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Administrator
Magisk
Commits
d81ccde5
Commit
d81ccde5
authored
Sep 20, 2019
by
topjohnwu
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Pretty print dtb content
parent
e8581b4a
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1 changed file
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79 additions
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16 deletions
+79
-16
dtb.cpp
native/jni/magiskboot/dtb.cpp
+79
-16
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native/jni/magiskboot/dtb.cpp
View file @
d81ccde5
...
@@ -5,36 +5,99 @@ extern "C" {
...
@@ -5,36 +5,99 @@ extern "C" {
#include <libfdt.h>
#include <libfdt.h>
}
}
#include <utils.h>
#include <utils.h>
#include <bitset>
#include "magiskboot.h"
#include "magiskboot.h"
#include "format.h"
#include "format.h"
static
void
print_props
(
const
void
*
fdt
,
int
node
,
int
depth
)
{
using
namespace
std
;
constexpr
int
MAX_DEPTH
=
32
;
static
bitset
<
MAX_DEPTH
>
depth_set
;
static
void
pretty_node
(
int
depth
)
{
if
(
depth
==
0
)
return
;
for
(
int
i
=
0
;
i
<
depth
-
1
;
++
i
)
{
if
(
depth_set
[
i
])
printf
(
"│ "
);
else
printf
(
" "
);
}
if
(
depth_set
[
depth
-
1
])
printf
(
"├── "
);
else
printf
(
"└── "
);
}
static
void
pretty_prop
(
int
depth
)
{
for
(
int
i
=
0
;
i
<
depth
;
++
i
)
{
if
(
depth_set
[
i
])
printf
(
"│ "
);
else
printf
(
" "
);
}
if
(
depth_set
[
depth
])
printf
(
"│ "
);
else
printf
(
" "
);
}
static
void
print_node
(
const
void
*
fdt
,
int
node
=
0
,
int
depth
=
0
)
{
// Print node itself
pretty_node
(
depth
);
printf
(
"#%d: %s
\n
"
,
node
,
fdt_get_name
(
fdt
,
node
,
nullptr
));
// Print properties
depth_set
[
depth
]
=
fdt_first_subnode
(
fdt
,
node
)
>=
0
;
int
prop
;
int
prop
;
fdt_for_each_property_offset
(
prop
,
fdt
,
node
)
{
fdt_for_each_property_offset
(
prop
,
fdt
,
node
)
{
for
(
int
i
=
0
;
i
<
depth
;
++
i
)
printf
(
" "
);
pretty_prop
(
depth
);
printf
(
" "
);
int
size
;
int
size
;
const
char
*
name
;
const
char
*
name
;
const
char
*
value
=
(
char
*
)
fdt_getprop_by_offset
(
fdt
,
prop
,
&
name
,
&
size
);
auto
value
=
static_cast
<
const
char
*>
(
fdt_getprop_by_offset
(
fdt
,
prop
,
&
name
,
&
size
));
printf
(
"[%s]: [%s]
\n
"
,
name
,
value
);
bool
is_str
=
!
