214 lines
6.6 KiB
C
214 lines
6.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1994 Christos Zoulas
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* Copyright (c) 1995 Frank van der Linden
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* Copyright (c) 1995 Scott Bartram
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* All rights reserved.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
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* from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
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* $FreeBSD$
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*/
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#ifndef _LINUX_UTIL_H_
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#define _LINUX_UTIL_H_
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/syslog.h>
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#include <sys/cdefs.h>
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#include <sys/uio.h>
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MALLOC_DECLARE(M_LINUX);
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MALLOC_DECLARE(M_EPOLL);
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extern char linux_emul_path[];
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extern int linux_use_emul_path;
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int linux_emul_convpath(const char *, enum uio_seg, char **, int, int);
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#define LUSECONVPATH(td) atomic_load_int(&linux_use_emul_path)
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#define LCONVPATH_AT(upath, pathp, i, dfd) \
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do { \
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int _error; \
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\
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_error = linux_emul_convpath(upath, UIO_USERSPACE, \
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pathp, i, dfd); \
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if (*(pathp) == NULL) \
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return (_error); \
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} while (0)
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#define LCONVPATH(upath, pathp, i) \
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LCONVPATH_AT(upath, pathp, i, AT_FDCWD)
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#define LCONVPATHEXIST(upath, pathp) LCONVPATH(upath, pathp, 0)
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#define LCONVPATHEXIST_AT(upath, pathp, dfd) LCONVPATH_AT(upath, pathp, 0, dfd)
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#define LCONVPATHCREAT(upath, pathp) LCONVPATH(upath, pathp, 1)
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#define LCONVPATHCREAT_AT(upath, pathp, dfd) LCONVPATH_AT(upath, pathp, 1, dfd)
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#define LFREEPATH(path) free(path, M_TEMP)
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#define DUMMY(s) \
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LIN_SDT_PROBE_DEFINE0(dummy, s, not_implemented); \
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int \
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linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args) \
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{ \
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static pid_t pid; \
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\
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if (pid != td->td_proc->p_pid) { \
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linux_msg(td, "syscall %s not implemented", #s); \
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LIN_SDT_PROBE0(dummy, s, not_implemented); \
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pid = td->td_proc->p_pid; \
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}; \
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\
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return (ENOSYS); \
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} \
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struct __hack
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/*
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* This is for the syscalls that are not even yet implemented in Linux.
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*
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* They're marked as UNIMPL in syscall.master so it will
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* have nosys record in linux_sysent[].
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*/
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#define UNIMPLEMENTED(s)
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void linux_msg(const struct thread *td, const char *fmt, ...)
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__printflike(2, 3);
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struct linux_device_handler {
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char *bsd_driver_name;
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char *linux_driver_name;
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char *bsd_device_name;
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char *linux_device_name;
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int linux_major;
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int linux_minor;
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int linux_char_device;
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};
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int linux_device_register_handler(struct linux_device_handler *h);
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int linux_device_unregister_handler(struct linux_device_handler *h);
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char *linux_driver_get_name_dev(device_t dev);
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int linux_driver_get_major_minor(const char *node, int *major, int *minor);
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int linux_vn_get_major_minor(const struct vnode *vn, int *major, int *minor);
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char *linux_get_char_devices(void);
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void linux_free_get_char_devices(char *string);
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/*
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* Criteria for interface name translation
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*/
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#define IFP_IS_ETH(ifp) ((ifp)->if_type == IFT_ETHER)
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#define IFP_IS_LOOP(ifp) ((ifp)->if_type == IFT_LOOP)
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struct ifnet;
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bool linux_use_real_ifname(const struct ifnet *ifp);
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#if defined(KTR)
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#define KTR_LINUX KTR_SUBSYS
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#define LINUX_CTRFMT(nm, fmt) #nm"("fmt")"
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#define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) do { \
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CTR6(KTR_LINUX, LINUX_CTRFMT(f, m), \
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p1, p2, p3, p4, p5, p6); \
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} while (0)
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#define LINUX_CTR(f) LINUX_CTR6(f, "", 0, 0, 0, 0, 0, 0)
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#define LINUX_CTR0(f, m) LINUX_CTR6(f, m, 0, 0, 0, 0, 0, 0)
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#define LINUX_CTR1(f, m, p1) LINUX_CTR6(f, m, p1, 0, 0, 0, 0, 0)
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#define LINUX_CTR2(f, m, p1, p2) LINUX_CTR6(f, m, p1, p2, 0, 0, 0, 0)
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#define LINUX_CTR3(f, m, p1, p2, p3) LINUX_CTR6(f, m, p1, p2, p3, 0, 0, 0)
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#define LINUX_CTR4(f, m, p1, p2, p3, p4) LINUX_CTR6(f, m, p1, p2, p3, p4, 0, 0)
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#define LINUX_CTR5(f, m, p1, p2, p3, p4, p5) LINUX_CTR6(f, m, p1, p2, p3, p4, p5, 0)
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#else
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#define LINUX_CTR(f)
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#define LINUX_CTR0(f, m)
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#define LINUX_CTR1(f, m, p1)
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#define LINUX_CTR2(f, m, p1, p2)
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#define LINUX_CTR3(f, m, p1, p2, p3)
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#define LINUX_CTR4(f, m, p1, p2, p3, p4)
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#define LINUX_CTR5(f, m, p1, p2, p3, p4, p5)
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#define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6)
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#endif
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/*
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* Some macros for rate limiting messages:
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* - noisy if compat.linux.debug = 1
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* - print only once if compat.linux.debug > 1
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*/
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#define LINUX_RATELIMIT_MSG_NOTTESTED(_what) \
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do { \
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static int seen = 0; \
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\
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if (seen == 0 && linux_debug >= 2) { \
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linux_msg(curthread, "%s is not tested, please report on emulation@FreeBSD.org how it works", _what); \
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\
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if (linux_debug < 3) \
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seen = 1; \
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} \
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} while (0)
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#define LINUX_RATELIMIT_MSG(_message) \
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do { \
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static int seen = 0; \
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\
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if (seen == 0) { \
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linux_msg(curthread, _message); \
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\
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if (linux_debug < 3) \
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seen = 1; \
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} \
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} while (0)
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#define LINUX_RATELIMIT_MSG_OPT1(_message, _opt1) \
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do { \
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static int seen = 0; \
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\
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if (seen == 0) { \
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linux_msg(curthread, _message, _opt1); \
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\
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if (linux_debug < 3) \
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seen = 1; \
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} \
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} while (0)
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#define LINUX_RATELIMIT_MSG_OPT2(_message, _opt1, _opt2) \
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do { \
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static int seen = 0; \
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\
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if (seen == 0) { \
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linux_msg(curthread, _message, _opt1, _opt2); \
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\
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if (linux_debug < 3) \
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seen = 1; \
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} \
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} while (0)
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#endif /* ! _LINUX_UTIL_H_ */
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