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Administrator
Magisk
Commits
d32b7889
Commit
d32b7889
authored
Jan 26, 2019
by
topjohnwu
Browse files
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Plain Diff
Rewrite exec_command
parent
7565ea27
Show whitespace changes
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Side-by-side
Showing
5 changed files
with
45 additions
and
86 deletions
+45
-86
bootstages.cpp
native/jni/daemon/bootstages.cpp
+10
-13
log_daemon.cpp
native/jni/daemon/log_daemon.cpp
+2
-2
img.cpp
native/jni/misc/img.cpp
+14
-14
utils.h
native/jni/utils/include/utils.h
+18
-6
misc.cpp
native/jni/utils/misc.cpp
+1
-51
No files found.
native/jni/daemon/bootstages.cpp
View file @
d32b7889
...
...
@@ -323,9 +323,8 @@ static void exec_common_script(const char* stage) {
if
(
access
(
entry
->
d_name
,
X_OK
)
==
-
1
)
continue
;
LOGI
(
"%s.d: exec [%s]
\n
"
,
stage
,
entry
->
d_name
);
int
pid
=
exec_command
(
false
,
nullptr
,
strcmp
(
stage
,
"post-fs-data"
)
?
set_path
:
set_mirror_path
,
MIRRDIR
"/system/bin/sh"
,
entry
->
d_name
,
nullptr
);
exec_t
exec
{
.
pre_exec
=
strcmp
(
stage
,
"post-fs-data"
)
?
set_path
:
set_mirror_path
};
int
pid
=
exec_command
(
exec
,
MIRRDIR
"/system/bin/sh"
,
entry
->
d_name
);
if
(
pid
!=
-
1
)
waitpid
(
pid
,
nullptr
,
0
);
}
...
...
@@ -342,9 +341,8 @@ static void exec_module_script(const char* stage) {
if
(
access
(
buf2
,
F_OK
)
==
-
1
)
continue
;
LOGI
(
"%s: exec [%s.sh]
\n
"
,
module
,
stage
);
int
pid
=
exec_command
(
false
,
nullptr
,
strcmp
(
stage
,
"post-fs-data"
)
?
set_path
:
set_mirror_path
,
MIRRDIR
"/system/bin/sh"
,
buf2
,
nullptr
);
exec_t
exec
{
.
pre_exec
=
strcmp
(
stage
,
"post-fs-data"
)
?
set_path
:
set_mirror_path
};
int
pid
=
exec_command
(
exec
,
MIRRDIR
"/system/bin/sh"
,
buf2
);
if
(
pid
!=
-
1
)
waitpid
(
pid
,
nullptr
,
0
);
}
...
...
@@ -471,7 +469,7 @@ static bool magisk_env() {
if
(
access
(
MIRRDIR
"/bin/busybox"
,
X_OK
)
==
-
1
)
return
false
;
LOGI
(
"* Setting up internal busybox"
);
exec_command_sync
(
MIRRDIR
"/bin/busybox"
,
"--install"
,
"-s"
,
BBPATH
,
nullptr
);
exec_command_sync
(
MIRRDIR
"/bin/busybox"
,
"--install"
,
"-s"
,
BBPATH
);
xsymlink
(
MIRRDIR
"/bin/busybox"
,
BBPATH
"/busybox"
);
// Disable/remove magiskhide, resetprop, and modules
...
...
@@ -557,11 +555,10 @@ static void install_apk(const char *apk) {
while
(
true
)
{
sleep
(
5
);
LOGD
(
"apk_install: attempting to install APK
\n
"
);
int
fd
=
-
1
,
pid
;
pid
=
exec_command
(
true
,
&
fd
,
nullptr
,
"/system/bin/sh"
,
"/system/bin/pm"
,
"install"
,
"-r"
,
apk
,
nullptr
);
FILE
*
res
=
fdopen
(
fd
,
"r"
);
exec_t
exec
{
.
err
=
true
,
.
fd
=
-
1
};
int
pid
=
exec_command
(
exec
,
"/system/bin/pm"
,
"install"
,
"-r"
,
apk
);
if
(
pid
!=
-
1
)
{
FILE
*
res
=
fdopen
(
exec
.
fd
,
"r"
);
bool
err
=
false
;
while
(
fgets
(
buf
,
PATH_MAX
,
res
))
{
LOGD
(
"apk_install: %s"
,
buf
);
...
