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author | Ulrich Drepper <drepper@redhat.com> | 2002-05-30 23:35:59 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2002-05-30 23:35:59 +0000 |
commit | 9bd646022380b5eef343c61f8a8274135540db09 (patch) | |
tree | d2badaf6dbf17a5958b89f4c1b024d56f9512b98 /sysdeps/unix/sysv/linux/readahead.c | |
parent | 5c24bb7d7bf2df8085bbf8a5b6ccfdcec6c8cafc (diff) | |
download | glibc-9bd646022380b5eef343c61f8a8274135540db09.tar.gz glibc-9bd646022380b5eef343c61f8a8274135540db09.tar.xz glibc-9bd646022380b5eef343c61f8a8274135540db09.zip |
Update.
2002-05-30 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/Makefile [$(subdir)==misc] (sysdep_routines): Add readahead. * sysdeps/unix/sysv/linux/readahead.c: New file. * sysdeps/unix/sysv/linux/syscalls.list: Add sendfile64 syscall. * sysdeps/unix/sysv/linux/Versions: Export readahead and sendfile64. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Add readahead syscall. Add sendfile64 alias to sendfile syscall. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add s_readahead syscall. * sysdeps/unix/sysv/linux/i386/sysdep.h: Use __i686.get_pc_thunk.XX special section for PIC register loading. * sysdeps/unix/sysv/linux/i386/i686/sysdep.h: Likewise. * config.h.in: Define HAVE_HIDDEN. * configure.in: Also define HAVE_HIDDEN if HAVE_PROTECTED is defined. * elf/elf.h: Correct Alpha TLS relocations according to last spec.
Diffstat (limited to 'sysdeps/unix/sysv/linux/readahead.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/readahead.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/readahead.c b/sysdeps/unix/sysv/linux/readahead.c new file mode 100644 index 0000000000..33ea7315d5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/readahead.c @@ -0,0 +1,51 @@ +/* Provide kernel hint to read ahead. + Copyright (C) 2002 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <sys/types.h> + +#include <sysdep.h> +#include <sys/syscall.h> + + +#ifdef __NR_readahead + +extern int __syscall_readahead (int fd, off_t offset_hi, off_t offset_lo, + size_t count); + + +ssize_t +__readahead (int fd, loff_t offset, size_t count) +{ + return INLINE_SYSCALL (readahead, 4, fd, (off_t) (offset >> 32), + (off_t) (offset & 0xffffffff), count); +} +#else +ssize_t +__readahead (int fd, loff_t offset, size_t count) +{ + __set_errno (ENOSYS); + return -1; +} +stub_warning (readahead) + +# include <stub-tag.h> +#endif + +weak_alias (__readahead, readahead) |