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
|
Description: add -o argument to preserve ownership
Author: Markus Mayer <mmayer@mmayer.net>
See also https://android-review.googlesource.com/#/c/100312/
Upstream-Status: Inappropriate
---
system/extras/ext4_utils/make_ext4fs.c | 6 ++++++
system/extras/ext4_utils/make_ext4fs_main.c | 10 ++++++++--
2 files changed, 14 insertions(+), 2 deletions(-)
--- a/system/extras/ext4_utils/make_ext4fs_main.c
+++ b/system/extras/ext4_utils/make_ext4fs_main.c
@@ -49,13 +49,15 @@ extern struct fs_info info;
extern struct selabel_handle* selinux_android_file_context_handle(void);
+extern int preserve_owner;
+
static void usage(char *path)
{
fprintf(stderr, "%s [ -l <len> ] [ -j <journal size> ] [ -b <block_size> ]\n", basename(path));
fprintf(stderr, " [ -g <blocks per group> ] [ -i <inodes> ] [ -I <inode size> ]\n");
fprintf(stderr, " [ -L <label> ] [ -f ] [ -a <android mountpoint> ]\n");
fprintf(stderr, " [ -S file_contexts ] [ -C fs_config ] [ -T timestamp ]\n");
- fprintf(stderr, " [ -z | -s ] [ -w ] [ -c ] [ -J ] [ -v ] [ -B <block_list_file> ]\n");
+ fprintf(stderr, " [ -z | -s ] [ -w ] [ -c ] [ -J ] [ -o ] [ -v ] [ -B <block_list_file> ]\n");
fprintf(stderr, " <filename> [<directory>]\n");
}
@@ -81,7 +83,7 @@ int main(int argc, char **argv)
struct selinux_opt seopts[] = { { SELABEL_OPT_PATH, "" } };
#endif
- while ((opt = getopt(argc, argv, "l:j:b:g:i:I:L:a:S:T:C:B:fwzJsctv")) != -1) {
+ while ((opt = getopt(argc, argv, "l:j:b:g:i:I:L:a:S:T:C:B:fwzJsctov")) != -1) {
switch (opt) {
case 'l':
info.len = parse_num(optarg);
@@ -144,6 +146,10 @@ int main(int argc, char **argv)
}
#endif
break;
+ case 'o':
+ preserve_owner = 1;
+ printf("Warning: Enabling 'preserve ownership', this is an unofficial feature!\n");
+ break;
case 'v':
verbose = 1;
break;
--- a/system/extras/ext4_utils/make_ext4fs.c
+++ b/system/extras/ext4_utils/make_ext4fs.c
@@ -67,6 +67,8 @@
#endif
+int preserve_owner = 0;
+
/* TODO: Not implemented:
Allocating blocks in the same block group as the file inode
Hash or binary tree directories
@@ -185,6 +187,10 @@ static u32 build_directory_structure(con
} else {
dentries[i].mtime = fixed_time;
}
+ if (preserve_owner) {
+ dentries[i].uid = stat.st_uid;
+ dentries[i].gid = stat.st_gid;
+ }
uint64_t capabilities;
if (fs_config_func != NULL) {
#ifdef ANDROID
|
