183 lines
5.7 KiB
C
183 lines
5.7 KiB
C
/* $NetBSD: linux32_fcntl.c,v 1.10 2014/05/17 09:30:07 njoly Exp $ */
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/*-
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* Copyright (c) 2006 Emmanuel Dreyfus, 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Emmanuel Dreyfus
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* 4. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: linux32_fcntl.c,v 1.10 2014/05/17 09:30:07 njoly Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/signal.h>
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#include <sys/fcntl.h>
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#include <sys/filedesc.h>
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#include <machine/types.h>
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#include <sys/syscallargs.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_fcntl.h>
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#include <compat/linux/common/linux_machdep.h>
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#include <compat/linux/common/linux_misc.h>
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#include <compat/linux/common/linux_ipc.h>
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#include <compat/linux/common/linux_sem.h>
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#include <compat/linux/linux_syscallargs.h>
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#include <compat/linux32/common/linux32_types.h>
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#include <compat/linux32/common/linux32_signal.h>
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#include <compat/linux32/common/linux32_machdep.h>
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#include <compat/linux32/linux32_syscallargs.h>
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struct linux32_flock {
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short l_type;
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short l_whence;
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int32_t l_start;
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int32_t l_len;
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linux_pid_t l_pid;
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};
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struct linux32_flock64 {
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short l_type;
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short l_whence;
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netbsd32_int64 l_start;
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netbsd32_int64 l_len;
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linux_pid_t l_pid;
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};
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conv_linux_flock(linux32, flock)
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conv_linux_flock(linux32, flock64)
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int
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linux32_sys_open(struct lwp *l, const struct linux32_sys_open_args *uap, register_t *retval)
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{
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/* {
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syscallarg(const netbsd32_charp) path;
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syscallarg(int) flags;
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syscallarg(int) mode;
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} */
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struct linux_sys_open_args ua;
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NETBSD32TOP_UAP(path, const char);
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NETBSD32TO64_UAP(flags);
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NETBSD32TO64_UAP(mode);
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return linux_sys_open(l, &ua, retval);
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}
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/*
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* The linux support for 64bit file offsets introduced both an fcntl64()
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* function and LINUX_F_SETLK64 (et al), however the fcntl64() function
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* can still be passed LINUX_F_GETLK (etc).
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* In practice this means that the two functions are identical!
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*
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* We have to intercept both sets of locking primitives because the
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* structure layout of the 64bit version differs from that on amd64 due
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* to extra padding because the alignment constraint for int64_t differs.
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*/
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int
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linux32_sys_fcntl(struct lwp *l, const struct linux32_sys_fcntl_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(int) cmd;
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syscallarg(netbsd32_voidp) arg;
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} */
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struct linux_sys_fcntl_args ua;
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int cmd = SCARG(uap, cmd);
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switch (cmd) {
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case LINUX_F_GETLK64:
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do_linux_getlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg),
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linux32, flock64);
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case LINUX_F_SETLK64:
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case LINUX_F_SETLKW64:
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do_linux_setlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg),
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linux32, flock64, LINUX_F_SETLK64);
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case LINUX_F_GETLK:
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do_linux_getlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg),
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linux32, flock);
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case LINUX_F_SETLK:
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case LINUX_F_SETLKW:
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do_linux_setlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg),
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linux32, flock, LINUX_F_SETLK);
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default:
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break;
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}
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NETBSD32TO64_UAP(fd);
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SCARG(&ua, cmd) = cmd;
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NETBSD32TOP_UAP(arg, void);
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return linux_sys_fcntl(l, &ua, retval);
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}
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int
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linux32_sys_fadvise64(struct lwp *l,
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const struct linux32_sys_fadvise64_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(uint32_t) offlo;
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syscallarg(uint32_t) offhi;
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syscallarg(netbsd32_size_t) len;
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syscallarg(int) advice;
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} */
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off_t off = ((off_t)SCARG(uap, offhi) << 32) + SCARG(uap, offlo);
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return do_posix_fadvise(SCARG(uap, fd), off,
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SCARG(uap, len), linux_to_bsd_posix_fadv(SCARG(uap, advice)));
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}
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int
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linux32_sys_fadvise64_64(struct lwp *l,
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const struct linux32_sys_fadvise64_64_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(uint32_t) offlo;
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syscallarg(uint32_t) offhi;
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syscallarg(uint32_t) lenlo;
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syscallarg(uint32_t) lenhi;
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syscallarg(int) advice;
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} */
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off_t off = ((off_t)SCARG(uap, offhi) << 32) + SCARG(uap, offlo);
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off_t len = ((off_t)SCARG(uap, lenhi) << 32) + SCARG(uap, lenlo);
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return do_posix_fadvise(SCARG(uap, fd), off,
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len, linux_to_bsd_posix_fadv(SCARG(uap, advice)));
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}
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