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2002-04-29 Jeff Johnston <jjohnstn@redhat.com> 

*  libc/include/sys/unistd.h (pread, pwrite): Added prototypes.
        *  libc/unix/Makefile.am: Add pread.c and pwrite.c.
        *  libc/sys/linux/Makefile.am: Add pread64.c and pwrite64.c.
        *  libc/sys/linux/Makefile.in: Regenerated.
        *  libc/unix/Makefile.in: Ditto.
        *  libc/sys/linux/pread64.c: New file.
        *  libc/sys/linux/pwrite64.c: Ditto.
        *  libc/unix/pread.c: Ditto.
        *  libc/unix/pwrite.c: Ditto.
This commit is contained in:
Jeff Johnston 2002-04-29 19:31:23 +00:00
parent eccebec08d
commit 29798f0d57
10 changed files with 342 additions and 16 deletions
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12
newlib/ChangeLog
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@ -1,3 +1,15 @@
2002-04-29 Jeff Johnston <jjohnstn@redhat.com>
* libc/include/sys/unistd.h (pread, pwrite): Added prototypes.
* libc/unix/Makefile.am: Add pread.c and pwrite.c.
* libc/sys/linux/Makefile.am: Add pread64.c and pwrite64.c.
* libc/sys/linux/Makefile.in: Regenerated.
* libc/unix/Makefile.in: Ditto.
* libc/sys/linux/pread64.c: New file.
* libc/sys/linux/pwrite64.c: Ditto.
* libc/unix/pread.c: Ditto.
* libc/unix/pwrite.c: Ditto.
2002-04-26 Jeff Johnston <jjohnstn@redhat.com>
* libc/sys/linux/Makefile.am: Add io64.c.

2
newlib/libc/include/sys/unistd.h
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@ -78,6 +78,8 @@ int _EXFUN(pause, (void ));
int _EXFUN(pthread_atfork, (void (*)(void), void (*)(void), void (*)(void)));
#endif
int _EXFUN(pipe, (int __fildes[2] ));
ssize_t _EXFUN(pread, (int __fd, void *__buf, size_t __nbytes, off_t __offset));
ssize_t _EXFUN(pwrite, (int __fd, const void *__buf, size_t __nbytes, off_t __offset));
_READ_WRITE_RETURN_TYPE _EXFUN(read, (int __fd, void *__buf, size_t __nbyte ));
#if defined(__CYGWIN__)
int _EXFUN(revoke, (char *path));

2
newlib/libc/sys/linux/Makefile.am
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@ -9,7 +9,7 @@ SUBLIBS = $(LINUX_MACH_LIB)
LIB_SOURCES = \
brk.c getoptlong.c ids.c inode.c io.c io64.c linux.c mmap.c \
process.c realpath.c sched.c \
pread64.c process.c pwrite64.c realpath.c sched.c \
select.c signal.c siglongjmp.c socket.c sleep.c stack.c \
sysconf.c systat.c termios.c time.c \
usleep.c wait.c

