mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-05-01 07:12:47 +03:00
Alex Rønne Petersen
87 lines
3.1 KiB
C
Vendored
87 lines
3.1 KiB
C
Vendored
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2025 James Gritton.
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* All rights reserved.
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*
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* This software was developed at the University of Cambridge Computer
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* Laboratory with support from a grant from Google, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SYS_JAILDESC_H_
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#define _SYS_JAILDESC_H_
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#ifdef _KERNEL
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#include <sys/queue.h>
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#include <sys/selinfo.h>
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#include <sys/_lock.h>
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#include <sys/_mutex.h>
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#include <sys/_types.h>
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struct prison;
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/*-
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* struct jaildesc describes a jail descriptor, which points to a struct
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* prison. struct prison in turn has a linked list of struct jaildesc.
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*
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* Locking key:
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* (c) set on creation, remains unchanged
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* (d) jd_lock
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* (p) jd_prison->pr_mtx
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*/
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struct jaildesc {
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LIST_ENTRY(jaildesc) jd_list; /* (d,p) this prison's descs */
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struct prison *jd_prison; /* (d) the prison */
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struct mtx jd_lock;
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struct selinfo jd_selinfo; /* (d) event notification */
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unsigned jd_flags; /* (d) JDF_* flags */
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};
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/*
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* Locking macros for the jaildesc.
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*/
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#define JAILDESC_LOCK_DESTROY(jd) mtx_destroy(&(jd)->jd_lock)
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#define JAILDESC_LOCK_INIT(jd) mtx_init(&(jd)->jd_lock, "jaildesc", \
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NULL, MTX_DEF)
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#define JAILDESC_LOCK(jd) mtx_lock(&(jd)->jd_lock)
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#define JAILDESC_UNLOCK(jd) mtx_unlock(&(jd)->jd_lock)
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/*
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* Flags for the jd_flags field
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*/
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#define JDF_SELECTED 0x00000001 /* issue selwakeup() */
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#define JDF_REMOVED 0x00000002 /* jail was removed */
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#define JDF_OWNING 0x00000004 /* closing descriptor removes jail */
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int jaildesc_find(struct thread *td, int fd, struct prison **prp,
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struct ucred **ucredp);
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int jaildesc_alloc(struct thread *td, struct file **fpp, int *fdp, int owning);
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void jaildesc_set_prison(struct file *jd, struct prison *pr);
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void jaildesc_prison_cleanup(struct prison *pr);
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void jaildesc_knote(struct prison *pr, long hint);
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#endif /* _KERNEL */
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#endif /* !_SYS_JAILDESC_H_ */ |