Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
L
linux
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Milestones
Merge Requests
0
Merge Requests
0
Analytics
Analytics
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Commits
Issue Boards
Open sidebar
Kirill Smelkov
linux
Commits
b15d45bf
Commit
b15d45bf
authored
Jul 18, 2002
by
Linus Torvalds
Browse files
Options
Browse Files
Download
Plain Diff
Merge
bk://lsm.bkbits.net/linus-2.5
into home.transmeta.com:/home/torvalds/v2.5/linux
parents
faaab2cf
853ac978
Changes
5
Show whitespace changes
Inline
Side-by-side
Showing
5 changed files
with
55 additions
and
49 deletions
+55
-49
include/linux/msg.h
include/linux/msg.h
+29
-0
include/linux/shm.h
include/linux/shm.h
+13
-0
ipc/msg.c
ipc/msg.c
+4
-30
ipc/sem.c
ipc/sem.c
+4
-3
ipc/shm.c
ipc/shm.c
+5
-16
No files found.
include/linux/msg.h
View file @
b15d45bf
...
...
@@ -63,6 +63,35 @@ struct msginfo {
#ifdef __KERNEL__
/* one msg_msg structure for each message */
struct
msg_msg
{
struct
list_head
m_list
;
long
m_type
;
int
m_ts
;
/* message text size */
struct
msg_msgseg
*
next
;
/* the actual message follows immediately */
};
#define DATALEN_MSG (PAGE_SIZE-sizeof(struct msg_msg))
#define DATALEN_SEG (PAGE_SIZE-sizeof(struct msg_msgseg))
/* one msq_queue structure for each present queue on the system */
struct
msg_queue
{
struct
kern_ipc_perm
q_perm
;
time_t
q_stime
;
/* last msgsnd time */
time_t
q_rtime
;
/* last msgrcv time */
time_t
q_ctime
;
/* last change time */
unsigned
long
q_cbytes
;
/* current number of bytes on queue */
unsigned
long
q_qnum
;
/* number of messages in queue */
unsigned
long
q_qbytes
;
/* max number of bytes on queue */
pid_t
q_lspid
;
/* pid of last msgsnd */
pid_t
q_lrpid
;
/* last receive pid */
struct
list_head
q_messages
;
struct
list_head
q_receivers
;
struct
list_head
q_senders
;
};
asmlinkage
long
sys_msgget
(
key_t
key
,
int
msgflg
);
asmlinkage
long
sys_msgsnd
(
int
msqid
,
struct
msgbuf
*
msgp
,
size_t
msgsz
,
int
msgflg
);
asmlinkage
long
sys_msgrcv
(
int
msqid
,
struct
msgbuf
*
msgp
,
size_t
msgsz
,
long
msgtyp
,
int
msgflg
);
...
...
include/linux/shm.h
View file @
b15d45bf
...
...
@@ -71,6 +71,19 @@ struct shm_info {
};
#ifdef __KERNEL__
struct
shmid_kernel
/* private to the kernel */
{
struct
kern_ipc_perm
shm_perm
;
struct
file
*
shm_file
;
int
id
;
unsigned
long
shm_nattch
;
unsigned
long
shm_segsz
;
time_t
shm_atim
;
time_t
shm_dtim
;
time_t
shm_ctim
;
pid_t
shm_cprid
;
pid_t
shm_lprid
;
};
/* shm_mode upper byte flags */
#define SHM_DEST 01000
/* segment will be destroyed on last detach */
...
...
ipc/msg.c
View file @
b15d45bf
...
...
@@ -52,34 +52,6 @@ struct msg_msgseg {
struct
msg_msgseg
*
next
;
/* the next part of the message follows immediately */
};
/* one msg_msg structure for each message */
struct
msg_msg
{
struct
list_head
m_list
;
long
m_type
;
int
m_ts
;
/* message text size */
struct
msg_msgseg
*
next
;
/* the actual message follows immediately */
};
#define DATALEN_MSG (PAGE_SIZE-sizeof(struct msg_msg))
#define DATALEN_SEG (PAGE_SIZE-sizeof(struct msg_msgseg))
/* one msq_queue structure for each present queue on the system */
struct
msg_queue
{
struct
kern_ipc_perm
q_perm
;
time_t
q_stime
;
/* last msgsnd time */
time_t
q_rtime
;
/* last msgrcv time */
time_t
q_ctime
;
/* last change time */
unsigned
long
q_cbytes
;
/* current number of bytes on queue */
unsigned
long
q_qnum
;
/* number of messages in queue */
unsigned
long
q_qbytes
;
/* max number of bytes on queue */
pid_t
q_lspid
;
/* pid of last msgsnd */
pid_t
q_lrpid
;
/* last receive pid */
struct
list_head
q_messages
;
struct
list_head
q_receivers
;
struct
list_head
q_senders
;
};
#define SEARCH_ANY 1
#define SEARCH_EQUAL 2
...
