#ifndef _LINUX_SEM_H
#define _LINUX_SEM_H
-#include <linux/atomic.h>
-#include <linux/rcupdate.h>
-#include <linux/cache.h>
-#include <linux/time64.h>
#include <uapi/linux/sem.h>
struct task_struct;
-
-/* One semaphore structure for each semaphore in the system. */
-struct sem {
- int semval; /* current value */
- /*
- * PID of the process that last modified the semaphore. For
- * Linux, specifically these are:
- * - semop
- * - semctl, via SETVAL and SETALL.
- * - at task exit when performing undo adjustments (see exit_sem).
- */
- int sempid;
- spinlock_t lock; /* spinlock for fine-grained semtimedop */
- struct list_head pending_alter; /* pending single-sop operations */
- /* 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 */
-} ____cacheline_aligned_in_smp;
-
-/* One sem_array data structure for each set of semaphores in the system. */
-struct sem_array {
- struct kern_ipc_perm sem_perm; /* permissions .. see ipc.h */
- time64_t sem_ctime; /* create/last semctl() time */
- struct list_head pending_alter; /* pending operations */
- /* that alter the array */
- struct list_head pending_const; /* pending complex operations */
- /* that do not alter semvals */
- struct list_head list_id; /* undo requests on this array */
- int sem_nsems; /* no. of semaphores in array */
- int complex_count; /* pending complex operations */
- unsigned int use_global_lock;/* >0: global lock required */
-
- struct sem sems[];
-} __randomize_layout;
+struct sem_undo_list;
#ifdef CONFIG_SYSVIPC
#include <linux/uaccess.h>
#include "util.h"
+/* One semaphore structure for each semaphore in the system. */
+struct sem {
+ int semval; /* current value */
+ /*
+ * PID of the process that last modified the semaphore. For
+ * Linux, specifically these are:
+ * - semop
+ * - semctl, via SETVAL and SETALL.
+ * - at task exit when performing undo adjustments (see exit_sem).
+ */
+ int sempid;
+ spinlock_t lock; /* spinlock for fine-grained semtimedop */
+ struct list_head pending_alter; /* pending single-sop operations */
+ /* 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 */
+} ____cacheline_aligned_in_smp;
+
+/* One sem_array data structure for each set of semaphores in the system. */
+struct sem_array {
+ struct kern_ipc_perm sem_perm; /* permissions .. see ipc.h */
+ time64_t sem_ctime; /* create/last semctl() time */
+ struct list_head pending_alter; /* pending operations */
+ /* that alter the array */
+ struct list_head pending_const; /* pending complex operations */
+ /* that do not alter semvals */
+ struct list_head list_id; /* undo requests on this array */
+ int sem_nsems; /* no. of semaphores in array */
+ int complex_count; /* pending complex operations */
+ unsigned int use_global_lock;/* >0: global lock required */
+
+ struct sem sems[];
+} __randomize_layout;
/* One queue for each sleeping process in the system. */
struct sem_queue {