David van Moolenbroek d62d1b661f IPC server: NetBSD sync, general improvements
- switch to the NetBSD identifier system; it is not only better, but
  also required for porting NetBSD ipcs(1) and ipcrm(1); however, it
  requires that slots not be moved, and that results in some changes;
- synchronize some other things with NetBSD: where keys are kept, as
  well as various non-permission mode flags;
- fix semctl(2) vararg retrieval and message field type;
- use SUSPEND instead of weird reply exceptions in the call table;
- fix several memory leaks and at least one missing permission check;
- improve the atomicity of semop(2) by a small amount, even though
  its atomicity is still broken at a fundamental level;
- use the new cheaper way to retrieve the current time;
- resolve all level-5 LLVM warnings.

Change-Id: I0c47aacde478b23bb77d628384aeab855a22fdbf
2016-01-13 20:32:57 +01:00

55 lines
1.3 KiB
C

#define _SYSTEM 1 /* get OK and negative error codes */
#include <minix/callnr.h>
#include <minix/com.h>
#include <minix/config.h>
#include <minix/ipc.h>
#include <minix/endpoint.h>
#include <minix/sysutil.h>
#include <minix/const.h>
#include <minix/type.h>
#include <minix/syslib.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/sem.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <machine/param.h>
#include <machine/vm.h>
#include <machine/vmparam.h>
#include <lib.h>
#include <time.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <assert.h>
/*
* On NetBSD, these macros are only defined when _KERNEL is set. However,
* since ipcs(1) uses IXSEQ_TO_IPCID, NetBSD cannot change these macros without
* breaking the userland API. Thus, having a copy of them here is not risky.
*/
#define IPCID_TO_IX(id) ((id) & 0xffff)
#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff)
int do_shmget(message *);
int do_shmat(message *);
int do_shmdt(message *);
int do_shmctl(message *);
int check_perm(struct ipc_perm *, endpoint_t, int);
void update_refcount_and_destroy(void);
int do_semget(message *);
int do_semctl(message *);
int do_semop(message *);
int is_sem_nil(void);
int is_shm_nil(void);
void sem_process_vm_notify(void);
EXTERN endpoint_t who_e;