...
@@ -122,13 +94,15 @@ static int newque (key_t key, int msgflg)
msq
=
(
struct
msg_queue
*
)
kmalloc
(
sizeof
(
*
msq
),
GFP_KERNEL
);
if
(
!
msq
)
return
-
ENOMEM
;
msq
->
q_perm
.
mode
=
(
msgflg
&
S_IRWXUGO
);
msq
->
q_perm
.
key
=
key
;
id
=
ipc_addid
(
&
msg_ids
,
&
msq
->
q_perm
,
msg_ctlmni
);
if
(
id
==
-
1
)
{
kfree
(
msq
);
return
-
ENOSPC
;
}
msq
->
q_perm
.
mode
=
(
msgflg
&
S_IRWXUGO
);
msq
->
q_perm
.
key
=
key
;
msq
->
q_stime
=
msq
->
q_rtime
=
0
;
msq
->
q_ctime
=
CURRENT_TIME
;
...
...
ipc/sem.c
View file @
b15d45bf
...
...
@@ -129,6 +129,10 @@ static int newary (key_t key, int nsems, int semflg)
return
-
ENOMEM
;
}
memset
(
sma
,
0
,
size
);
sma
->
sem_perm
.
mode
=
(
semflg
&
S_IRWXUGO
);
sma
->
sem_perm
.
key
=
key
;
id
=
ipc_addid
(
&
sem_ids
,
&
sma
->
sem_perm
,
sc_semmni
);
if
(
id
==
-
1
)
{
ipc_free
(
sma
,
size
);
...
...
@@ -136,9 +140,6 @@ static int newary (key_t key, int nsems, int semflg)
}
used_sems
+=
nsems
;
sma
->
sem_perm
.
mode
=
(
semflg
&
S_IRWXUGO
);
sma
->
sem_perm
.
key
=
key
;
sma
->
sem_base
=
(
struct
sem
*
)
&
sma
[
1
];
/* sma->sem_pending = NULL; */
sma
->
sem_pending_last
=
&
sma
->
sem_pending
;
...
...
ipc/shm.c
View file @
b15d45bf
...
...
@@ -28,20 +28,6 @@
#include "util.h"
struct
shmid_kernel
/* private to the kernel */
{
struct
kern_ipc_perm
shm_perm
;
struct
file
*
shm_file
;
int
id
;
unsigned
long
shm_nattch
;
unsigned
long
shm_segsz
;
time_t
shm_atim
;
time_t
shm_dtim
;
time_t
shm_ctim
;
pid_t
shm_cprid
;
pid_t
shm_lprid
;
};
#define shm_flags shm_perm.mode
static
struct
file_operations
shm_file_operations
;
...
...
@@ -193,6 +179,10 @@ static int newseg (key_t key, int shmflg, size_t size)
shp
=
(
struct
shmid_kernel
*
)
kmalloc
(
sizeof
(
*
shp
),
GFP_USER
);
if
(
!
shp
)
return
-
ENOMEM
;
shp
->
shm_perm
.
key
=
key
;
shp
->
shm_flags
=
(
shmflg
&
S_IRWXUGO
);
sprintf
(
name
,
"SYSV%08x"
,
key
);
file
=
shmem_file_setup
(
name
,
size
);
error
=
PTR_ERR
(
file
);
...
...
@@ -203,8 +193,7 @@ static int newseg (key_t key, int shmflg, size_t size)
id
=
shm_addid
(
shp
);
if
(
id
==
-
1
)
goto
no_id
;
shp
->
shm_perm
.
key
=
key
;
shp
->
shm_flags
=
(
shmflg
&
S_IRWXUGO
);
shp
->
shm_cprid
=
current
->
pid
;
shp
->
shm_lprid
=
0
;
shp
->
shm_atim
=
shp
->
shm_dtim
=
0
;
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment