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Add support for _PC_TIMESTAMP_RESOLUTION for ffs/mfs, cd9600, ext2,
msdos, NFS, fifos and devices, plus support for querying it in getconf(2) and the requisite pathconf(2) manpage blurb ok tedu@
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guenther
parent
17f3788af0
commit
d4648cd609
@ -1,4 +1,4 @@
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.\" $OpenBSD: pathconf.2,v 1.17 2012/07/17 06:30:31 matthew Exp $
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.\" $OpenBSD: pathconf.2,v 1.18 2013/03/28 03:29:45 guenther Exp $
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.\" $NetBSD: pathconf.2,v 1.2 1995/02/27 12:35:22 cgd Exp $
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.\"
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.\" Copyright (c) 1993
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@ -30,7 +30,7 @@
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.\"
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.\" @(#)pathconf.2 8.1 (Berkeley) 6/4/93
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.\"
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.Dd $Mdocdate: July 17 2012 $
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.Dd $Mdocdate: March 28 2013 $
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.Dt PATHCONF 2
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.Os
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.Sh NAME
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@ -129,6 +129,8 @@ Recommended file transfer buffer alignment.
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Maximum number of bytes in a symbolic link.
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.It Dv _PC_SYNC_IO
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Returns 1 if synchronized I/O is supported, otherwise 0.
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.It Dv _PC_TIMESTAMP_RESOLUTION
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The resolution in nanoseconds of file timestamps.
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.El
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.Sh RETURN VALUES
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If the call to
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@ -1,4 +1,4 @@
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/* $OpenBSD: cd9660_vnops.c,v 1.58 2013/03/28 02:08:39 guenther Exp $ */
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/* $OpenBSD: cd9660_vnops.c,v 1.59 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: cd9660_vnops.c,v 1.42 1997/10/16 23:56:57 christos Exp $ */
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/*-
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@ -882,6 +882,9 @@ cd9660_pathconf(void *v)
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case _PC_NO_TRUNC:
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*ap->a_retval = 1;
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break;
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case _PC_TIMESTAMP_RESOLUTION:
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*ap->a_retval = 1000000000; /* one billion nanoseconds */
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break;
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default:
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error = EINVAL;
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break;
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@ -1,4 +1,4 @@
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/* $OpenBSD: spec_vnops.c,v 1.70 2013/03/28 02:08:39 guenther Exp $ */
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/* $OpenBSD: spec_vnops.c,v 1.71 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: spec_vnops.c,v 1.29 1996/04/22 01:42:38 christos Exp $ */
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/*
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@ -623,6 +623,9 @@ spec_pathconf(void *v)
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case _PC_VDISABLE:
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*ap->a_retval = _POSIX_VDISABLE;
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break;
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case _PC_TIMESTAMP_RESOLUTION:
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*ap->a_retval = 1;
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break;
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default:
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error = EINVAL;
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break;
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@ -1,4 +1,4 @@
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/* $OpenBSD: fifo_vnops.c,v 1.38 2013/03/28 02:08:39 guenther Exp $ */
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/* $OpenBSD: fifo_vnops.c,v 1.39 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: fifo_vnops.c,v 1.18 1996/03/16 23:52:42 christos Exp $ */
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/*
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@ -417,6 +417,9 @@ fifo_pathconf(void *v)
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case _PC_CHOWN_RESTRICTED:
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*ap->a_retval = 1;
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break;
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case _PC_TIMESTAMP_RESOLUTION:
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*ap->a_retval = 1;
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break;
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default:
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error = EINVAL;
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break;
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@ -1,4 +1,4 @@
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/* $OpenBSD: msdosfs_vnops.c,v 1.84 2013/03/28 02:08:39 guenther Exp $ */
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/* $OpenBSD: msdosfs_vnops.c,v 1.85 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: msdosfs_vnops.c,v 1.63 1997/10/17 11:24:19 ws Exp $ */
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/*-
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@ -1888,6 +1888,9 @@ msdosfs_pathconf(void *v)
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case _PC_NO_TRUNC:
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*ap->a_retval = 0;
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break;
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case _PC_TIMESTAMP_RESOLUTION:
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*ap->a_retval = 2000000000; /* 2 billion nanoseconds */
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break;
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default:
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error = EINVAL;
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break;
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@ -1,4 +1,4 @@
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/* $OpenBSD: nfs_vnops.c,v 1.143 2013/03/28 02:27:27 tedu Exp $ */
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/* $OpenBSD: nfs_vnops.c,v 1.144 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: nfs_vnops.c,v 1.62.4.1 1996/07/08 20:26:52 jtc Exp $ */
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/*
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@ -2987,6 +2987,9 @@ nfs_pathconf(void *v)
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case _PC_2_SYMLINKS:
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*ap->a_retval = 1;
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break;
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case _PC_TIMESTAMP_RESOLUTION:
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*ap->a_retval = NFS_ISV3(ap->a_vp) ? 1 : 1000;
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break;
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default:
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error = EINVAL;
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break;
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@ -1,4 +1,4 @@
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/* $OpenBSD: unistd.h,v 1.27 2013/03/28 02:08:39 guenther Exp $ */
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/* $OpenBSD: unistd.h,v 1.28 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: unistd.h,v 1.10 1994/06/29 06:46:06 cgd Exp $ */
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/*
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@ -80,25 +80,26 @@ struct __tfork51 {
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/* the pathconf(2) variable values are part of the ABI */
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/* configurable pathname variables */
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#define _PC_LINK_MAX 1
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#define _PC_MAX_CANON 2
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#define _PC_MAX_INPUT 3
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#define _PC_NAME_MAX 4
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#define _PC_PATH_MAX 5
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#define _PC_PIPE_BUF 6
