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Administrator
Magisk
Commits
47225592
Commit
47225592
authored
Feb 05, 2017
by
topjohnwu
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Auto switch to pseudo enforced if permissive
parent
6d3ac2aa
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Showing
3 changed files
with
41 additions
and
4 deletions
+41
-4
hide.c
jni/magiskhide/hide.c
+2
-0
magiskhide.h
jni/magiskhide/magiskhide.h
+6
-3
util.c
jni/magiskhide/util.c
+33
-1
No files found.
jni/magiskhide/hide.c
View file @
47225592
...
...
@@ -12,6 +12,8 @@ int hideMagisk() {
// Termination called
if
(
pid
==
-
1
)
break
;
manage_selinux
();
snprintf
(
buffer
,
sizeof
(
buffer
),
"/proc/%d/ns/mnt"
,
pid
);
if
((
fd
=
open
(
buffer
,
O_RDONLY
))
==
-
1
)
continue
;
// Maybe process died..
if
(
setns
(
fd
,
0
)
==
-
1
)
{
...
...
jni/magiskhide/magiskhide.h
View file @
47225592
...
...
@@ -21,6 +21,8 @@
#define LOGFILE "/cache/magisk.log"
#define HIDELIST "/magisk/.core/magiskhide/hidelist"
#define DUMMYPATH "/dev/magisk/dummy"
#define ENFORCE_FILE "/sys/fs/selinux/enforce"
#define SEPOLICY_INJECT "/data/magisk/sepolicy-inject"
// Main thread
void
monitor_proc
();
...
...
@@ -38,6 +40,7 @@ char **file_to_str_arr(FILE *fp, int *size);
void
read_namespace
(
const
int
pid
,
char
*
target
,
const
size_t
size
);
void
lazy_unmount
(
const
char
*
mountpoint
);
void
run_as_daemon
();
void
manage_selinux
();
// Global variable sharing through process/threads
extern
FILE
*
logfile
;
...
...
jni/magiskhide/util.c
View file @
47225592
...
...
@@ -57,3 +57,35 @@ void run_as_daemon() {
exit
(
0
);
}
}
void
manage_selinux
()
{
char
*
argv
[]
=
{
SEPOLICY_INJECT
,
"--live"
,
"permissive *"
,
NULL
};
char
str
[
20
];
int
fd
,
ret
;
fd
=
open
(
ENFORCE_FILE
,
O_RDONLY
);
if
(
fd
<
0
)
return
;
ret
=
read
(
fd
,
str
,
20
);
close
(
fd
);
if
(
ret
<
1
)
return
;
// Permissive
if
(
str
[
0
]
==
'0'
)
{
fprintf
(
logfile
,
"MagiskHide: Permissive detected, switching to pseudo enforced
\n
"
);
fd
=
open
(
ENFORCE_FILE
,
O_RDWR
);
if
(
fd
<
0
)
return
;
ret
=
write
(
fd
,
"1"
,
1
);
close
(
fd
);
if
(
ret
<
1
)
return
;
switch
(
fork
())
{
case
-
1
:
return
;
case
0
:
execvp
(
argv
[
0
],
argv
);
default:
return
;
}
}
}
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