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authorRoland McGrath <roland@gnu.org>1999-06-22 23:56:08 +0000
committerRoland McGrath <roland@gnu.org>1999-06-22 23:56:08 +0000
commit8b2134db5eb503216886522e11db88d74446c64d (patch)
tree1caa1ac50bf57fa8d2079aaa2f75a06b376fcb9c
parent725af56f3adb3ea40cc4e58d1c9e0215e71186ba (diff)
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1999-06-23 Roland McGrath <roland@baalperazim.frob.com>
* sysdeps/mach/hurd/read.c (__libc_read): Just call __pread with OFFSET argument of (off_t) -1. * sysdeps/mach/hurd/write.c (__libc_write): Just call __pwrite with OFFSET argument of (off_t) -1. * sysdeps/mach/hurd/pwrite.c: New file. * sysdeps/mach/hurd/pread.c: New file. * hurd/fd-read.c (_hurd_fd_read): Take new parameter OFFSET and pass it in the RPC instead of always -1. * hurd/fd-write.c (_hurd_fd_write): Likewise. * hurd/hurd/fd.h: Update decls.
-rw-r--r--ChangeLog15
-rw-r--r--hurd/fd-read.c6
-rw-r--r--hurd/fd-write.c7
-rw-r--r--hurd/hurd/fd.h10
-rw-r--r--sysdeps/mach/hurd/pread.c31
-rw-r--r--sysdeps/mach/hurd/pwrite.c33
6 files changed, 92 insertions, 10 deletions
diff --git a/ChangeLog b/ChangeLog
index 9cb7b61..ac2bfae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,18 @@
+1999-06-23 Roland McGrath <roland@baalperazim.frob.com>
+
+ * sysdeps/mach/hurd/read.c (__libc_read): Just call __pread with
+ OFFSET argument of (off_t) -1.
+ * sysdeps/mach/hurd/write.c (__libc_write): Just call __pwrite with
+ OFFSET argument of (off_t) -1.
+
+ * sysdeps/mach/hurd/pwrite.c: New file.
+ * sysdeps/mach/hurd/pread.c: New file.
+
+ * hurd/fd-read.c (_hurd_fd_read): Take new parameter OFFSET and
+ pass it in the RPC instead of always -1.
+ * hurd/fd-write.c (_hurd_fd_write): Likewise.
+ * hurd/hurd/fd.h: Update decls.
+
1999-06-22 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* libio/wscanf.c: Include <wchar.h> for prototype.
diff --git a/hurd/fd-read.c b/hurd/fd-read.c
index 8bfc03a..d78cf5c 100644
--- a/hurd/fd-read.c
+++ b/hurd/fd-read.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1993,94,95,97,99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -23,7 +23,7 @@
#include <string.h>
error_t
-_hurd_fd_read (struct hurd_fd *fd, void *buf, size_t *nbytes)
+_hurd_fd_read (struct hurd_fd *fd, void *buf, size_t *nbytes, off_t offset)
{
error_t err;
char *data;
@@ -31,7 +31,7 @@ _hurd_fd_read (struct hurd_fd *fd, void *buf, size_t *nbytes)
error_t readfd (io_t port)
{
- return __io_read (port, &data, &nread, -1, *nbytes);
+ return __io_read (port, &data, &nread, offset, *nbytes);
}
data = buf;
diff --git a/hurd/fd-write.c b/hurd/fd-write.c
index 288ce6b..0af5829 100644
--- a/hurd/fd-write.c
+++ b/hurd/fd-write.c
@@ -1,5 +1,5 @@
/* _hurd_fd_write -- write to a file descriptor; handles job control et al.
- Copyright (C) 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1993,94,95,97,99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -23,14 +23,15 @@
#include <hurd/fd.h>
error_t
-_hurd_fd_write (struct hurd_fd *fd, const void *buf, size_t *nbytes)
+_hurd_fd_write (struct hurd_fd *fd,
+ const void *buf, size_t *nbytes, off_t offset)
{
error_t err;
mach_msg_type_number_t wrote;
error_t writefd (io_t port)
{
- return __io_write (port, buf, *nbytes, -1, &wrote);
+ return __io_write (port, buf, *nbytes, offset, &wrote);
}
err = HURD_FD_PORT_USE (fd, _hurd_ctty_output (port, ctty, writefd));
diff --git a/hurd/hurd/fd.h b/hurd/hurd/fd.h
index aa48f21..7e5a978 100644
--- a/hurd/hurd/fd.h
+++ b/hurd/hurd/fd.h
@@ -1,5 +1,5 @@
/* File descriptors.
- Copyright (C) 1993,94,95,96,97,98 Free Software Foundation, Inc.
+ Copyright (C) 1993,94,95,96,97,98, 99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -208,12 +208,14 @@ extern struct hurd_fd *_hurd_new_fd (io_t port, io_t ctty);
extern error_t _hurd_fd_close (struct hurd_fd *fd);
-/* Read and write data from a file descriptor; just like `read' and `write'.
+/* Read and write data from a file descriptor; just like `read' and `write'
+ if OFFSET is -1, or like `pread' and `pwrite' if OFFSET is not -1.
If successful, stores the amount actually read or written in *NBYTES. */
-extern error_t _hurd_fd_read (struct hurd_fd *fd, void *buf, size_t *nbytes);
+extern error_t _hurd_fd_read (struct hurd_fd *fd,
+ void *buf, size_t *nbytes, off_t offset);
extern error_t _hurd_fd_write (struct hurd_fd *fd,
- const void *buf, size_t *nbytes);
+ const void *buf, size_t *nbytes, off_t offset);
/* Call *RPC on PORT and/or CTTY; if a call on CTTY returns EBACKGROUND,
diff --git a/sysdeps/mach/hurd/pread.c b/sysdeps/mach/hurd/pread.c
new file mode 100644
index 0000000..6deb969
--- /dev/null
+++ b/sysdeps/mach/hurd/pread.c
@@ -0,0 +1,31 @@
+/* Read block from given position in file without changing file pointer.
+ Hurd version.
+ Copyright (C) 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <unistd.h>
+
+ssize_t
+__pread (int fd, void *buf, size_t nbyte, off_t offset)
+{
+ error_t err = HURD_FD_USE (fd, _hurd_fd_read (descriptor,
+ buf, &nbytes, offset));
+ return err ? __hurd_dfail (fd, err) : nbytes;
+}
+weak_alias (__pread, pread)
diff --git a/sysdeps/mach/hurd/pwrite.c b/sysdeps/mach/hurd/pwrite.c
new file mode 100644
index 0000000..405c152
--- /dev/null
+++ b/sysdeps/mach/hurd/pwrite.c
@@ -0,0 +1,33 @@
+/* Write block at given position in file without changing file pointer.
+ Hurd version.
+ Copyright (C) 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <unistd.h>
+
+/* Write NBYTES of BUF to FD at given position OFFSET without changing
+ the file position. Return the number written, or -1. */
+ssize_t
+__pwrite (int fd, const void *buf, size_t nbytes, off_t offset)
+{
+ error_t err = HURD_FD_USE (fd, _hurd_fd_write (descriptor,
+ buf, &nbytes, offset));
+ return err ? __hurd_dfail (fd, err) : nbytes;
+}
+weak_alias (__pwrite, pwrite)