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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/* Copyright (c) 1994 Sun Wu, Udi Manber, Burra Gopal. All Rights Reserved. */
/* The function of the program is to traverse the
direcctory tree and collect paath names.
This program is derived from the C-programming language book
Originally, the program open a directory file as a regular file. But
it won't work. We have to open a directory file using
opendir system call, and use readdir() to read each entry of the
directory.
*/
#include "autoconf.h" /* ../libtemplate/include */
#include <stdio.h>
#include <sys/types.h>
#if ISO_CHAR_SET
#include <locale.h>
#endif
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#include <sys/stat.h>
#include <fcntl.h>
#define BUFSIZE 256
#define DIRSIZE 14
#define max_list 10
#ifndef S_ISREG
#define S_ISREG(mode) (0100000&(mode))
#endif
#ifndef S_ISDIR
#define S_ISDIR(mode) (0040000&(mode))
#endif
char *file_list[max_list*2];
int fdx=0; /* index of file_List */
extern int Numfiles;
char name_buf[BUFSIZE];
void directory();
static void treewalk();
/* returns -1 if error, num of matches >= 0 otherwise */
int
recursive(argc, argv)
int argc;
char **argv;
{
int i,j;
int num = 0, ret;
for(i=0; i< argc; i++) {
strcpy(name_buf, argv[i]);
treewalk(name_buf);
if(fdx > 0) {
Numfiles = fdx;
if ((ret = exec(3, file_list)) == -1) return -1;
num += ret;
for(j=0; j<fdx; j++) {
free(file_list[j]);
}
}
fdx = 0;
}
return num;
}
/*
main(argc, argv)
int argc; char **argv;
{
char buf[BUFSIZE];
#if ISO_CHAR_SET
setlocale(LC_ALL, "");
#endif
if (argc == 1) {
strcpy(buf, ".");
treewalk(buf);
}
else
while(--argc > 0) {
strcpy(buf, *++argv);
treewalk(buf);
}
}
*/
static void
treewalk(name)
char *name;
{
struct stat stbuf;
int i;
extern void *malloc();
/* printf(" In treewalk\n"); */
if(my_lstat(name, &stbuf) == -1) {
fprintf(stderr, "permission denied or non-existent: %s\n", name);
return;
}
if ((stbuf.st_mode & S_IFMT) == S_IFLNK) {
return;
}
if (( stbuf.st_mode & S_IFMT) == S_IFDIR)
directory(name);
else {
file_list[fdx] = (char *)malloc(BUFSIZE);
strcpy(file_list[fdx++], name);
/* printf(" %s\n", name); */
if(fdx >= max_list) {
Numfiles = fdx;
exec(3, file_list);
for(i=0; i<max_list; i++) free(file_list[i]);
fdx=0;
}
}
}
void
directory(name)
char *name;
{
struct dirent *dp;
char *nbp;
DIR *dirp;
/*
printf("in directory, name= %s\n",name);
*/
nbp = name + strlen(name);
if( nbp+DIRSIZE+2 >= name+BUFSIZE ) /* name too long */
{
fprintf(stderr, "name too long: %.32s...\n", name);
return;
}
if((dirp = opendir(name)) == NULL) {
fprintf(stderr, "permission denied: %s\n", name);
return;
}
*nbp++ = '/';
*nbp = '\0';
for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
if (dp->d_name[0] == '\0' || strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..")==0)
goto CONT;
/*
printf("dp->d_name = %s\n", dp->d_name);
*/
strcpy(nbp, dp->d_name);
treewalk(name);
CONT:
;
}
closedir (dirp);
*--nbp = '\0'; /* restore name */
}
|