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author | Andreas Jaeger <aj@suse.de> | 2000-05-30 12:50:54 +0000 |
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committer | Andreas Jaeger <aj@suse.de> | 2000-05-30 12:50:54 +0000 |
commit | e82a0295170ae512560b099cb4533f5a4b9cf57c (patch) | |
tree | e052ef619d7860d3c2f6538bcdf81f9dcc74c3ea /sysdeps/unix/sysv/linux/mips/ftruncate64.c | |
parent | 03fad0ecf6492a92010aeb1101029e4f768a2666 (diff) | |
download | glibc-e82a0295170ae512560b099cb4533f5a4b9cf57c.tar.gz glibc-e82a0295170ae512560b099cb4533f5a4b9cf57c.tar.xz glibc-e82a0295170ae512560b099cb4533f5a4b9cf57c.zip |
Update.
2000-05-30 Andreas Jaeger <aj@suse.de> * sysdeps/unix/sysv/linux/mips/truncate64.c: New file. * sysdeps/unix/sysv/linux/mips/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/mips/pread64.c: Readded file. * sysdeps/unix/sysv/linux/mips/pwrite64.c: Readded file. * sysdeps/unix/sysv/linux/mips/pread.c: Readded file. * sysdeps/unix/sysv/linux/mips/pwrite.c: Readded file.
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/ftruncate64.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/mips/ftruncate64.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/ftruncate64.c b/sysdeps/unix/sysv/linux/mips/ftruncate64.c new file mode 100644 index 0000000000..66c6548ee8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/mips/ftruncate64.c @@ -0,0 +1,83 @@ +/* Copyright (C) 1997, 1998, 1999, 2000 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 <sys/types.h> +#include <errno.h> +#include <endian.h> +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +#include "kernel-features.h" + +#ifdef __NR_ftruncate64 +#ifndef __ASSUME_TRUNCATE64_SYSCALL +/* The variable is shared between all wrappers around *truncate64 calls. */ +extern int __have_no_truncate64; +#endif + +/* The order of hight, low depends on endianness. */ +extern int __syscall_ftruncate64 (int fd, int high_length, int low_length); + + +/* Truncate the file FD refers to to LENGTH bytes. */ +int +ftruncate64 (int fd, off64_t length) +{ +#ifndef __ASSUME_TRUNCATE64_SYSCALL + if (! __have_no_truncate64) +#endif + { + unsigned int low = length & 0xffffffff; + unsigned int high = length >> 32; +#ifndef __ASSUME_TRUNCATE64_SYSCALL + int saved_errno = errno; +#endif +#if __BYTE_ORDER == __LITTLE_ENDIAN + /* Use a fill argument to pass low, high in an aligned pair of + arguments (here 2/3). */ + int result = INLINE_SYSCALL (ftruncate64, 3, fd, 0, low, high); +#elif __BYTE_ORDER == __BIG_ENDIAN + int result = INLINE_SYSCALL (ftruncate64, 3, fd, 0, high, low); +#endif +#ifndef __ASSUME_TRUNCATE64_SYSCALL + if (result != -1 || errno != ENOSYS) +#endif + return result; + +#ifndef __ASSUME_TRUNCATE64_SYSCALL + __set_errno (saved_errno); + __have_no_truncate64 = 1; +#endif + } + +#ifndef __ASSUME_TRUNCATE64_SYSCALL + if ((off_t) length != length) + { + __set_errno (EINVAL); + return -1; + } + return __ftruncate (fd, (off_t) length); +#endif +} + +#else +/* Use the generic implementation. */ +# include <sysdeps/generic/ftruncate64.c> +#endif |