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
|
/* SPDX-License-Identifier: GPL-3.0-or-later */
#include "mksquashfs.h"
#include "util.h"
static void print_tree(int level, tree_node_t *node)
{
tree_node_t *n;
int i;
for (i = 1; i < level; ++i) {
fputs("| ", stdout);
}
if (level)
fputs("+- ", stdout);
if (S_ISDIR(node->mode)) {
fprintf(stdout, "%s/ (%u, %u, 0%o)\n", node->name,
node->uid, node->gid, node->mode & 07777);
for (n = node->data.dir->children; n != NULL; n = n->next) {
print_tree(level + 1, n);
}
if (node->data.dir->children != NULL) {
for (i = 0; i < level; ++i)
fputs("| ", stdout);
if (level)
fputc('\n', stdout);
}
} else {
fprintf(stdout, "%s (%u, %u, 0%o)\n", node->name,
node->uid, node->gid, node->mode & 07777);
}
}
static int padd_file(sqfs_info_t *info)
{
size_t padd_sz = info->super.bytes_used % info->opt.devblksz;
uint8_t *buffer;
ssize_t ret;
if (padd_sz == 0)
return 0;
padd_sz = info->opt.devblksz - padd_sz;
buffer = calloc(1, padd_sz);
if (buffer == NULL) {
perror("padding output file to block size");
return -1;
}
ret = write_retry(info->outfd, buffer, padd_sz);
if (ret < 0) {
perror("Error padding squashfs image to page size");
free(buffer);
return -1;
}
if ((size_t)ret < padd_sz) {
fputs("Truncated write trying to padd squashfs image\n",
stderr);
return -1;
}
free(buffer);
return 0;
}
int main(int argc, char **argv)
{
int status = EXIT_FAILURE;
sqfs_info_t info;
memset(&info, 0, sizeof(info));
process_command_line(&info.opt, argc, argv);
if (sqfs_super_init(&info.super, info.opt.blksz, info.opt.def_mtime,
info.opt.compressor)) {
return EXIT_FAILURE;
}
if (id_table_init(&info.idtbl))
return EXIT_FAILURE;
info.outfd = open(info.opt.outfile, info.opt.outmode, 0644);
if (info.outfd < 0) {
perror(info.opt.outfile);
goto out_idtbl;
}
if (sqfs_super_write(&info.super, info.outfd))
goto out_outfd;
if (fstree_init(&info.fs, info.opt.blksz, info.opt.def_mtime,
info.opt.def_mode, info.opt.def_uid,
info.opt.def_gid)) {
goto out_outfd;
}
if (fstree_from_file(&info.fs, info.opt.infile))
goto out_fstree;
fstree_sort(&info.fs);
print_tree(0, info.fs.root);
info.cmp = compressor_create(info.super.compression_id, true,
info.super.block_size);
if (info.cmp == NULL) {
fputs("Error creating compressor\n", stderr);
goto out_outfd;
}
if (write_data_to_image(&info))
goto out_cmp;
if (sqfs_super_write(&info.super, info.outfd))
goto out_cmp;
if (padd_file(&info))
goto out_cmp;
status = EXIT_SUCCESS;
out_cmp:
info.cmp->destroy(info.cmp);
out_fstree:
fstree_cleanup(&info.fs);
out_outfd:
close(info.outfd);
out_idtbl:
id_table_cleanup(&info.idtbl);
return status;
}
|
