sem.c File Reference

#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/time.h>
#include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/audit.h>
#include <linux/capability.h>
#include <linux/seq_file.h>
#include <linux/rwsem.h>
#include <linux/nsproxy.h>
#include <linux/ipc_namespace.h>
#include <asm/uaccess.h>
#include "util.h"

Go to the source code of this file.

Data Structures
struct	sem
struct	sem_queue
struct	sem_undo
struct	sem_undo_list

Macros
#define	sem_ids(ns)   ((ns)->ids[IPC_SEM_IDS])
#define	sem_unlock(sma)   ipc_unlock(&(sma)->sem_perm)
#define	sem_checkid(sma, semid)   ipc_checkid(&sma->sem_perm, semid)
#define	SEMMSL_FAST   256 /* 512 bytes on stack */
#define	SEMOPM_FAST   64 /* ~ 372 bytes on stack */
#define	sc_semmsl   sem_ctls[0]
#define	sc_semmns   sem_ctls[1]
#define	sc_semopm   sem_ctls[2]
#define	sc_semmni   sem_ctls[3]
#define	IN_WAKEUP   1

Functions
void	sem_init_ns (struct ipc_namespace *ns)
void __init	sem_init (void)
	SYSCALL_DEFINE3 (semget, key_t, key, int, nsems, int, semflg)
SYSCALL_DEFINE()	semctl (int semid, int semnum, int cmd, union semun arg)
	SYSCALL_DEFINE4 (semtimedop, int, semid, struct sembuf __user *, tsops, unsigned, nsops, const struct timespec __user *, timeout)
	SYSCALL_DEFINE3 (semop, int, semid, struct sembuf __user *, tsops, unsigned, nsops)
int	copy_semundo (unsigned long clone_flags, struct task_struct *tsk)
void	exit_sem (struct task_struct *tsk)

Macro Definition Documentation

#define IN_WAKEUP   1

Definition at line 274 of file sem.c.

#define sc_semmni   sem_ctls[3]

Definition at line 165 of file sem.c.

#define sc_semmns   sem_ctls[1]

Definition at line 163 of file sem.c.

#define sc_semmsl   sem_ctls[0]

Definition at line 162 of file sem.c.

#define sc_semopm   sem_ctls[2]

Definition at line 164 of file sem.c.

#define sem_checkid	(		sma,
			semid
	)		ipc_checkid(&sma->sem_perm, semid)

Definition at line 142 of file sem.c.

#define sem_ids

(

ns

)

((ns)->ids[IPC_SEM_IDS])

Definition at line 139 of file sem.c.

#define sem_unlock

(

sma

)

ipc_unlock(&(sma)->sem_perm)

Definition at line 141 of file sem.c.

#define SEMMSL_FAST   256 /* 512 bytes on stack */

Definition at line 150 of file sem.c.

#define SEMOPM_FAST   64 /* ~ 372 bytes on stack */

Definition at line 151 of file sem.c.

Function Documentation

int copy_semundo	(	unsigned long	clone_flags,
		struct task_struct *	tsk
	)

Definition at line 1560 of file sem.c.

void exit_sem

(

struct task_struct *

tsk

)

Definition at line 1589 of file sem.c.

void __init sem_init

(

void

)

Definition at line 185 of file sem.c.

void sem_init_ns

(

struct ipc_namespace *

ns

)

Definition at line 167 of file sem.c.

SYSCALL_DEFINE() semctl	(	int	semid,
		int	semnum,
		int	cmd,
		union semun	arg
	)

Definition at line 1123 of file sem.c.

SYSCALL_DEFINE3	(	semget	,
		key_t	,
		key	,
		int	,
		nsems	,
		int	,
		semflg
	)

Definition at line 367 of file sem.c.

SYSCALL_DEFINE3	(	semop	,
		int	,
		semid	,
		struct sembuf __user *	,
		tsops	,
		unsigned	,
		nsops
	)

Definition at line 1550 of file sem.c.

SYSCALL_DEFINE4	(	semtimedop	,
		int	,
		semid	,
		struct sembuf __user *	,
		tsops	,
		unsigned	,
		nsops	,
		const struct timespec __user *	,
		timeout
	)

Definition at line 1332 of file sem.c.