19
newlib/libc/sys/linux/Makefile.in
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@ -98,7 +98,7 @@ SUBLIBS = $(LINUX_MACH_LIB)
LIB_SOURCES = \
brk.c getoptlong.c ids.c inode.c io.c io64.c linux.c mmap.c \
process.c realpath.c sched.c \
pread64.c process.c pwrite64.c realpath.c sched.c \
select.c signal.c siglongjmp.c socket.c sleep.c stack.c \
sysconf.c systat.c termios.c time.c \
usleep.c wait.c
@ -132,18 +132,19 @@ DEFS = @DEFS@ -I. -I$(srcdir)
CPPFLAGS = @CPPFLAGS@
LIBS = @LIBS@
@USE_LIBTOOL_FALSE@lib_a_OBJECTS = brk.o getoptlong.o ids.o inode.o \
@USE_LIBTOOL_FALSE@io.o io64.o linux.o mmap.o process.o realpath.o \
@USE_LIBTOOL_FALSE@sched.o select.o signal.o siglongjmp.o socket.o \
@USE_LIBTOOL_FALSE@sleep.o stack.o sysconf.o systat.o termios.o time.o \
@USE_LIBTOOL_FALSE@usleep.o wait.o
@USE_LIBTOOL_FALSE@io.o io64.o linux.o mmap.o pread64.o process.o \
@USE_LIBTOOL_FALSE@pwrite64.o realpath.o sched.o select.o signal.o \
@USE_LIBTOOL_FALSE@siglongjmp.o socket.o sleep.o stack.o sysconf.o \
@USE_LIBTOOL_FALSE@systat.o termios.o time.o usleep.o wait.o
LTLIBRARIES = $(noinst_LTLIBRARIES)
@USE_LIBTOOL_TRUE@liblinux_la_DEPENDENCIES =
@USE_LIBTOOL_TRUE@liblinux_la_OBJECTS = brk.lo getoptlong.lo ids.lo \
@USE_LIBTOOL_TRUE@inode.lo io.lo io64.lo linux.lo mmap.lo process.lo \
@USE_LIBTOOL_TRUE@realpath.lo sched.lo select.lo signal.lo \
@USE_LIBTOOL_TRUE@siglongjmp.lo socket.lo sleep.lo stack.lo sysconf.lo \
@USE_LIBTOOL_TRUE@systat.lo termios.lo time.lo usleep.lo wait.lo
@USE_LIBTOOL_TRUE@inode.lo io.lo io64.lo linux.lo mmap.lo pread64.lo \
@USE_LIBTOOL_TRUE@process.lo pwrite64.lo realpath.lo sched.lo select.lo \
@USE_LIBTOOL_TRUE@signal.lo siglongjmp.lo socket.lo sleep.lo stack.lo \
@USE_LIBTOOL_TRUE@sysconf.lo systat.lo termios.lo time.lo usleep.lo \
@USE_LIBTOOL_TRUE@wait.lo
CFLAGS = @CFLAGS@
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)

62
newlib/libc/sys/linux/pread64.c Normal file
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@ -0,0 +1,62 @@
/*
FUNCTION
<<pread64>>---read a large file from specified position
INDEX
pread64
ANSI_SYNOPSIS
#include <unistd.h>
ssize_t pread64(int <[fd]>, void *<[buf]>, size_t <[n]>, loff_t <[off]>);
TRAD_SYNOPSIS
#include <unistd.h>
ssize_t pread64(<[fd]>, <[buf]>, <[n]>, <[off]>)
int <[fd]>;
void *<[buf]>;
size_t <[n]>;
loff_t <[off]>;
DESCRIPTION
The <<pread64>> function is similar to <<pread>>. The only difference is
that it operates on large files and so takes a 64-bit offset. Like <<pread>>>,
the file position is unchanged by the function (i.e. the file position
is the same before and after a call to <<pread>>).
RETURNS
<<pread64>> returns the number of bytes read or <<-1>> if failure occurred.
PORTABILITY
<<pread64>> is an EL/IX extension.
Supporting OS subroutine required: <<read64>>, <<lseek64>>.
*/
#include <_ansi.h>
#include <unistd.h>
#include <reent.h>
ssize_t
_DEFUN (pread64, (fd, buf, n, off),
int fd _AND
_PTR buf _AND
size_t n _AND
loff_t off)
{
loff_t cur_pos;
_READ_WRITE_RETURN_TYPE num_read;
if ((cur_pos = lseek64 (fd, 0, SEEK_CUR)) == (loff_t)-1)
return -1;
if (lseek64 (fd, off, SEEK_SET) == (loff_t)-1)
return -1;
num_read = read64 (fd, buf, n);
if (lseek64 (fd, cur_pos, SEEK_SET) == (loff_t)-1)
return -1;
return (ssize_t)num_read;
}

62
newlib/libc/sys/linux/pwrite64.c Normal file
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@ -0,0 +1,62 @@
/*
FUNCTION
<<pwrite64>>---write a large file from specified position
INDEX
pwrite64
ANSI_SYNOPSIS
#include <unistd.h>
ssize_t pwrite64(int <[fd]>, void *<[buf]>, size_t <[n]>, loff_t <[off]>);
TRAD_SYNOPSIS
#include <unistd.h>
ssize_t pwrite64(<[fd]>, <[buf]>, <[n]>, <[off]>)
int <[fd]>;
void *<[buf]>;
size_t <[n]>;
loff_t <[off]>;
DESCRIPTION
The <<pwrite64>> function is similar to <<pwrite>>. The only difference is
that it operates on large files and so takes a 64-bit offset. Like <<pwrite>>>,
the file position is unchanged by the function (i.e. the file position
is the same before and after a call to <<pwrite>>).
RETURNS
<<pwrite64>> returns the number of bytes written or <<-1>> if failure occurred.
PORTABILITY
<<pwrite64>> is an EL/IX extension.
Supporting OS subroutine required: <<write64>>, <<lseek64>>.
*/
#include <_ansi.h>
#include <unistd.h>
#include <reent.h>
ssize_t
_DEFUN (pwrite64, (fd, buf, n, off),
int fd _AND
_PTR buf _AND
size_t n _AND
loff_t off)
{
loff_t cur_pos;
_READ_WRITE_RETURN_TYPE num_written;
if ((cur_pos = lseek64 (fd, 0, SEEK_CUR)) == (loff_t)-1)
return -1;
if (lseek64 (fd, off, SEEK_SET) == (loff_t)-1)
return -1;
num_written = write64 (fd, buf, n);
if (lseek64 (fd, cur_pos, SEEK_SET) == (loff_t)-1)
return -1;
return (ssize_t)num_written;
}

