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
173
174
175
176
|
/* See LICENSE file for copyright and license details. */
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <utime.h>
#include "../fs.h"
#include "../util.h"
int cp_aflag = 0;
int cp_fflag = 0;
int cp_iflag = 0;
int cp_pflag = 0;
int cp_rflag = 0;
int cp_vflag = 0;
int cp_status = 0;
int cp_follow;
int
cp(const char *s1, const char *s2, int depth)
{
DIR *dp;
int f1, f2, flags = 0;
struct dirent *d;
struct stat st;
struct timespec times[2];
ssize_t r;
char target[PATH_MAX], ns1[PATH_MAX], ns2[PATH_MAX];
if (cp_follow == 'P' || (cp_follow == 'H' && depth))
flags |= AT_SYMLINK_NOFOLLOW;
if (fstatat(AT_FDCWD, s1, &st, flags) < 0) {
weprintf("stat %s:", s1);
cp_status = 1;
return 0;
}
if (cp_iflag && access(s2, F_OK) == 0) {
if (!confirm("overwrite '%s'? ", s2))
return 0;
}
if (cp_vflag)
printf("%s -> %s\n", s1, s2);
if (S_ISLNK(st.st_mode)) {
if ((r = readlink(s1, target, sizeof(target) - 1)) >= 0) {
target[r] = '\0';
if (cp_fflag && unlink(s2) < 0 && errno != ENOENT) {
weprintf("unlink %s:", s2);
cp_status = 1;
return 0;
} else if (symlink(target, s2) < 0) {
weprintf("symlink %s -> %s:", s2, target);
cp_status = 1;
return 0;
}
}
} else if (S_ISDIR(st.st_mode)) {
if (!cp_rflag) {
weprintf("%s is a directory\n", s1);
cp_status = 1;
return 0;
}
if (!(dp = opendir(s1))) {
weprintf("opendir %s:", s1);
cp_status = 1;
return 0;
}
if (mkdir(s2, st.st_mode) < 0 && errno != EEXIST) {
weprintf("mkdir %s:", s2);
cp_status = 1;
closedir(dp);
return 0;
}
while ((d = readdir(dp))) {
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
estrlcpy(ns1, s1, sizeof(ns1));
if (s1[strlen(s1) - 1] != '/')
estrlcat(ns1, "/", sizeof(ns1));
estrlcat(ns1, d->d_name, sizeof(ns1));
estrlcpy(ns2, s2, sizeof(ns2));
if (s2[strlen(s2) - 1] != '/')
estrlcat(ns2, "/", sizeof(ns2));
estrlcat(ns2, d->d_name, sizeof(ns2));
fnck(ns1, ns2, cp, depth + 1);
}
closedir(dp);
} else if (cp_aflag && (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode) ||
S_ISSOCK(st.st_mode) || S_ISFIFO(st.st_mode))) {
if (cp_fflag && unlink(s2) < 0 && errno != ENOENT) {
weprintf("unlink %s:", s2);
cp_status = 1;
return 0;
} else if (mknod(s2, st.st_mode, st.st_rdev) < 0) {
weprintf("mknod %s:", s2);
cp_status = 1;
return 0;
}
} else {
if ((f1 = open(s1, O_RDONLY)) < 0) {
weprintf("open %s:", s1);
cp_status = 1;
return 0;
}
if ((f2 = creat(s2, st.st_mode)) < 0 && cp_fflag) {
if (unlink(s2) < 0 && errno != ENOENT) {
weprintf("unlink %s:", s2);
cp_status = 1;
close(f1);
return 0;
}
f2 = creat(s2, st.st_mode);
}
if (f2 < 0) {
weprintf("creat %s:", s2);
cp_status = 1;
close(f1);
return 0;
}
if (concat(f1, s1, f2, s2) < 0) {
cp_status = 1;
close(f1);
close(f2);
return 0;
}
close(f1);
close(f2);
}
if (cp_aflag || cp_pflag) {
/* atime and mtime */
times[0] = st.st_atim;
times[1] = st.st_mtim;
if (utimensat(AT_FDCWD, s2, times, AT_SYMLINK_NOFOLLOW) < 0) {
weprintf("utimensat %s:", s2);
cp_status = 1;
}
/* owner and mode */
if (!S_ISLNK(st.st_mode)) {
if (chown(s2, st.st_uid, st.st_gid) < 0) {
weprintf("chown %s:", s2);
cp_status = 1;
st.st_mode &= ~(S_ISUID | S_ISGID);
}
if (chmod(s2, st.st_mode) < 0) {
weprintf("chmod %s:", s2);
cp_status = 1;
}
} else {
if (lchown(s2, st.st_uid, st.st_gid) < 0) {
weprintf("lchown %s:", s2);
cp_status = 1;
return 0;
}
}
}
return 0;
}
|
