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Diffstat (limited to 'ipc')
-rw-r--r--ipc/compat.c13
-rw-r--r--ipc/compat_mq.c32
-rw-r--r--ipc/mq_sysctl.c18
-rw-r--r--ipc/mqueue.c6
-rw-r--r--ipc/msg.c2
5 files changed, 40 insertions, 31 deletions
diff --git a/ipc/compat.c b/ipc/compat.c
index 1048522479e5..a4695ada3275 100644
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -430,9 +430,9 @@ COMPAT_SYSCALL_DEFINE4(msgsnd, int, msqid, compat_uptr_t, msgp,
}
COMPAT_SYSCALL_DEFINE5(msgrcv, int, msqid, compat_uptr_t, msgp,
- compat_ssize_t, msgsz, long, msgtyp, int, msgflg)
+ compat_ssize_t, msgsz, compat_long_t, msgtyp, int, msgflg)
{
- return do_msgrcv(msqid, compat_ptr(msgp), (ssize_t)msgsz, msgtyp,
+ return do_msgrcv(msqid, compat_ptr(msgp), (ssize_t)msgsz, (long)msgtyp,
msgflg, compat_do_msg_fill);
}
@@ -498,7 +498,7 @@ static inline int put_compat_msqid_ds(struct msqid64_ds *m,
return err;
}
-long compat_sys_msgctl(int first, int second, void __user *uptr)
+COMPAT_SYSCALL_DEFINE3(msgctl, int, first, int, second, void __user *, uptr)
{
int err, err2;
struct msqid64_ds m64;
@@ -668,7 +668,7 @@ static inline int put_compat_shm_info(struct shm_info __user *ip,
return err;
}
-long compat_sys_shmctl(int first, int second, void __user *uptr)
+COMPAT_SYSCALL_DEFINE3(shmctl, int, first, int, second, void __user *, uptr)
{
void __user *p;
struct shmid64_ds s64;
@@ -749,8 +749,9 @@ long compat_sys_shmctl(int first, int second, void __user *uptr)
return err;
}
-long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
- unsigned nsops, const struct compat_timespec __user *timeout)
+COMPAT_SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsems,
+ unsigned, nsops,
+ const struct compat_timespec __user *, timeout)
{
struct timespec __user *ts64;
if (compat_convert_timespec(&ts64, timeout))
diff --git a/ipc/compat_mq.c b/ipc/compat_mq.c
index a9cf16378d7a..90d29f59cac6 100644
--- a/ipc/compat_mq.c
+++ b/ipc/compat_mq.c
@@ -46,9 +46,9 @@ static inline int put_compat_mq_attr(const struct mq_attr *attr,
| __put_user(attr->mq_curmsgs, &uattr->mq_curmsgs);
}
-asmlinkage long compat_sys_mq_open(const char __user *u_name,
- int oflag, compat_mode_t mode,
- struct compat_mq_attr __user *u_attr)
+COMPAT_SYSCALL_DEFINE4(mq_open, const char __user *, u_name,
+ int, oflag, compat_mode_t, mode,
+ struct compat_mq_attr __user *, u_attr)
{
void __user *p = NULL;
if (u_attr && oflag & O_CREAT) {
@@ -64,10 +64,10 @@ asmlinkage long compat_sys_mq_open(const char __user *u_name,
return sys_mq_open(u_name, oflag, mode, p);
}
-asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
- const char __user *u_msg_ptr,
- size_t msg_len, unsigned int msg_prio,
- const struct compat_timespec __user *u_abs_timeout)
+COMPAT_SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes,
+ const char __user *, u_msg_ptr,
+ compat_size_t, msg_len, unsigned int, msg_prio,
+ const struct compat_timespec __user *, u_abs_timeout)
{
struct timespec __user *u_ts;
@@ -78,10 +78,10 @@ asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
msg_prio, u_ts);
}
-asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
- char __user *u_msg_ptr,
- size_t msg_len, unsigned int __user *u_msg_prio,
- const struct compat_timespec __user *u_abs_timeout)
+COMPAT_SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes,
