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nexedi
linux
Commits
531b536d
Commit
531b536d
authored
Apr 02, 2002
by
Dave Jones
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[PATCH] wrong return codes in ipc shm
We always returned success even when we had no ->vm_ops
parent
4d148125
Changes
1
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ipc/shm.c
ipc/shm.c
+5
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ipc/shm.c
View file @
531b536d
...
@@ -674,16 +674,19 @@ asmlinkage long sys_shmdt (char *shmaddr)
...
@@ -674,16 +674,19 @@ asmlinkage long sys_shmdt (char *shmaddr)
{
{
struct
mm_struct
*
mm
=
current
->
mm
;
struct
mm_struct
*
mm
=
current
->
mm
;
struct
vm_area_struct
*
shmd
,
*
shmdnext
;
struct
vm_area_struct
*
shmd
,
*
shmdnext
;
int
retval
=
-
EINVAL
;
down_write
(
&
mm
->
mmap_sem
);
down_write
(
&
mm
->
mmap_sem
);
for
(
shmd
=
mm
->
mmap
;
shmd
;
shmd
=
shmdnext
)
{
for
(
shmd
=
mm
->
mmap
;
shmd
;
shmd
=
shmdnext
)
{
shmdnext
=
shmd
->
vm_next
;
shmdnext
=
shmd
->
vm_next
;
if
(
shmd
->
vm_ops
==
&
shm_vm_ops
if
(
shmd
->
vm_ops
==
&
shm_vm_ops
&&
shmd
->
vm_start
-
(
shmd
->
vm_pgoff
<<
PAGE_SHIFT
)
==
(
ulong
)
shmaddr
)
&&
shmd
->
vm_start
-
(
shmd
->
vm_pgoff
<<
PAGE_SHIFT
)
==
(
ulong
)
shmaddr
)
{
do_munmap
(
mm
,
shmd
->
vm_start
,
shmd
->
vm_end
-
shmd
->
vm_start
);
do_munmap
(
mm
,
shmd
->
vm_start
,
shmd
->
vm_end
-
shmd
->
vm_start
);
retval
=
0
;
}
}
}
up_write
(
&
mm
->
mmap_sem
);
up_write
(
&
mm
->
mmap_sem
);
return
0
;
return
retval
;
}
}
#ifdef CONFIG_PROC_FS
#ifdef CONFIG_PROC_FS
...
...
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