...
@@ -874,7 +871,7 @@ void late_start(int client) {
// It's safe to create the folder at this point if the system didn't create it
xmkdir
(
SECURE_DIR
,
0700
);
// And reboot to make proper setup possible
exec_command_sync
(
"/system/bin/reboot"
,
nullptr
);
exec_command_sync
(
"/system/bin/reboot"
);
}
auto_start_magiskhide
();
...
...
@@ -901,7 +898,7 @@ core_only:
get_db_strings
(
&
str
,
SU_MANAGER
);
if
(
validate_manager
(
str
[
SU_MANAGER
],
0
,
nullptr
))
{
// There is no manager installed, install the stub
exec_command_sync
(
"/sbin/magiskinit"
,
"-x"
,
"manager"
,
"/data/magisk.apk"
,
nullptr
);
exec_command_sync
(
"/sbin/magiskinit"
,
"-x"
,
"manager"
,
"/data/magisk.apk"
);
install_apk
(
"/data/magisk.apk"
);
}
}
...
...
native/jni/daemon/log_daemon.cpp
View file @
d32b7889
...
...
@@ -134,7 +134,7 @@ static void log_daemon() {
// Test whether these buffers actually works
const
char
*
b
[]
=
{
"main"
,
"events"
,
"crash"
};
for
(
auto
&
buffer
:
b
)
{
if
(
exec_command_sync
(
MIRRDIR
"/system/bin/logcat"
,
"-b"
,
buffer
,
"-d"
,
"-f"
,
"/dev/null"
,
nullptr
)
==
0
)
{
if
(
exec_command_sync
(
MIRRDIR
"/system/bin/logcat"
,
"-b"
,
buffer
,
"-d"
,
"-f"
,
"/dev/null"
)
==
0
)
{
log_cmd
.
push_back
(
"-b"
);
log_cmd
.
push_back
(
buffer
);
}
...
...
@@ -183,7 +183,7 @@ static void log_daemon() {
bool
start_log_daemon
()
{
if
(
!
log_daemon_started
)
{
if
(
exec_command_sync
(
MIRRDIR
"/system/bin/logcat"
,
"-d"
,
"-f"
,
"/dev/null"
,
nullptr
)
==
0
)
{
if
(
exec_command_sync
(
MIRRDIR
"/system/bin/logcat"
,
"-d"
,
"-f"
,
"/dev/null"
)
==
0
)
{
if
(
fork_dont_care
()
==
0
)
log_daemon
();
log_daemon_started
=
true
;
...
...
native/jni/misc/img.cpp
View file @
d32b7889
...
...
@@ -61,10 +61,10 @@ static char *loopsetup(const char *img) {
}
}
if
(
lfd
<
0
)
return
NULL
;
return
nullptr
;
ffd
=
xopen
(
img
,
O_RDWR
);
if
(
ioctl
(
lfd
,
LOOP_SET_FD
,
ffd
)
==
-
1
)
return
NULL
;
return
nullptr
;
strncpy
((
char
*
)
info
.
lo_file_name
,
img
,
sizeof
(
info
.
lo_file_name
));
ioctl
(
lfd
,
LOOP_SET_STATUS64
,
&
info
);
close
(
lfd
);
...
...
@@ -122,7 +122,7 @@ int imgtool_main(int argc, char *argv[]) {
xdup2
(
out
,
STDOUT_FILENO
);
close
(
fd
);
close
(
out
);
if
(
loop
==
NULL
)
{
if
(
loop
==
nullptr
)
{
fprintf
(
stderr
,
"Cannot mount image!
\n
"
);
return
1
;
}
else
{
...
...
