fe69291ff4
It allows a process to request that stack gap was not applied to its stacks, retroactively. Also it is possible to control the gaps in the process after exec. PR: 239894 Reviewed by: alc Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D21352
152 lines
4.9 KiB
C
152 lines
4.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2013 Hudson River Trading LLC
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* Copyright (c) 2014, 2016 The FreeBSD Foundation
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* Written by: John H. Baldwin <jhb@FreeBSD.org>
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* All rights reserved.
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*
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* Portions of this software were developed by Konstantin Belousov
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* under sponsorship from the FreeBSD Foundation.
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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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* $FreeBSD$
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*/
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#ifndef _SYS_PROCCTL_H_
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#define _SYS_PROCCTL_H_
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#ifndef _KERNEL
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#include <sys/types.h>
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#include <sys/wait.h>
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#endif
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/* MD PROCCTL verbs start at 0x10000000 */
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#define PROC_PROCCTL_MD_MIN 0x10000000
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#include <machine/procctl.h>
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#define PROC_SPROTECT 1 /* set protected state */
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#define PROC_REAP_ACQUIRE 2 /* reaping enable */
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#define PROC_REAP_RELEASE 3 /* reaping disable */
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#define PROC_REAP_STATUS 4 /* reaping status */
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#define PROC_REAP_GETPIDS 5 /* get descendants */
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#define PROC_REAP_KILL 6 /* kill descendants */
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#define PROC_TRACE_CTL 7 /* en/dis ptrace and coredumps */
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#define PROC_TRACE_STATUS 8 /* query tracing status */
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#define PROC_TRAPCAP_CTL 9 /* trap capability errors */
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#define PROC_TRAPCAP_STATUS 10 /* query trap capability status */
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#define PROC_PDEATHSIG_CTL 11 /* set parent death signal */
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#define PROC_PDEATHSIG_STATUS 12 /* get parent death signal */
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#define PROC_ASLR_CTL 13 /* en/dis ASLR */
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#define PROC_ASLR_STATUS 14 /* query ASLR status */
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#define PROC_PROTMAX_CTL 15 /* en/dis implicit PROT_MAX */
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#define PROC_PROTMAX_STATUS 16 /* query implicit PROT_MAX status */
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#define PROC_STACKGAP_CTL 17 /* en/dis stack gap on MAP_STACK */
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#define PROC_STACKGAP_STATUS 18 /* query stack gap */
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/* Operations for PROC_SPROTECT (passed in integer arg). */
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#define PPROT_OP(x) ((x) & 0xf)
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#define PPROT_SET 1
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#define PPROT_CLEAR 2
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/* Flags for PROC_SPROTECT (ORed in with operation). */
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#define PPROT_FLAGS(x) ((x) & ~0xf)
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#define PPROT_DESCEND 0x10
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#define PPROT_INHERIT 0x20
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/* Result of PREAP_STATUS (returned by value). */
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struct procctl_reaper_status {
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u_int rs_flags;
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u_int rs_children;
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u_int rs_descendants;
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pid_t rs_reaper;
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pid_t rs_pid;
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u_int rs_pad0[15];
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};
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/* struct procctl_reaper_status rs_flags */
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#define REAPER_STATUS_OWNED 0x00000001
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#define REAPER_STATUS_REALINIT 0x00000002
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struct procctl_reaper_pidinfo {
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pid_t pi_pid;
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pid_t pi_subtree;
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u_int pi_flags;
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u_int pi_pad0[15];
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};
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#define REAPER_PIDINFO_VALID 0x00000001
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#define REAPER_PIDINFO_CHILD 0x00000002
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#define REAPER_PIDINFO_REAPER 0x00000004
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struct procctl_reaper_pids {
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u_int rp_count;
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u_int rp_pad0[15];
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struct procctl_reaper_pidinfo *rp_pids;
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};
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struct procctl_reaper_kill {
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int rk_sig; /* in - signal to send */
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u_int rk_flags; /* in - REAPER_KILL flags */
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pid_t rk_subtree; /* in - subtree, if REAPER_KILL_SUBTREE */
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u_int rk_killed; /* out - count of processes successfully
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killed */
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pid_t rk_fpid; /* out - first failed pid for which error
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is returned */
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u_int rk_pad0[15];
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};
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#define REAPER_KILL_CHILDREN 0x00000001
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#define REAPER_KILL_SUBTREE 0x00000002
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#define PROC_TRACE_CTL_ENABLE 1
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#define PROC_TRACE_CTL_DISABLE 2
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#define PROC_TRACE_CTL_DISABLE_EXEC 3
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#define PROC_TRAPCAP_CTL_ENABLE 1
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#define PROC_TRAPCAP_CTL_DISABLE 2
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#define PROC_ASLR_FORCE_ENABLE 1
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#define PROC_ASLR_FORCE_DISABLE 2
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#define PROC_ASLR_NOFORCE 3
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#define PROC_ASLR_ACTIVE 0x80000000
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#define PROC_PROTMAX_FORCE_ENABLE 1
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#define PROC_PROTMAX_FORCE_DISABLE 2
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#define PROC_PROTMAX_NOFORCE 3
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#define PROC_PROTMAX_ACTIVE 0x80000000
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#define PROC_STACKGAP_ENABLE 0x0001
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#define PROC_STACKGAP_DISABLE 0x0002
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#define PROC_STACKGAP_ENABLE_EXEC 0x0004
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#define PROC_STACKGAP_DISABLE_EXEC 0x0008
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#ifndef _KERNEL
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__BEGIN_DECLS
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int procctl(idtype_t, id_t, int, void *);
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__END_DECLS
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#endif
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#endif /* !_SYS_PROCCTL_H_ */
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