routines for f_info yet */
vl->f_info = NULL;
vl->next = lfree;
vl->previous = NULL;
lfree = vl;
vlink_count--;
string_count -= 4; /* freed name, host, filename, and args */
}
/*
* vllfree - free a VLINK structure
*
* VLLFREE takes a pointer to a VLINK structure frees it and any linked
* VLINK structures. It is used to free an entrie list of VLINK
* structures.
*/
void
vllfree(vl)
VLINK vl;
{
VLINK nxt;
while((vl != NULL) && !vl->dontfree) {
nxt = vl->next;
vlfree(vl);
vl = nxt;
}
}
|