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authorThe Android Open Source Project2009-03-03 20:29:04 -0600
committerThe Android Open Source Project2009-03-03 20:29:04 -0600
commite54eebbf1a908d65ee8cf80bab62821c05666d70 (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /cpio
parenta1e1c1b106423de09bc918502e7a51d4ffe5a4ae (diff)
downloadplatform-system-core-e54eebbf1a908d65ee8cf80bab62821c05666d70.tar.gz
platform-system-core-e54eebbf1a908d65ee8cf80bab62821c05666d70.tar.xz
platform-system-core-e54eebbf1a908d65ee8cf80bab62821c05666d70.zip
auto import from //depot/cupcake/@135843
Diffstat (limited to 'cpio')
-rw-r--r--cpio/Android.mk13
-rw-r--r--cpio/mkbootfs.c261
2 files changed, 0 insertions, 274 deletions
diff --git a/cpio/Android.mk b/cpio/Android.mk
deleted file mode 100644
index 8d01852b0..000000000
--- a/cpio/Android.mk
+++ /dev/null
@@ -1,13 +0,0 @@
1# Copyright 2005 The Android Open Source Project
2
3LOCAL_PATH:= $(call my-dir)
4include $(CLEAR_VARS)
5
6LOCAL_SRC_FILES := \
7 mkbootfs.c
8
9LOCAL_MODULE := mkbootfs
10
11include $(BUILD_HOST_EXECUTABLE)
12
13$(call dist-for-goals,droid,$(LOCAL_BUILT_MODULE))
diff --git a/cpio/mkbootfs.c b/cpio/mkbootfs.c
deleted file mode 100644
index f67233634..000000000
--- a/cpio/mkbootfs.c
+++ /dev/null
@@ -1,261 +0,0 @@
1
2#include <stdio.h>
3#include <stdlib.h>
4#include <unistd.h>
5#include <string.h>
6
7#include <sys/types.h>
8#include <sys/stat.h>
9#include <dirent.h>
10
11#include <stdarg.h>
12#include <fcntl.h>
13
14#include <private/android_filesystem_config.h>
15
16/* NOTES
17**
18** - see buffer-format.txt from the linux kernel docs for
19** an explanation of this file format
20** - dotfiles are ignored
21** - directories named 'root' are ignored
22** - device notes, pipes, etc are not supported (error)
23*/
24
25void die(const char *why, ...)
26{
27 va_list ap;
28
29 va_start(ap, why);
30 fprintf(stderr,"error: ");
31 vfprintf(stderr, why, ap);
32 fprintf(stderr,"\n");
33 va_end(ap);
34 exit(1);
35}
36
37static int verbose = 0;
38static int total_size = 0;
39
40static void fix_stat(const char *path, struct stat *s)
41{
42 fs_config(path, S_ISDIR(s->st_mode), &s->st_uid, &s->st_gid, &s->st_mode);
43}
44
45static void _eject(struct stat *s, char *out, int olen, char *data, unsigned datasize)
46{
47 // Nothing is special about this value, just picked something in the
48 // approximate range that was being used already, and avoiding small
49 // values which may be special.
50 static unsigned next_inode = 300000;
51
52 while(total_size & 3) {
53 total_size++;
54 putchar(0);
55 }
56
57 fix_stat(out, s);
58// fprintf(stderr, "_eject %s: mode=0%o\n", out, s->st_mode);
59
60 printf("%06x%08x%08x%08x%08x%08x%08x"
61 "%08x%08x%08x%08x%08x%08x%08x%s%c",
62 0x070701,
63 next_inode++, // s.st_ino,
64 s->st_mode,
65 0, // s.st_uid,
66 0, // s.st_gid,
67 1, // s.st_nlink,
68 0, // s.st_mtime,
69 datasize,
70 0, // volmajor
71 0, // volminor
72 0, // devmajor
73 0, // devminor,
74 olen + 1,
75 0,
76 out,
77 0
78 );
79
80 total_size += 6 + 8*13 + olen + 1;
81
82 if(strlen(out) != olen) die("ACK!");
83
84 while(total_size & 3) {
85 total_size++;
86 putchar(0);
87 }
88
89 if(datasize) {
90 fwrite(data, datasize, 1, stdout);
91 total_size += datasize;
92 }
93}
94
95static void _eject_trailer()
96{
97 struct stat s;
98 memset(&s, 0, sizeof(s));
99 _eject(&s, "TRAILER!!!", 10, 0, 0);
100
101 while(total_size & 0xff) {
102 total_size++;
103 putchar(0);
104 }
105}
106
