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@

11 files changed, 76 insertions, 34 deletions

diff --git a/lib/libc/sys/pathconf.2 b/lib/libc/sys/pathconf.2
index 4b022be7a4b..effa98da931 100644
--- a/lib/libc/sys/pathconf.2
+++ b/lib/libc/sys/pathconf.2
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: pathconf.2,v 1.17 2012/07/17 06:30:31 matthew Exp $
+.\"	$OpenBSD: pathconf.2,v 1.18 2013/03/28 03:29:45 guenther Exp $
 .\"	$NetBSD: pathconf.2,v 1.2 1995/02/27 12:35:22 cgd Exp $
 .\"
 .\" Copyright (c) 1993
@@ -30,7 +30,7 @@
 .\"
 .\"	@(#)pathconf.2	8.1 (Berkeley) 6/4/93
 .\"
-.Dd $Mdocdate: July 17 2012 $
+.Dd $Mdocdate: March 28 2013 $
 .Dt PATHCONF 2
 .Os
 .Sh NAME
@@ -129,6 +129,8 @@ Recommended file transfer buffer alignment.
 Maximum number of bytes in a symbolic link.
 .It Dv _PC_SYNC_IO
 Returns 1 if synchronized I/O is supported, otherwise 0.
+.It Dv _PC_TIMESTAMP_RESOLUTION
+The resolution in nanoseconds of file timestamps.
 .El
 .Sh RETURN VALUES
 If the call to
diff --git a/sys/isofs/cd9660/cd9660_vnops.c b/sys/isofs/cd9660/cd9660_vnops.c
index c0c16032058..90351762669 100644
--- a/sys/isofs/cd9660/cd9660_vnops.c
+++ b/sys/isofs/cd9660/cd9660_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cd9660_vnops.c,v 1.58 2013/03/28 02:08:39 guenther Exp $	*/
+/*	$OpenBSD: cd9660_vnops.c,v 1.59 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: cd9660_vnops.c,v 1.42 1997/10/16 23:56:57 christos Exp $	*/
 
 /*-
@@ -882,6 +882,9 @@ cd9660_pathconf(void *v)
 	case _PC_NO_TRUNC:
 		*ap->a_retval = 1;
 		break;
+	case _PC_TIMESTAMP_RESOLUTION:
+		*ap->a_retval = 1000000000;	/* one billion nanoseconds */
+		break;
 	default:
 		error = EINVAL;
 		break;
diff --git a/sys/kern/spec_vnops.c b/sys/kern/spec_vnops.c
index 9c54d61ee7d..d92dd34210d 100644
--- a/sys/kern/spec_vnops.c
+++ b/sys/kern/spec_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: spec_vnops.c,v 1.70 2013/03/28 02:08:39 guenther Exp $	*/
+/*	$OpenBSD: spec_vnops.c,v 1.71 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: spec_vnops.c,v 1.29 1996/04/22 01:42:38 christos Exp $	*/
 
 /*
@@ -623,6 +623,9 @@ spec_pathconf(void *v)
 	case _PC_VDISABLE:
 		*ap->a_retval = _POSIX_VDISABLE;
 		break;
+	case _PC_TIMESTAMP_RESOLUTION:
+		*ap->a_retval = 1;
+		break;
 	default:
 		error = EINVAL;
 		break;
diff --git a/sys/miscfs/fifofs/fifo_vnops.c b/sys/miscfs/fifofs/fifo_vnops.c
index d52795d8732..c6995b89379 100644
--- a/sys/miscfs/fifofs/fifo_vnops.c
+++ b/sys/miscfs/fifofs/fifo_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fifo_vnops.c,v 1.38 2013/03/28 02:08:39 guenther Exp $	*/
+/*	$OpenBSD: fifo_vnops.c,v 1.39 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: fifo_vnops.c,v 1.18 1996/03/16 23:52:42 christos Exp $	*/
 
