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Clea OS
bsp
nxp
linux-seco-imx
Commits
c5317167
Commit
c5317167
authored
8 years ago
by
Al Viro
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proc: switch auxv to use of __mem_open()
Signed-off-by:
Al Viro
<
viro@zeniv.linux.org.uk
>
parent
91fff9b3
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Changes
1
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1 changed file
fs/proc/base.c
+26
-19
26 additions, 19 deletions
fs/proc/base.c
with
26 additions
and
19 deletions
fs/proc/base.c
+
26
−
19
View file @
c5317167
...
@@ -400,23 +400,6 @@ static const struct file_operations proc_pid_cmdline_ops = {
...
@@ -400,23 +400,6 @@ static const struct file_operations proc_pid_cmdline_ops = {
.
llseek
=
generic_file_llseek
,
.
llseek
=
generic_file_llseek
,
};
};
static
int
proc_pid_auxv
(
struct
seq_file
*
m
,
struct
pid_namespace
*
ns
,
struct
pid
*
pid
,
struct
task_struct
*
task
)
{
struct
mm_struct
*
mm
=
mm_access
(
task
,
PTRACE_MODE_READ_FSCREDS
);
if
(
mm
&&
!
IS_ERR
(
mm
))
{
unsigned
int
nwords
=
0
;
do
{
nwords
+=
2
;
}
while
(
mm
->
saved_auxv
[
nwords
-
2
]
!=
0
);
/* AT_NULL */
seq_write
(
m
,
mm
->
saved_auxv
,
nwords
*
sizeof
(
mm
->
saved_auxv
[
0
]));
mmput
(
mm
);
return
0
;
}
else
return
PTR_ERR
(
mm
);
}
#ifdef CONFIG_KALLSYMS
#ifdef CONFIG_KALLSYMS
/*
/*
* Provides a wchan file via kallsyms in a proper one-value-per-file format.
* Provides a wchan file via kallsyms in a proper one-value-per-file format.
...
@@ -1014,6 +997,30 @@ static const struct file_operations proc_environ_operations = {
...
@@ -1014,6 +997,30 @@ static const struct file_operations proc_environ_operations = {
.
release
=
mem_release
,
.
release
=
mem_release
,
};
};
static
int
auxv_open
(
struct
inode
*
inode
,
struct
file
*
file
)
{
return
__mem_open
(
inode
,
file
,
PTRACE_MODE_READ_FSCREDS
);
}
static
ssize_t
auxv_read
(
struct
file
*
file
,
char
__user
*
buf
,
size_t
count
,
loff_t
*
ppos
)
{
struct
mm_struct
*
mm
=
file
->
private_data
;
unsigned
int
nwords
=
0
;
do
{
nwords
+=
2
;
}
while
(
mm
->
saved_auxv
[
nwords
-
2
]
!=
0
);
/* AT_NULL */
return
simple_read_from_buffer
(
buf
,
count
,
ppos
,
mm
->
saved_auxv
,
nwords
*
sizeof
(
mm
->
saved_auxv
[
0
]));
}
static
const
struct
file_operations
proc_auxv_operations
=
{
.
open
=
auxv_open
,
.
read
=
auxv_read
,
.
llseek
=
generic_file_llseek
,
.
release
=
mem_release
,
};
static
ssize_t
oom_adj_read
(
struct
file
*
file
,
char
__user
*
buf
,
size_t
count
,
static
ssize_t
oom_adj_read
(
struct
file
*
file
,
char
__user
*
buf
,
size_t
count
,
loff_t
*
ppos
)
loff_t
*
ppos
)
{
{
...
@@ -2822,7 +2829,7 @@ static const struct pid_entry tgid_base_stuff[] = {
...
@@ -2822,7 +2829,7 @@ static const struct pid_entry tgid_base_stuff[] = {
DIR
(
"net"
,
S_IRUGO
|
S_IXUGO
,
proc_net_inode_operations
,
proc_net_operations
),
DIR
(
"net"
,
S_IRUGO
|
S_IXUGO
,
proc_net_inode_operations
,
proc_net_operations
),
#endif
#endif
REG
(
"environ"
,
S_IRUSR
,
proc_environ_operations
),
REG
(
"environ"
,
S_IRUSR
,
proc_environ_operations
),
ONE
(
"auxv"
,
S_IRUSR
,
proc_
pid_
auxv
),
REG
(
"auxv"
,
S_IRUSR
,
proc_auxv
_operations
),
ONE
(
"status"
,
S_IRUGO
,
proc_pid_status
),
ONE
(
"status"
,
S_IRUGO
,
proc_pid_status
),
ONE
(
"personality"
,
S_IRUSR
,
proc_pid_personality
),
ONE
(
"personality"
,
S_IRUSR
,
proc_pid_personality
),
ONE
(
"limits"
,
S_IRUGO
,
proc_pid_limits
),
ONE
(
"limits"
,
S_IRUGO
,
proc_pid_limits
),
...
@@ -3210,7 +3217,7 @@ static const struct pid_entry tid_base_stuff[] = {
...
@@ -3210,7 +3217,7 @@ static const struct pid_entry tid_base_stuff[] = {
DIR
(
"net"
,
S_IRUGO
|
S_IXUGO
,
proc_net_inode_operations
,
proc_net_operations
),
DIR
(
"net"
,
S_IRUGO
|
S_IXUGO
,
proc_net_inode_operations
,
proc_net_operations
),
#endif
#endif
REG
(
"environ"
,
S_IRUSR
,
proc_environ_operations
),
REG
(
"environ"
,
S_IRUSR
,
proc_environ_operations
),
ONE
(
"auxv"
,
S_IRUSR
,
proc_
pid_
auxv
),
REG
(
"auxv"
,
S_IRUSR
,
proc_auxv
_operations
),
ONE
(
"status"
,
S_IRUGO
,
proc_pid_status
),
ONE
(
"status"
,
S_IRUGO
,
proc_pid_status
),
ONE
(
"personality"
,
S_IRUSR
,
proc_pid_personality
),
ONE
(
"personality"
,
S_IRUSR
,
proc_pid_personality
),
ONE
(
"limits"
,
S_IRUGO
,
proc_pid_limits
),
ONE
(
"limits"
,
S_IRUGO
,
proc_pid_limits
),
...
...
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