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Kirill Smelkov
linux
Commits
df428c06
Commit
df428c06
authored
Sep 03, 2003
by
Hideaki Yoshifuji
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[IPV{4,6}]: Fixing a bug that reading /proc/net/{udp,udp6} may drop some data.
parent
d2231420
Changes
1
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Showing
1 changed file
with
38 additions
and
37 deletions
+38
-37
net/ipv4/udp.c
net/ipv4/udp.c
+38
-37
No files found.
net/ipv4/udp.c
View file @
df428c06
...
@@ -1349,64 +1349,65 @@ struct proto udp_prot = {
...
@@ -1349,64 +1349,65 @@ struct proto udp_prot = {
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
#ifdef CONFIG_PROC_FS
#ifdef CONFIG_PROC_FS
static
__inline__
struct
sock
*
udp_get_bucket
(
struct
seq_file
*
seq
,
loff_t
*
pos
)
static
struct
sock
*
udp_get_first
(
struct
seq_file
*
seq
)
{
{
int
i
;
struct
sock
*
sk
;
struct
sock
*
sk
;
struct
hlist_node
*
node
;
loff_t
l
=
*
pos
;
struct
udp_iter_state
*
state
=
seq
->
private
;
struct
udp_iter_state
*
state
=
seq
->
private
;
for
(;
state
->
bucket
<
UDP_HTABLE_SIZE
;
++
state
->
bucket
)
{
for
(
state
->
bucket
=
0
;
state
->
bucket
<
UDP_HTABLE_SIZE
;
++
state
->
bucket
)
{
i
=
0
;
struct
hlist_node
*
node
;
sk_for_each
(
sk
,
node
,
&
udp_hash
[
state
->
bucket
])
{
sk_for_each
(
sk
,
node
,
&
udp_hash
[
state
->
bucket
])
{
if
(
sk
->
sk_family
!=
state
->
family
)
{
if
(
sk
->
sk_family
==
state
->
family
)
++
i
;
goto
found
;
continue
;
}
if
(
l
--
)
{
++
i
;
continue
;
}
*
pos
=
i
;
goto
out
;
}
}
}
}
sk
=
NULL
;
sk
=
NULL
;
out:
found:
return
sk
;
}
static
struct
sock
*
udp_get_next
(
struct
seq_file
*
seq
,
struct
sock
*
sk
)
{
struct
udp_iter_state
*
state
=
seq
->
private
;
do
{
sk
=
sk_next
(
sk
);
try_again:
;
}
while
(
sk
&&
sk
->
sk_family
!=
state
->
family
);
if
(
!
sk
&&
++
state
->
bucket
<
UDP_HTABLE_SIZE
)
{
sk
=
sk_head
(
&
udp_hash
[
state
->
bucket
]);
goto
try_again
;
}
return
sk
;
return
sk
;
}
}
static
struct
sock
*
udp_get_idx
(
struct
seq_file
*
seq
,
loff_t
pos
)
{
struct
sock
*
sk
=
udp_get_first
(
seq
);
if
(
sk
)
while
(
pos
&&
(
sk
=
udp_get_next
(
seq
,
sk
))
!=
NULL
)
--
pos
;
return
pos
?
NULL
:
sk
;
}
static
void
*
udp_seq_start
(
struct
seq_file
*
seq
,
loff_t
*
pos
)
static
void
*
udp_seq_start
(
struct
seq_file
*
seq
,
loff_t
*
pos
)
{
{
read_lock
(
&
udp_hash_lock
);
read_lock
(
&
udp_hash_lock
);
return
*
pos
?
udp_get_
bucket
(
seq
,
pos
)
:
(
void
*
)
1
;
return
*
pos
?
udp_get_
idx
(
seq
,
*
pos
-
1
)
:
(
void
*
)
1
;
}
}
static
void
*
udp_seq_next
(
struct
seq_file
*
seq
,
void
*
v
,
loff_t
*
pos
)
static
void
*
udp_seq_next
(
struct
seq_file
*
seq
,
void
*
v
,
loff_t
*
pos
)
{
{
struct
sock
*
sk
;
struct
sock
*
sk
;
struct
hlist_node
*
node
;
struct
udp_iter_state
*
state
;
if
(
v
==
(
void
*
)
1
)
{
sk
=
udp_get_bucket
(
seq
,
pos
);
goto
out
;
}
state
=
seq
->
private
;
sk
=
v
;
if
(
v
==
(
void
*
)
1
)
sk_for_each_continue
(
sk
,
node
)
sk
=
udp_get_idx
(
seq
,
0
);
if
(
sk
->
sk_family
==
state
->
family
)
else
goto
out
;
sk
=
udp_get_next
(
seq
,
v
);
if
(
++
state
->
bucket
>=
UDP_HTABLE_SIZE
)
goto
out
;
*
pos
=
0
;
sk
=
udp_get_bucket
(
seq
,
pos
);
out:
++*
pos
;
++*
pos
;
return
sk
;
return
sk
;
}
}
...
...
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