3
newlib/libc/unix/Makefile.am
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@ -5,7 +5,8 @@ AUTOMAKE_OPTIONS = cygnus
INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
LIB_SOURCES = \
getpass.c sigset.c getpwent.c ttyname.c getut.c getlogin.c getcwd.c
getcwd.c getlogin.c getpass.c getpwent.c getut.c \
pread.c pwrite.c sigset.c ttyname.c
libunix_la_LDFLAGS = -Xcompiler -nostdlib

13
newlib/libc/unix/Makefile.in
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@ -100,7 +100,8 @@ AUTOMAKE_OPTIONS = cygnus
INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
LIB_SOURCES = \
getpass.c sigset.c getpwent.c ttyname.c getut.c getlogin.c getcwd.c
getcwd.c getlogin.c getpass.c getpwent.c getut.c \
pread.c pwrite.c sigset.c ttyname.c
libunix_la_LDFLAGS = -Xcompiler -nostdlib
@ -130,13 +131,15 @@ DEFS = @DEFS@ -I. -I$(srcdir)
CPPFLAGS = @CPPFLAGS@
LIBS = @LIBS@
lib_a_LIBADD =
@USE_LIBTOOL_FALSE@lib_a_OBJECTS = getpass.o sigset.o getpwent.o \
@USE_LIBTOOL_FALSE@ttyname.o getut.o getlogin.o getcwd.o
@USE_LIBTOOL_FALSE@lib_a_OBJECTS = getcwd.o getlogin.o getpass.o \
@USE_LIBTOOL_FALSE@getpwent.o getut.o pread.o pwrite.o sigset.o \
@USE_LIBTOOL_FALSE@ttyname.o
LTLIBRARIES = $(noinst_LTLIBRARIES)
libunix_la_LIBADD =
@USE_LIBTOOL_TRUE@libunix_la_OBJECTS = getpass.lo sigset.lo getpwent.lo \
@USE_LIBTOOL_TRUE@ttyname.lo getut.lo getlogin.lo getcwd.lo
@USE_LIBTOOL_TRUE@libunix_la_OBJECTS = getcwd.lo getlogin.lo getpass.lo \
@USE_LIBTOOL_TRUE@getpwent.lo getut.lo pread.lo pwrite.lo sigset.lo \
@USE_LIBTOOL_TRUE@ttyname.lo
CFLAGS = @CFLAGS@
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)