@@ -162,29 +162,29 @@ int create_img(const char *img, int size) {
char
size_str
[
16
];
snprintf
(
size_str
,
sizeof
(
size_str
),
"%dM"
,
size
);
if
(
access
(
"/system/bin/make_ext4fs"
,
X_OK
)
==
0
)
return
exec_command_sync
(
"/system/bin/make_ext4fs"
,
"-b"
,
"4096"
,
"-l"
,
size_str
,
img
,
NULL
);
return
exec_command_sync
(
"/system/bin/make_ext4fs"
,
"-b"
,
"4096"
,
"-l"
,
size_str
,
img
);
else
if
(
access
(
"/system/bin/mke2fs"
,
X_OK
)
==
0
)
// On Android P there is no make_ext4fs, use mke2fs
return
exec_command_sync
(
"/system/bin/mke2fs"
,
"-b"
,
"4096"
,
"-t"
,
"ext4"
,
img
,
size_str
,
NULL
);
return
exec_command_sync
(
"/system/bin/mke2fs"
,
"-b"
,
"4096"
,
"-t"
,
"ext4"
,
img
,
size_str
);
else
return
1
;
}
int
resize_img
(
const
char
*
img
,
int
size
)
{
LOGI
(
"Resize %s to %dM
\n
"
,
img
,
size
);
exec_command_sync
(
"/system/bin/e2fsck"
,
"-yf"
,
img
,
NULL
);
exec_command_sync
(
"/system/bin/e2fsck"
,
"-yf"
,
img
);
char
ss
[
16
];
snprintf
(
ss
,
sizeof
(
ss
),
"%dM"
,
size
);
return
exec_command_sync
(
"/system/bin/resize2fs"
,
img
,
ss
,
NULL
);
return
exec_command_sync
(
"/system/bin/resize2fs"
,
img
,
ss
);
}
char
*
mount_image
(
const
char
*
img
,
const
char
*
target
)
{
if
(
access
(
img
,
F_OK
)
==
-
1
||
access
(
target
,
F_OK
)
==
-
1
)
return
NULL
;
exec_command_sync
(
"/system/bin/e2fsck"
,
"-yf"
,
img
,
NULL
);
return
nullptr
;
exec_command_sync
(
"/system/bin/e2fsck"
,
"-yf"
,
img
);
char
*
device
=
loopsetup
(
img
);
if
(
device
)
xmount
(
device
,
target
,
"ext4"
,
MS_NOATIME
,
NULL
);
xmount
(
device
,
target
,
"ext4"
,
MS_NOATIME
,
nullptr
);
return
device
;
}
...
...
@@ -220,10 +220,10 @@ int merge_img(const char *source, const char *target) {
xmkdir
(
TARGET_TMP
,
0755
);
char
*
s_loop
,
*
t_loop
,
*
m_loop
;
s_loop
=
mount_image
(
source
,
SOURCE_TMP
);
if
(
s_loop
==
NULL
)
if
(
s_loop
==
nullptr
)
return
1
;
t_loop
=
mount_image
(
target
,
TARGET_TMP
);
if
(
t_loop
==
NULL
)
if
(
t_loop
==
nullptr
)
return
1
;
snprintf
(
buf
,
sizeof
(
buf
),
"%s/%s"
,
SOURCE_TMP
,
"lost+found"
);
...
...
@@ -256,7 +256,7 @@ int merge_img(const char *source, const char *target) {
create_img
(
buf
,
round_size
(
src
.
used
+
tgt
.
used
));
xmkdir
(
MERGE_TMP
,
0755
);
m_loop
=
mount_image
(
buf
,
MERGE_TMP
);
if
(
m_loop
==
NULL
)
if
(
m_loop
==
nullptr
)
return
1
;
LOGI
(
"* Merging %s + %s -> %s"
,
source
,
target
,
buf
);
...
...
@@ -288,7 +288,7 @@ int trim_img(const char *img, const char *mount, char *loop) {
umount_image
(
mount
,
loop
);
resize_img
(
img
,
new_size
);
char
*
loop2
=
mount_image
(
img
,
mount
);
if
(
loop2
==
NULL
)
if
(
loop2
==
nullptr
)
return
1
;
strcpy
(
loop
,
loop2
);
free
(
loop2
);
...
...
native/jni/utils/include/utils.h
View file @
d32b7889
...
...
