Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Contribute to GitLab
Sign in / Register
Toggle navigation
M
Magisk
Project
Project
Details
Activity
Cycle Analytics
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Charts
Issues
0
Issues
0
List
Board
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Charts
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Charts
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
Administrator
Magisk
Commits
8c8a63eb
Commit
8c8a63eb
authored
Sep 14, 2017
by
topjohnwu
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
Use external functions in init
Don't reinvent the wheel
parent
e5e34797
Hide whitespace changes
Inline
Side-by-side
Showing
2 changed files
with
16 additions
and
28 deletions
+16
-28
Android.mk
jni/Android.mk
+5
-1
magiskinit.c
jni/magiskinit.c
+11
-27
No files found.
jni/Android.mk
View file @
8c8a63eb
...
@@ -94,7 +94,11 @@ include $(BUILD_EXECUTABLE)
...
@@ -94,7 +94,11 @@ include $(BUILD_EXECUTABLE)
ifeq ($(TARGET_ARCH_ABI), arm64-v8a)
ifeq ($(TARGET_ARCH_ABI), arm64-v8a)
include $(CLEAR_VARS)
include $(CLEAR_VARS)
LOCAL_MODULE := magiskinit
LOCAL_MODULE := magiskinit
LOCAL_SRC_FILES := magiskinit.c
LOCAL_C_INCLUDES := jni/include
LOCAL_SRC_FILES := \
magiskinit.c \
magiskboot/boot_utils.c \
utils/xwrap.c
LOCAL_LDFLAGS := -static
LOCAL_LDFLAGS := -static
include $(BUILD_EXECUTABLE)
include $(BUILD_EXECUTABLE)
endif
endif
...
...
jni/magiskinit.c
View file @
8c8a63eb
...
@@ -10,6 +10,7 @@
...
@@ -10,6 +10,7 @@
#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <unistd.h>
#include <string.h>
#include <string.h>
#include <dirent.h>
#include <dirent.h>
...
@@ -34,21 +35,9 @@ struct device {
...
@@ -34,21 +35,9 @@ struct device {
char
path
[
64
];
char
path
[
64
];
};
};
static
void
mmap_ro
(
const
char
*
filename
,
void
**
buf
,
size_t
*
size
)
{
extern
void
mmap_ro
(
const
char
*
filename
,
void
**
buf
,
size_t
*
size
);
int
fd
=
open
(
filename
,
O_RDONLY
);
extern
void
mmap_rw
(
const
char
*
filename
,
void
**
buf
,
size_t
*
size
);
*
size
=
lseek
(
fd
,
0
,
SEEK_END
);
extern
void
*
patch_init_rc
(
char
*
data
,
uint32_t
*
size
);
lseek
(
fd
,
0
,
SEEK_SET
);
*
buf
=
mmap
(
NULL
,
*
size
,
PROT_READ
,
MAP_SHARED
,
fd
,
0
);
close
(
fd
);
}
static
void
mmap_rw
(
const
char
*
filename
,
void
**
buf
,
size_t
*
size
)
{
int
fd
=
open
(
filename
,
O_RDWR
);
*
size
=
lseek
(
fd
,
0
,
SEEK_END
);
lseek
(
fd
,
0
,
SEEK_SET
);
*
buf
=
mmap
(
NULL
,
*
size
,
PROT_READ
|
PROT_WRITE
,
MAP_SHARED
,
fd
,
0
);
close
(
fd
);
}
static
void
clone_dir
(
int
src
,
int
dest
)
{
static
void
clone_dir
(
int
src
,
int
dest
)
{
struct
dirent
*
entry
;
struct
dirent
*
entry
;
...
@@ -245,19 +234,14 @@ static void patch_ramdisk() {
...
@@ -245,19 +234,14 @@ static void patch_ramdisk() {
}
}
}
}
munmap
(
addr
,
size
);
munmap
(
addr
,
size
);
mmap_ro
(
"/init.rc"
,
&
addr
,
&
size
);
mmap_rw
(
"/init.rc"
,
&
addr
,
&
size
);
int
fd
=
open
(
"/init.rc.patch"
,
O_WRONLY
|
O_CREAT
|
O_CLOEXEC
,
0750
);
uint32_t
new_size
=
size
;
for
(
int
i
=
0
;
i
<
size
;
++
i
)
{
void
*
init_rc
=
patch_init_rc
(
addr
,
&
new_size
);
if
(
memcmp
(
addr
+
i
,
"import"
,
6
)
==
0
)
{
write
(
fd
,
addr
,
i
);
write
(
fd
,
"import /init.magisk.rc
\n
"
,
23
);
write
(
fd
,
addr
+
i
,
size
-
i
);
close
(
fd
);
break
;
}
}
munmap
(
addr
,
size
);
munmap
(
addr
,
size
);
rename
(
"/init.rc.patch"
,
"/init.rc"
);
int
fd
=
open
(
"/init.rc"
,
O_WRONLY
|
O_TRUNC
|
O_CLOEXEC
);
write
(
fd
,
init_rc
,
new_size
);
close
(
fd
);
free
(
init_rc
);
}
}
int
main
(
int
argc
,
char
*
argv
[])
{
int
main
(
int
argc
,
char
*
argv
[])
{
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment