Add wrappers for pread and pwrite syscalls.

This commit is contained in:
Dmitrij Tejblum 1999-04-04 21:46:24 +00:00
parent 5cc4ab5323
commit 1b30ac5124
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=45313
6 changed files with 119 additions and 11 deletions

View File

@ -1,4 +1,4 @@
# $Id: Makefile.inc,v 1.2 1998/08/08 02:25:46 jb Exp $
# $Id: Makefile.inc,v 1.3 1998/08/17 03:36:16 jb Exp $
MDASM+= Ovfork.S brk.S cerror.S exect.S fork.S pipe.S ptrace.S \
sbrk.S setlogin.S sigpending.S sigprocmask.S sigreturn.S \
@ -7,8 +7,8 @@ MDASM+= Ovfork.S brk.S cerror.S exect.S fork.S pipe.S ptrace.S \
# Don't generate default code for these syscalls:
NOASM= __semctl.o break.o exit.o ftruncate.o getdomainname.o getlogin.o \
lseek.o mlockall.o mmap.o msgctl.o msgget.o msgrcv.o msgsnd.o \
munlockall.o openbsd_poll.o semconfig.o semget.o semop.o \
setdomainname.o shmat.o shmctl.o shmdt.o shmget.o sstk.o \
munlockall.o openbsd_poll.o pread.o pwrite.o semconfig.o semget.o \
semop.o setdomainname.o shmat.o shmctl.o shmdt.o shmget.o sstk.o \
thr_sleep.o thr_wakeup.o truncate.o uname.o vfork.o yield.o
PSEUDO= _getlogin.o

View File

@ -1,5 +1,5 @@
# from: Makefile.inc,v 1.1 1993/09/03 19:04:23 jtc Exp
# $Id: Makefile.inc,v 1.11 1998/07/28 03:33:17 jlemon Exp $
# $Id: Makefile.inc,v 1.12 1998/07/29 13:43:06 bde Exp $
SRCS+= i386_get_ioperm.c i386_get_ldt.c i386_set_ioperm.c i386_set_ldt.c \
i386_vm86.c
@ -11,8 +11,8 @@ MDASM= Ovfork.S brk.S cerror.S exect.S fork.S pipe.S \
# Don't generate default code for these syscalls:
NOASM= __semctl.o break.o exit.o ftruncate.o getdomainname.o getlogin.o \
lseek.o mlockall.o mmap.o msgctl.o msgget.o msgrcv.o msgsnd.o \
munlockall.o openbsd_poll.o semconfig.o semget.o semop.o \
setdomainname.o shmat.o shmctl.o shmdt.o shmget.o sstk.o \
munlockall.o openbsd_poll.o pread.o pwrite.o semconfig.o semget.o \
semop.o setdomainname.o shmat.o shmctl.o shmdt.o shmget.o sstk.o \
thr_sleep.o thr_wakeup.o truncate.o uname.o vfork.o yield.o
PSEUDO= _getlogin.o

View File

@ -1,5 +1,5 @@
# from: Makefile.inc,v 1.1 1993/09/03 19:04:23 jtc Exp
# $Id: Makefile.inc,v 1.11 1998/07/28 03:33:17 jlemon Exp $
# $Id: Makefile.inc,v 1.12 1998/07/29 13:43:06 bde Exp $
SRCS+= i386_get_ioperm.c i386_get_ldt.c i386_set_ioperm.c i386_set_ldt.c \
i386_vm86.c
@ -11,8 +11,8 @@ MDASM= Ovfork.S brk.S cerror.S exect.S fork.S pipe.S \
# Don't generate default code for these syscalls:
NOASM= __semctl.o break.o exit.o ftruncate.o getdomainname.o getlogin.o \
lseek.o mlockall.o mmap.o msgctl.o msgget.o msgrcv.o msgsnd.o \
munlockall.o openbsd_poll.o semconfig.o semget.o semop.o \
setdomainname.o shmat.o shmctl.o shmdt.o shmget.o sstk.o \
munlockall.o openbsd_poll.o pread.o pwrite.o semconfig.o semget.o \
semop.o setdomainname.o shmat.o shmctl.o shmdt.o shmget.o sstk.o \
thr_sleep.o thr_wakeup.o truncate.o uname.o vfork.o yield.o
PSEUDO= _getlogin.o

View File

@ -1,5 +1,5 @@
# @(#)Makefile.inc 8.3 (Berkeley) 10/24/94
# $Id: Makefile.inc,v 1.57 1998/11/24 08:15:08 jkoshy Exp $
# $Id: Makefile.inc,v 1.58 1999/04/04 12:29:31 dfr Exp $
# sys sources
.PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/sys ${.CURDIR}/../libc/sys
@ -16,7 +16,7 @@
.include "${.CURDIR}/../libc/${MACHINE_ARCH}/sys/Makefile.inc"
# Sources common to both syscall interfaces:
SRCS+= ftruncate.c lseek.c mmap.c truncate.c
SRCS+= ftruncate.c lseek.c mmap.c truncate.c pread.c pwrite.c
# Build __error() into libc, but not libc_r which has it's own:
.if ${LIB} == "c"

54
lib/libc/sys/pread.c Normal file
View File

@ -0,0 +1,54 @@
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)mmap.c 8.1 (Berkeley) 6/17/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
/*
* This function provides 64-bit offset padding that
* is not supplied by GCC 1.X but is supplied by GCC 2.X.
*/
ssize_t
pread(fd, buf, nbyte, offset)
int fd;
void *buf;
size_t nbyte;
off_t offset;
{
return ((ssize_t)__syscall((quad_t)SYS_pread, fd, buf, nbyte, 0, offset));
}

54
lib/libc/sys/pwrite.c Normal file
View File

@ -0,0 +1,54 @@
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)mmap.c 8.1 (Berkeley) 6/17/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
/*
* This function provides 64-bit offset padding that
* is not supplied by GCC 1.X but is supplied by GCC 2.X.
*/
ssize_t
pwrite(fd, buf, nbyte, offset)
int fd;
const void *buf;
size_t nbyte;
off_t offset;
{
return ((ssize_t)__syscall((quad_t)SYS_pwrite, fd, buf, nbyte, 0, offset));
}