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
|
/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* describe.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "rdsquashfs.h"
static int print_name(const sqfs_tree_node_t *n)
{
char *start, *ptr, *name = sqfs_tree_node_get_path(n);
int ret;
if (name == NULL) {
perror("Recovering file path of tree node");
return -1;
}
ret = canonicalize_name(name);
assert(ret == 0);
if (strchr(name, ' ') == NULL && strchr(name, '"') == NULL) {
fputs(name, stdout);
} else {
fputc('"', stdout);
ptr = strchr(name, '"');
if (ptr != NULL) {
start = name;
do {
fwrite(start, 1, ptr - start, stdout);
fputs("\\\"", stdout);
start = ptr + 1;
ptr = strchr(start, '"');
} while (ptr != NULL);
fputs(start, stdout);
} else {
fputs(name, stdout);
}
fputc('"', stdout);
}
free(name);
return 0;
}
static void print_perm(const sqfs_tree_node_t *n)
{
printf(" 0%o %d %d", n->inode->base.mode & (~S_IFMT), n->uid, n->gid);
}
static int print_simple(const char *type, const sqfs_tree_node_t *n,
const char *extra)
{
printf("%s ", type);
if (print_name(n))
return -1;
print_perm(n);
if (extra != NULL)
printf(" %s", extra);
fputc('\n', stdout);
return 0;
}
int describe_tree(const sqfs_tree_node_t *root, const char *unpack_root)
{
const sqfs_tree_node_t *n;
switch (root->inode->base.mode & S_IFMT) {
case S_IFSOCK:
return print_simple("sock", root, NULL);
case S_IFLNK:
return print_simple("slink", root,
(const char *)root->inode->extra);
case S_IFIFO:
return print_simple("pipe", root, NULL);
case S_IFREG:
if (unpack_root == NULL)
return print_simple("file", root, NULL);
fputs("file ", stdout);
if (print_name(root))
return -1;
print_perm(root);
printf(" %s/", unpack_root);
if (print_name(root))
return -1;
fputc('\n', stdout);
break;
case S_IFCHR:
case S_IFBLK: {
char buffer[32];
sqfs_u32 devno;
if (root->inode->base.type == SQFS_INODE_EXT_BDEV ||
root->inode->base.type == SQFS_INODE_EXT_CDEV) {
devno = root->inode->data.dev_ext.devno;
} else {
devno = root->inode->data.dev.devno;
}
sprintf(buffer, "%c %d %d",
S_ISCHR(root->inode->base.mode) ? 'c' : 'b',
major(devno), minor(devno));
return print_simple("nod", root, buffer);
}
case S_IFDIR:
if (root->name[0] != '\0') {
if (print_simple("dir", root, NULL))
return -1;
}
for (n = root->children; n != NULL; n = n->next) {
if (describe_tree(n, unpack_root))
return -1;
}
break;
}
return 0;
}
|
