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Diffstat (limited to 'ipc/sem.c')
-rw-r--r--ipc/sem.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/ipc/sem.c b/ipc/sem.c
index 06be75d9217a..cfd94d48a9aa 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -70,6 +70,7 @@
* The worst-case behavior is nevertheless O(N^2) for N wakeups.
*/
+#include <linux/compat.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/init.h>
@@ -104,7 +105,7 @@ struct sem {
/* that alter the semaphore */
struct list_head pending_const; /* pending single-sop operations */
/* that do not alter the semaphore*/
- time_t sem_otime; /* candidate for sem_otime */
+ time64_t sem_otime; /* candidate for sem_otime */
} ____cacheline_aligned_in_smp;
/* One sem_array data structure for each set of semaphores in the system. */
@@ -984,10 +985,10 @@ again:
static void set_semotime(struct sem_array *sma, struct sembuf *sops)
{
if (sops == NULL) {
- sma->sems[0].sem_otime = get_seconds();
+ sma->sems[0].sem_otime = ktime_get_real_seconds();
} else {
sma->sems[sops[0].sem_num].sem_otime =
- get_seconds();
+ ktime_get_real_seconds();
}
}
@@ -1214,6 +1215,7 @@ static int semctl_stat(struct ipc_namespace *ns, int semid,
int cmd, struct semid64_ds *semid64)
{
struct sem_array *sma;
+ time64_t semotime;
int id = 0;
int err;
@@ -1257,8 +1259,13 @@ static int semctl_stat(struct ipc_namespace *ns, int semid,
}
kernel_to_ipc64_perm(&sma->sem_perm, &semid64->sem_perm);
- semid64->sem_otime = get_semotime(sma);
+ semotime = get_semotime(sma);
+ semid64->sem_otime = semotime;
semid64->sem_ctime = sma->sem_ctime;
+#ifndef CONFIG_64BIT
+ semid64->sem_otime_high = semotime >> 32;
+ semid64->sem_ctime_high = sma->sem_ctime >> 32;
+#endif
semid64->sem_nsems = sma->sem_nsems;
ipc_unlock_object(&sma->sem_perm);
@@ -1704,8 +1711,10 @@ static int copy_compat_semid_to_user(void __user *buf, struct semid64_ds *in,
struct compat_semid64_ds v;
memset(&v, 0, sizeof(v));
to_compat_ipc64_perm(&v.sem_perm, &in->sem_perm);
- v.sem_otime = in->sem_otime;
- v.sem_ctime = in->sem_ctime;
+ v.sem_otime = lower_32_bits(in->sem_otime);
+ v.sem_otime_high = upper_32_bits(in->sem_otime);
+ v.sem_ctime = lower_32_bits(in->sem_ctime);
+ v.sem_ctime_high = upper_32_bits(in->sem_ctime);
v.sem_nsems = in->sem_nsems;
return copy_to_user(buf, &v, sizeof(v));
} else {
@@ -2168,7 +2177,7 @@ out_free:
}
long ksys_semtimedop(int semid, struct sembuf __user *tsops,
- unsigned int nsops, const struct timespec __user *timeout)
+ unsigned int nsops, const struct __kernel_timespec __user *timeout)
{
if (timeout) {
struct timespec64 ts;
@@ -2180,12 +2189,12 @@ long ksys_semtimedop(int semid, struct sembuf __user *tsops,
}
SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops,
- unsigned int, nsops, const struct timespec __user *, timeout)
+ unsigned int, nsops, const struct __kernel_timespec __user *, timeout)
{
return ksys_semtimedop(semid, tsops, nsops, timeout);
}
-#ifdef CONFIG_COMPAT
+#ifdef CONFIG_COMPAT_32BIT_TIME
long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems,
unsigned int nsops,
const struct compat_timespec __user *timeout)