@@ -138,24 +138,36 @@ void write_zero(int fd, size_t size);
#include <string>
#include <vector>
#define str_contains(s, ss) ((ss) != nullptr && (s).find(ss) != string::npos)
#define str_contains(s, ss) ((ss) != nullptr && (s).find(ss) != st
d::st
ring::npos)
#define str_starts(s, ss) ((ss) != nullptr && (s).compare(0, strlen(ss), ss) == 0)
// file.cpp
std
::
vector
<
std
::
string
>
file_to_vector
(
const
char
*
filename
);
// misc.cpp
struct
exec_t
{
bool
err
=
false
;
int
fd
=
-
2
;
void
(
*
pre_exec
)()
=
nullptr
;
const
char
**
argv
=
nullptr
;
int
(
*
fork
)()
=
xfork
;
const
char
**
argv
=
nullptr
;
};
int
exec_command
(
exec_t
&
exec
);
int
exec_command
(
bool
err
,
int
*
fd
,
void
(
*
pre_exec
)(),
const
char
**
argv
);
int
exec_command
(
bool
err
,
int
*
fd
,
void
(
*
cb
)(),
const
char
*
argv0
,
...);
template
<
class
...
Args
>
int
exec_command
(
exec_t
&
exec
,
Args
&&
...
args
)
{
const
char
*
argv
[]
=
{
args
...,
nullptr
};
exec
.
argv
=
argv
;
return
exec_command
(
exec
);
}
int
exec_command_sync
(
const
char
**
argv
);
int
exec_command_sync
(
const
char
*
argv0
,
...);
template
<
class
...
Args
>
int
exec_command_sync
(
Args
&&
...
args
)
{
const
char
*
argv
[]
=
{
args
...,
nullptr
};
return
exec_command_sync
(
argv
);
}
#endif
...
...
native/jni/utils/misc.cpp
View file @
d32b7889
...
...
@@ -195,39 +195,8 @@ int exec_command(exec_t &exec) {
exit
(
-
1
);
}
/*
fd == nullptr -> Ignore output
*fd < 0 -> Open pipe and set *fd to the read end
*fd >= 0 -> STDOUT (or STDERR) will be redirected to *fd
*pre_exec -> A callback function called after forking, before execvp
*/
int
exec_command
(
bool
err
,
int
*
fd
,
void
(
*
pre_exec
)(),
const
char
**
argv
)
{
exec_t
exec
{
.
err
=
err
,
.
fd
=
fd
?
*
fd
:
-
2
,
.
pre_exec
=
pre_exec
,
.
argv
=
argv
};
int
pid
=
exec_command
(
exec
);
if
(
fd
)
*
fd
=
exec
.
fd
;
return
pid
;
}
static
int
v_exec_command
(
bool
err
,
int
*
fd
,
void
(
*
cb
)(),
const
char
*
argv0
,
va_list
argv
)
{
// Collect va_list into vector
vector
<
const
char
*>
args
;
args
.
push_back
(
argv0
);
for
(
const
char
*
arg
=
va_arg
(
argv
,
char
*
);
arg
;
arg
=
va_arg
(
argv
,
char
*
))
args
.
push_back
(
arg
);
args
.
push_back
(
nullptr
);
int
pid
=
exec_command
(
err
,
fd
,
cb
,
args
.
data
());
return
pid
;
}
int
exec_command_sync
(
const
char
**
argv
)
{
exec_t
exec
{
.
argv
=
argv
};
exec_t
exec
{
.
argv
=
argv
};
int
pid
,
status
;
pid
=
exec_command
(
exec
);
if
(
pid
<
0
)
...
...
@@ -236,22 +205,3 @@ int exec_command_sync(const char **argv) {
return
WEXITSTATUS
(
status
);
}
int
exec_command_sync
(
const
char
*
argv0
,
...)
{
va_list
argv
;
va_start
(
argv
,
argv0
);
int
pid
,
status
;
pid
=
v_exec_command
(
false
,
nullptr
,
nullptr
,
argv0
,
argv
);
va_end
(
argv
);
if
(
pid
<
0
)
return
pid
;
waitpid
(
pid
,
&
status
,
0
);
return
WEXITSTATUS
(
status
);
}
int
exec_command
(
bool
err
,
int
*
fd
,
void
(
*
cb
)(
void
),
const
char
*
argv0
,
...)
{
va_list
argv
;
va_start
(
argv
,
argv0
);
int
pid
=
v_exec_command
(
err
,
fd
,
cb
,
argv0
,
argv
);
va_end
(
argv
);
return
pid
;
}
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