+ char __user *, u_msg_ptr,
+ compat_size_t, msg_len, unsigned int __user *, u_msg_prio,
+ const struct compat_timespec __user *, u_abs_timeout)
{
struct timespec __user *u_ts;
@@ -92,8 +92,8 @@ asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
u_msg_prio, u_ts);
}
-asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
- const struct compat_sigevent __user *u_notification)
+COMPAT_SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
+ const struct compat_sigevent __user *, u_notification)
{
struct sigevent __user *p = NULL;
if (u_notification) {
@@ -109,9 +109,9 @@ asmlinkage long compat_sys_mq_notify(mqd_t mqdes,
return sys_mq_notify(mqdes, p);
}
-asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
- const struct compat_mq_attr __user *u_mqstat,
- struct compat_mq_attr __user *u_omqstat)
+COMPAT_SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
+ const struct compat_mq_attr __user *, u_mqstat,
+ struct compat_mq_attr __user *, u_omqstat)
{
struct mq_attr mqstat;
struct mq_attr __user *p = compat_alloc_user_space(2 * sizeof(*p));
diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
index 383d638340b8..5bb8bfe67149 100644
--- a/ipc/mq_sysctl.c
+++ b/ipc/mq_sysctl.c
@@ -22,6 +22,16 @@ static void *get_mq(ctl_table *table)
return which;
}
+static int proc_mq_dointvec(ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ struct ctl_table mq_table;
+ memcpy(&mq_table, table, sizeof(mq_table));
+ mq_table.data = get_mq(table);
+
+ return proc_dointvec(&mq_table, write, buffer, lenp, ppos);
+}
+
static int proc_mq_dointvec_minmax(ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
@@ -33,12 +43,10 @@ static int proc_mq_dointvec_minmax(ctl_table *table, int write,
lenp, ppos);
}
#else
+#define proc_mq_dointvec NULL
#define proc_mq_dointvec_minmax NULL
#endif
-static int msg_queues_limit_min = MIN_QUEUESMAX;
-static int msg_queues_limit_max = HARD_QUEUESMAX;
-
static int msg_max_limit_min = MIN_MSGMAX;
static int msg_max_limit_max = HARD_MSGMAX;
@@ -51,9 +59,7 @@ static ctl_table mq_sysctls[] = {
.data = &init_ipc_ns.mq_queues_max,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_mq_dointvec_minmax,
- .extra1 = &msg_queues_limit_min,
- .extra2 = &msg_queues_limit_max,
+ .proc_handler = proc_mq_dointvec,
},
{
.procname = "msg_max",
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index ccf1f9fd263a..c3b31179122c 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -433,9 +433,9 @@ static int mqueue_create(struct inode *dir, struct dentry *dentry,
error = -EACCES;
goto out_unlock;
}
- if (ipc_ns->mq_queues_count >= HARD_QUEUESMAX ||
- (ipc_ns->mq_queues_count >= ipc_ns->mq_queues_max &&
- !capable(CAP_SYS_RESOURCE))) {
+
+ if (ipc_ns->mq_queues_count >= ipc_ns->mq_queues_max &&
+ !capable(CAP_SYS_RESOURCE)) {
error = -ENOSPC;
goto out_unlock;
}
diff --git a/ipc/msg.c b/ipc/msg.c
index 245db1140ad6..649853105a5d 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -901,6 +901,8 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, int msgfl
return -EINVAL;
if (msgflg & MSG_COPY) {
+ if ((msgflg & MSG_EXCEPT) || !(msgflg & IPC_NOWAIT))
+ return -EINVAL;
copy = prepare_copy(buf, min_t(size_t, bufsz, ns->msg_ctlmax));
if (IS_ERR(copy))
return PTR_ERR(copy);
generated by cgit (git 2.34.1) at 2024-05-08 17:18:12 +0000