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linux
linux-davinci
Commits
3eac8778
Commit
3eac8778
authored
Apr 07, 2009
by
Al Viro
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autofs4: use memchr() in invalid_string()
Signed-off-by:
Al Viro
<
viro@zeniv.linux.org.uk
>
parent
66672fef
Changes
1
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1 changed file
with
4 additions
and
6 deletions
+4
-6
fs/autofs4/dev-ioctl.c
fs/autofs4/dev-ioctl.c
+4
-6
No files found.
fs/autofs4/dev-ioctl.c
View file @
3eac8778
...
...
@@ -54,10 +54,9 @@ static int check_name(const char *name)
* Check a string doesn't overrun the chunk of
* memory we copied from user land.
*/
static
int
invalid_str
(
char
*
str
,
void
*
end
)
static
int
invalid_str
(
char
*
str
,
size_t
size
)
{
while
((
void
*
)
str
<=
end
)
if
(
!*
str
++
)
if
(
memchr
(
str
,
0
,
size
))
return
0
;
return
-
EINVAL
;
}
...
...
@@ -138,8 +137,7 @@ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
}
if
(
param
->
size
>
sizeof
(
*
param
))
{
err
=
invalid_str
(
param
->
path
,
(
void
*
)
((
size_t
)
param
+
param
->
size
));
err
=
invalid_str
(
param
->
path
,
param
->
size
-
sizeof
(
*
param
));
if
(
err
)
{
AUTOFS_WARN
(
"path string terminator missing for cmd(0x%08x)"
,
...
...
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