56dc79cea0
- rewrite the semop(2) implementation so that it now conforms to the specification, including atomicity, support for blocking more than once, range checks, but also basic fairness support; - fix permissions checking; - fix missing time adjustments; - fix off-by-one errors and other bugs; - do not allocate dynamic memory for GETALL/SETALL; - add test88, which properly tests the semaphore functionality. Change-Id: I85f0d3408c0d6bba41cfb4c91a34c8b46b2a5959
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
#define _SYSTEM 1 /* get OK and negative error codes */
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#include <minix/callnr.h>
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#include <minix/com.h>
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#include <minix/config.h>
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#include <minix/ipc.h>
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#include <minix/endpoint.h>
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#include <minix/sysutil.h>
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#include <minix/const.h>
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#include <minix/type.h>
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#include <minix/syslib.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/sem.h>
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#include <sys/stat.h>
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#include <sys/queue.h>
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#include <sys/mman.h>
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#include <machine/param.h>
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#include <machine/vm.h>
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#include <machine/vmparam.h>
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#include <lib.h>
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#include <time.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <signal.h>
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#include <assert.h>
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/*
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* On NetBSD, these macros are only defined when _KERNEL is set. However,
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* since ipcs(1) uses IXSEQ_TO_IPCID, NetBSD cannot change these macros without
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* breaking the userland API. Thus, having a copy of them here is not risky.
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*/
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#define IPCID_TO_IX(id) ((id) & 0xffff)
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#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff)
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/* shm.c */
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int do_shmget(message *);
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int do_shmat(message *);
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int do_shmdt(message *);
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int do_shmctl(message *);
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int is_shm_nil(void);
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void update_refcount_and_destroy(void);
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/* sem.c */
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int do_semget(message *);
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int do_semctl(message *);
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int do_semop(message *);
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int is_sem_nil(void);
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void sem_process_event(endpoint_t, int);
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/* utility.c */
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int check_perm(struct ipc_perm *, endpoint_t, int);
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