(
size
>
1
&&
value
[
0
]
==
0
);
if
(
is_str
)
{
// Scan through value to see if printable
for
(
int
i
=
0
;
i
<
size
;
++
i
)
{
char
c
=
value
[
i
];
if
(
i
==
size
-
1
)
{
// Make sure null terminate
is_str
=
c
==
'\0'
;
}
else
if
((
c
>
0
&&
c
<
32
)
||
c
>=
127
)
{
is_str
=
false
;
break
;
}
}
}
if
(
is_str
)
{
printf
(
"[%s]: [%s]
\n
"
,
name
,
value
);
}
else
{
printf
(
"[%s]: <bytes>(%d)
\n
"
,
name
,
size
);
}
}
}
}
static
void
print_subnode
(
const
void
*
fdt
,
int
parent
,
int
depth
)
{
// Recursive
int
node
;
if
(
depth_set
[
depth
])
{
fdt_for_each_subnode
(
node
,
fdt
,
parent
)
{
int
child
;
for
(
int
i
=
0
;
i
<
depth
;
++
i
)
printf
(
" "
);
int
prev
=
-
1
;
printf
(
"#%d: %s
\n
"
,
node
,
fdt_get_name
(
fdt
,
node
,
NULL
));
fdt_for_each_subnode
(
child
,
fdt
,
node
)
{
print_props
(
fdt
,
node
,
depth
);
if
(
prev
>=
0
)
print_subnode
(
fdt
,
node
,
depth
+
1
);
print_node
(
fdt
,
prev
,
depth
+
1
);
prev
=
child
;
}
depth_set
[
depth
]
=
false
;
print_node
(
fdt
,
prev
,
depth
+
1
);
}
}
}
}
static
int
find_fstab
(
const
void
*
fdt
,
int
parent
)
{
static
int
find_fstab
(
const
void
*
fdt
,
int
parent
)
{
int
node
,
fstab
;
int
node
,
fstab
;
fdt_for_each_subnode
(
node
,
fdt
,
parent
)
{
fdt_for_each_subnode
(
node
,
fdt
,
parent
)
{
if
(
strcmp
(
fdt_get_name
(
fdt
,
node
,
NULL
),
"fstab"
)
==
0
)
if
(
strcmp
(
fdt_get_name
(
fdt
,
node
,
nullptr
),
"fstab"
)
==
0
)
return
node
;
return
node
;
fstab
=
find_fstab
(
fdt
,
node
);
fstab
=
find_fstab
(
fdt
,
node
);
if
(
fstab
!=
-
1
)
if
(
fstab
!=
-
1
)
...
@@ -54,7 +117,7 @@ static void dtb_dump(const char *file) {
...
@@ -54,7 +117,7 @@ static void dtb_dump(const char *file) {
if
(
memcmp
(
dtb
+
i
,
DTB_MAGIC
,
4
)
==
0
)
{
if
(
memcmp
(
dtb
+
i
,
DTB_MAGIC
,
4
)
==
0
)
{
fdt
=
dtb
+
i
;
fdt
=
dtb
+
i
;
fprintf
(
stderr
,
"Dumping dtb.%04d
\n
"
,
dtb_num
++
);
fprintf
(
stderr
,
"Dumping dtb.%04d
\n
"
,
dtb_num
++
);
print_
subnode
(
fdt
,
0
,
0
);
print_
node
(
fdt
);
}
}
}
}
fprintf
(
stderr
,
"
\n
"
);
fprintf
(
stderr
,
"
\n
"
);
...
@@ -81,7 +144,7 @@ static void dtb_patch(const char *file, int patch) {
...
@@ -81,7 +144,7 @@ static void dtb_patch(const char *file, int patch) {
fprintf
(
stderr
,
"Found fstab in dtb.%04d
\n
"
,
dtb_num
++
);
fprintf
(
stderr
,
"Found fstab in dtb.%04d
\n
"
,
dtb_num
++
);
int
block
;
int
block
;
fdt_for_each_subnode
(
block
,
fdt
,
fstab
)
{
fdt_for_each_subnode
(
block
,
fdt
,
fstab
)
{
fprintf
(
stderr
,
"Found block [%s] in fstab
\n
"
,
fdt_get_name
(
fdt
,
block
,
NULL
));
fprintf
(
stderr
,
"Found block [%s] in fstab
\n
"
,
fdt_get_name
(
fdt
,
block
,
nullptr
));
uint32_t
value_size
;
uint32_t
value_size
;
void
*
value
=
(
void
*
)
fdt_getprop
(
fdt
,
block
,
"fsmgr_flags"
,
(
int
*
)
&
value_size
);
void
*
value
=
(
void
*
)
fdt_getprop
(
fdt
,
block
,
"fsmgr_flags"
,
(
int
*
)
&
value_size
);
if
(
patch
)
{
if
(
patch
)
{
...
...
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