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#define _PC_CHOWN_RESTRICTED 7
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#define _PC_NO_TRUNC 8
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#define _PC_VDISABLE 9
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#define _PC_2_SYMLINKS 10
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#define _PC_ALLOC_SIZE_MIN 11
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#define _PC_ASYNC_IO 12
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#define _PC_FILESIZEBITS 13
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#define _PC_PRIO_IO 14
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#define _PC_REC_INCR_XFER_SIZE 15
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#define _PC_REC_MAX_XFER_SIZE 16
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#define _PC_REC_MIN_XFER_SIZE 17
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#define _PC_REC_XFER_ALIGN 18
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#define _PC_SYMLINK_MAX 19
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#define _PC_SYNC_IO 20
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#define _PC_LINK_MAX 1
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#define _PC_MAX_CANON 2
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#define _PC_MAX_INPUT 3
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#define _PC_NAME_MAX 4
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#define _PC_PATH_MAX 5
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#define _PC_PIPE_BUF 6
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#define _PC_CHOWN_RESTRICTED 7
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#define _PC_NO_TRUNC 8
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#define _PC_VDISABLE 9
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#define _PC_2_SYMLINKS 10
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#define _PC_ALLOC_SIZE_MIN 11
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#define _PC_ASYNC_IO 12
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#define _PC_FILESIZEBITS 13
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#define _PC_PRIO_IO 14
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#define _PC_REC_INCR_XFER_SIZE 15
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#define _PC_REC_MAX_XFER_SIZE 16
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#define _PC_REC_MIN_XFER_SIZE 17
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#define _PC_REC_XFER_ALIGN 18
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#define _PC_SYMLINK_MAX 19
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#define _PC_SYNC_IO 20
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#define _PC_TIMESTAMP_RESOLUTION 21
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#endif /* !_SYS_UNISTD_H_ */
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@ -1,4 +1,4 @@
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/* $OpenBSD: ext2fs_extern.h,v 1.29 2010/12/21 20:14:44 thib Exp $ */
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/* $OpenBSD: ext2fs_extern.h,v 1.30 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: ext2fs_extern.h,v 1.1 1997/06/11 09:33:55 bouyer Exp $ */
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/*-
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@ -140,6 +140,7 @@ int ext2fs_mkdir(void *);
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int ext2fs_rmdir(void *);
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int ext2fs_symlink(void *);
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int ext2fs_readlink(void *);
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int ext2fs_pathconf(void *);
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int ext2fs_advlock(void *);
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int ext2fs_makeinode(int, struct vnode *, struct vnode **,
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struct componentname *cnp);
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@ -1,4 +1,4 @@
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/* $OpenBSD: ext2fs_vnops.c,v 1.61 2011/07/04 20:35:35 deraadt Exp $ */
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/* $OpenBSD: ext2fs_vnops.c,v 1.62 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: ext2fs_vnops.c,v 1.1 1997/06/11 09:34:09 bouyer Exp $ */
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/*
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@ -1120,6 +1120,26 @@ ext2fs_readlink(void *v)
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return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
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}
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/*
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* Return POSIX pathconf information applicable to ext2 filesystems.
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*/
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int
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ext2fs_pathconf(void *v)
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{
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struct vop_pathconf_args *ap = v;
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int error = 0;
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switch (ap->a_name) {
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case _PC_TIMESTAMP_RESOLUTION:
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*ap->a_retval = 1000000000; /* 1 billion nanoseconds */
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break;
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default:
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return (ufs_pathconf(v));
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}
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return (error);
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}
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/*
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* Advisory record locking support
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*/
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@ -1286,7 +1306,7 @@ struct vops ext2fs_vops = {
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.vop_strategy = ufs_strategy,
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.vop_print = ufs_print,
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.vop_islocked = ufs_islocked,
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.vop_pathconf = ufs_pathconf,
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.vop_pathconf = ext2fs_pathconf,
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.vop_advlock = ext2fs_advlock,
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.vop_bwrite = vop_generic_bwrite
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};
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@ -1,4 +1,4 @@
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/* $OpenBSD: ufs_vnops.c,v 1.105 2013/03/28 02:08:39 guenther Exp $ */
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/* $OpenBSD: ufs_vnops.c,v 1.106 2013/03/28 03:29:44 guenther Exp $ */
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/* $NetBSD: ufs_vnops.c,v 1.18 1996/05/11 18:28:04 mycroft Exp $ */
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/*
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@ -1755,6 +1755,9 @@ ufs_pathconf(void *v)
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case _PC_2_SYMLINKS:
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*ap->a_retval = 1;
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break;
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case _PC_TIMESTAMP_RESOLUTION:
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*ap->a_retval = 1;
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break;
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default:
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error = EINVAL;
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break;
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@ -1,4 +1,4 @@
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/* $OpenBSD: getconf.c,v 1.15 2013/03/07 08:54:53 guenther Exp $ */
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/* $OpenBSD: getconf.c,v 1.16 2013/03/28 03:29:45 guenther Exp $ */
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/*-
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* Copyright (c) 1996 The NetBSD Foundation, Inc.
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@ -287,7 +287,7 @@ const struct conf_variable uposix_conf_table[] =
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pathconf_row(ASYNC_IO)
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pathconf_row(PRIO_IO)
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pathconf_row(SYNC_IO)
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/*pathconf_row(TIMESTAMP_RESOLUTION)*/
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pathconf_row(TIMESTAMP_RESOLUTION)
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{ NULL }
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};
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