107static void _archive(char *in, char *out, int ilen, int olen);
108
109static int compare(const void* a, const void* b) {
110 return strcmp(*(const char**)a, *(const char**)b);
111}
112
113static void _archive_dir(char *in, char *out, int ilen, int olen)
114{
115 int i, t;
116 DIR *d;
117 struct dirent *de;
118
119 if(verbose) {
120 fprintf(stderr,"_archive_dir('%s','%s',%d,%d)\n",
121 in, out, ilen, olen);
122 }
123
124 d = opendir(in);
125 if(d == 0) die("cannot open directory '%s'", in);
126
127 int size = 32;
128 int entries = 0;
129 char** names = malloc(size * sizeof(char*));
130 if (names == NULL) {
131 fprintf(stderr, "failed to allocate dir names array (size %d)\n", size);
132 exit(1);
133 }
134
135 while((de = readdir(d)) != 0){
136 /* xxx: feature? maybe some dotfiles are okay */
137 if(de->d_name[0] == '.') continue;
138
139 /* xxx: hack. use a real exclude list */
140 if(!strcmp(de->d_name, "root")) continue;
141
142 if (entries >= size) {
143 size *= 2;
144 names = realloc(names, size * sizeof(char*));
145 if (names == NULL) {
146 fprintf(stderr, "failed to reallocate dir names array (size %d)\n",
147 size);
148 exit(1);
149 }
150 }
151 names[entries] = strdup(de->d_name);
152 if (names[entries] == NULL) {
153 fprintf(stderr, "failed to strdup name \"%s\"\n",
154 de->d_name);
155 exit(1);
156 }
157 ++entries;
158 }
159
160 qsort(names, entries, sizeof(char*), compare);
161
162 for (i = 0; i < entries; ++i) {
163 t = strlen(names[i]);
164 in[ilen] = '/';
165 memcpy(in + ilen + 1, names[i], t + 1);
166
167 if(olen > 0) {
168 out[olen] = '/';
169 memcpy(out + olen + 1, names[i], t + 1);
170 _archive(in, out, ilen + t + 1, olen + t + 1);
171 } else {
172 memcpy(out, names[i], t + 1);
173 _archive(in, out, ilen + t + 1, t);
174 }
175
176 in[ilen] = 0;
177 out[olen] = 0;
178
179 free(names[i]);
180 }
181 free(names);
182}
183
184static void _archive(char *in, char *out, int ilen, int olen)
185{
186 struct stat s;
187
188 if(verbose) {
189 fprintf(stderr,"_archive('%s','%s',%d,%d)\n",
190 in, out, ilen, olen);
191 }
192
193 if(lstat(in, &s)) die("could not stat '%s'\n", in);
194
195 if(S_ISREG(s.st_mode)){
196 char *tmp;
197 int fd;
198
199 fd = open(in, O_RDONLY);
200 if(fd < 0) die("cannot open '%s' for read", in);
201
202 tmp = (char*) malloc(s.st_size);
203 if(tmp == 0) die("cannot allocate %d bytes", s.st_size);
204
205 if(read(fd, tmp, s.st_size) != s.st_size) {
206 die("cannot read %d bytes", s.st_size);
207 }
208
209 _eject(&s, out, olen, tmp, s.st_size);
210
211 free(tmp);
212 close(fd);
213 } else if(S_ISDIR(s.st_mode)) {
214 _eject(&s, out, olen, 0, 0);
215 _archive_dir(in, out, ilen, olen);
216 } else if(S_ISLNK(s.st_mode)) {
217 char buf[1024];
218 int size;
219 size = readlink(in, buf, 1024);
220 if(size < 0) die("cannot read symlink '%s'", in);
221 _eject(&s, out, olen, buf, size);
222 } else {
223 die("Unknown '%s' (mode %d)?\n", in, s.st_mode);
224 }
225}
226
227void archive(const char *start, const char *prefix)
228{
229 char in[8192];
230 char out[8192];
231
232 strcpy(in, start);
233 strcpy(out, prefix);
234
235 _archive_dir(in, out, strlen(in), strlen(out));
236}
237
238int main(int argc, char *argv[])
239{
240 argc--;
241 argv++;
242
243 if(argc == 0) die("no directories to process?!");
244
245 while(argc-- > 0){
246 char *x = strchr(*argv, '=');
247 if(x != 0) {
248 *x++ = 0;
249 } else {
250 x = "";
251 }
252
253 archive(*argv, x);
254
255 argv++;
256 }
257
258 _eject_trailer();
259
260 return 0;
261}