91
newlib/libc/unix/pread.c Normal file
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@ -0,0 +1,91 @@
/*
FUNCTION
<<pread>>---read a file from specified position
INDEX
pread
INDEX
_pread_r
ANSI_SYNOPSIS
#include <unistd.h>
ssize_t pread(int <[fd]>, void *<[buf]>, size_t <[n]>, off_t <[off]>);
ssize_t _pread_r(struct _reent *<[rptr]>, int <[fd]>,
void *<[buf]>, size_t <[n]>, off_t <[off]>);
TRAD_SYNOPSIS
#include <unistd.h>
ssize_t pread(<[fd]>, <[buf]>, <[n]>, <[off]>)
int <[fd]>;
void *<[buf]>;
size_t <[n]>;
off_t <[off]>;
ssize_t _pread_r(<[rptr]>, <[fd]>, <[buf]>, <[n]>, <[off]>)
struct _reent *<[rptr]>;
int <[fd]>;
void *<[buf]>;
size_t <[n]>;
off_t <[off]>;
DESCRIPTION
The <<pread>> function is similar to <<read>>. One difference is that
<<pread>> has an additional parameter <[off]> which is the offset to
position in the file before reading. The function also differs in that
the file position is unchanged by the function (i.e. the file position
is the same before and after a call to <<pread>>).
The <<_pread_r>> function is the same as <<pread>>, only a reentrant
struct pointer <[rptr]> is provided to preserve reentrancy.
RETURNS
<<pread>> returns the number of bytes read or <<-1>> if failure occurred.
PORTABILITY
<<pread>> is non-ANSI and is specified by the Single Unix Specification.
Supporting OS subroutine required: <<read>>, <<lseek>>.
*/
#include <_ansi.h>
#include <unistd.h>
#include <reent.h>
ssize_t
_DEFUN (pread_r, (rptr, fd, buf, n, off),
struct _reent *rptr _AND
int fd _AND
_PTR buf _AND
size_t n _AND
off_t off)
{
off_t cur_pos;
_READ_WRITE_RETURN_TYPE num_read;
if ((cur_pos = _lseek_r (rptr, fd, 0, SEEK_CUR)) == (off_t)-1)
return -1;
if (_lseek_r (rptr, fd, off, SEEK_SET) == (off_t)-1)
return -1;
num_read = _read_r (rptr, fd, buf, n);
if (_lseek_r (rptr, fd, cur_pos, SEEK_SET) == (off_t)-1)
return -1;
return (ssize_t)num_read;
}
#ifndef _REENT_ONLY
ssize_t
_DEFUN (pread, (fd, buf, n, off),
int fd _AND
_PTR buf _AND
size_t n _AND
off_t off)
{
return _pread_r (_REENT, fd, buf, n, off);
}
#endif

92
newlib/libc/unix/pwrite.c Normal file
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@ -0,0 +1,92 @@
/*
FUNCTION
<<pwrite>>---write a file from specified position
INDEX
pwrite
INDEX
_pwrite_r
ANSI_SYNOPSIS
#include <unistd.h>
ssize_t pwrite(int <[fd]>, const void *<[buf]>,
size_t <[n]>, off_t <[off]>);
ssize_t _pwrite_r(struct _reent *<[rptr]>, int <[fd]>,
const void *<[buf]>, size_t <[n]>, off_t <[off]>);
TRAD_SYNOPSIS
#include <unistd.h>
ssize_t pwrite(<[fd]>, <[buf]>, <[n]>, <[off]>)
int <[fd]>;
const void *<[buf]>;
size_t <[n]>;
off_t <[off]>;
ssize_t _pwrite_r(<[rptr]>, <[fd]>, <[buf]>, <[n]>, <[off]>)
struct _reent *<[rptr]>;
int <[fd]>;
const void *<[buf]>;
size_t <[n]>;
off_t <[off]>;
DESCRIPTION
The <<pwrite>> function is similar to <<write>>. One difference is that
<<pwrite>> has an additional parameter <[off]> which is the offset to
position in the file before writing. The function also differs in that
the file position is unchanged by the function (i.e. the file position
is the same before and after a call to <<pwrite>>).
The <<_pwrite_r>> function is the same as <<pwrite>>, only a reentrant
struct pointer <[rptr]> is provided to preserve reentrancy.
RETURNS
<<pwrite>> returns the number of bytes written or <<-1>> if failure occurred.
PORTABILITY
<<pwrite>> is non-ANSI and is specified by the Single Unix Specification.
Supporting OS subroutine required: <<write>>, <<lseek>>.
*/
#include <_ansi.h>
#include <unistd.h>
#include <reent.h>
ssize_t
_DEFUN (pwrite_r, (rptr, fd, buf, n, off),
struct _reent *rptr _AND
int fd _AND
_CONST _PTR buf _AND
size_t n _AND
off_t off)
{
off_t cur_pos;
_READ_WRITE_RETURN_TYPE num_written;
if ((cur_pos = _lseek_r (rptr, fd, 0, SEEK_CUR)) == (off_t)-1)
return -1;
if (_lseek_r (rptr, fd, off, SEEK_SET) == (off_t)-1)
return -1;
num_written = _write_r (rptr, fd, buf, n);
if (_lseek_r (rptr, fd, cur_pos, SEEK_SET) == (off_t)-1)
return -1;
return (ssize_t)num_written;
}
#ifndef _REENT_ONLY
ssize_t
_DEFUN (pwrite, (fd, buf, n, off),
int fd _AND
_CONST _PTR buf _AND
size_t n _AND
off_t off)
{
return _pwrite_r (_REENT, fd, buf, n, off);
}
#endif