diff options
| -rw-r--r-- | ChangeLog | 15 | ||||
| -rw-r--r-- | hurd/fd-read.c | 6 | ||||
| -rw-r--r-- | hurd/fd-write.c | 7 | ||||
| -rw-r--r-- | hurd/hurd/fd.h | 10 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/pread.c | 31 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/pwrite.c | 33 |
6 files changed, 92 insertions, 10 deletions
@@ -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 8bfc03ab8b..d78cf5c17e 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 288ce6bac8..0af5829131 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 aa48f21acf..7e5a9781e0 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 0000000000..6deb969506 --- /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 0000000000..405c1525e7 --- /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) |