 /*
@@ -417,6 +417,9 @@ fifo_pathconf(void *v)
 	case _PC_CHOWN_RESTRICTED:
 		*ap->a_retval = 1;
 		break;
+	case _PC_TIMESTAMP_RESOLUTION:
+		*ap->a_retval = 1;
+		break;
 	default:
 		error = EINVAL;
 		break;
diff --git a/sys/msdosfs/msdosfs_vnops.c b/sys/msdosfs/msdosfs_vnops.c
index 74e8d1a7704..805db9e2309 100644
--- a/sys/msdosfs/msdosfs_vnops.c
+++ b/sys/msdosfs/msdosfs_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: msdosfs_vnops.c,v 1.84 2013/03/28 02:08:39 guenther Exp $	*/
+/*	$OpenBSD: msdosfs_vnops.c,v 1.85 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: msdosfs_vnops.c,v 1.63 1997/10/17 11:24:19 ws Exp $	*/
 
 /*-
@@ -1888,6 +1888,9 @@ msdosfs_pathconf(void *v)
 	case _PC_NO_TRUNC:
 		*ap->a_retval = 0;
 		break;
+	case _PC_TIMESTAMP_RESOLUTION:
+		*ap->a_retval = 2000000000;	/* 2 billion nanoseconds */
+		break;
 	default:
 		error = EINVAL;
 		break;
diff --git a/sys/nfs/nfs_vnops.c b/sys/nfs/nfs_vnops.c
index 24b0c78d7c6..af217384554 100644
--- a/sys/nfs/nfs_vnops.c
+++ b/sys/nfs/nfs_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: nfs_vnops.c,v 1.143 2013/03/28 02:27:27 tedu Exp $	*/
+/*	$OpenBSD: nfs_vnops.c,v 1.144 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: nfs_vnops.c,v 1.62.4.1 1996/07/08 20:26:52 jtc Exp $	*/
 
 /*
@@ -2987,6 +2987,9 @@ nfs_pathconf(void *v)
 	case _PC_2_SYMLINKS:
 		*ap->a_retval = 1;
 		break;
+	case _PC_TIMESTAMP_RESOLUTION:
+		*ap->a_retval = NFS_ISV3(ap->a_vp) ? 1 : 1000;
+		break;
 	default:
 		error = EINVAL;
 		break;
diff --git a/sys/sys/unistd.h b/sys/sys/unistd.h
index ee35db7e48c..ac174567cdd 100644
--- a/sys/sys/unistd.h
+++ b/sys/sys/unistd.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: unistd.h,v 1.27 2013/03/28 02:08:39 guenther Exp $	*/
+/*	$OpenBSD: unistd.h,v 1.28 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: unistd.h,v 1.10 1994/06/29 06:46:06 cgd Exp $	*/
 
 /*
@@ -80,25 +80,26 @@ struct __tfork51 {
 /* the pathconf(2) variable values are part of the ABI */
 
 /* configurable pathname variables */
-#define	_PC_LINK_MAX		 1
-#define	_PC_MAX_CANON		 2
-#define	_PC_MAX_INPUT		 3
-#define	_PC_NAME_MAX		 4
-#define	_PC_PATH_MAX		 5
-#define	_PC_PIPE_BUF		 6
-#define	_PC_CHOWN_RESTRICTED	 7
-#define	_PC_NO_TRUNC		 8
-#define	_PC_VDISABLE		 9
-#define	_PC_2_SYMLINKS		10
-#define	_PC_ALLOC_SIZE_MIN	11
-#define	_PC_ASYNC_IO		12
-#define	_PC_FILESIZEBITS	13
-#define	_PC_PRIO_IO		14
-#define	_PC_REC_INCR_XFER_SIZE	15
-#define	_PC_REC_MAX_XFER_SIZE	16
-#define	_PC_REC_MIN_XFER_SIZE	17
-#define	_PC_REC_XFER_ALIGN	18
-#define	_PC_SYMLINK_MAX		19
-#define	_PC_SYNC_IO		20
+#define	_PC_LINK_MAX			 1
+#define	_PC_MAX_CANON			 2
+#define	_PC_MAX_INPUT			 3
+#define	_PC_NAME_MAX			 4
+#define	_PC_PATH_MAX			 5
+#define	_PC_PIPE_BUF			 6
+#define	_PC_CHOWN_RESTRICTED		 7
+#define	_PC_NO_TRUNC			 8
+#define	_PC_VDISABLE			 9
+#define	_PC_2_SYMLINKS			10
+#define	_PC_ALLOC_SIZE_MIN		11
+#define	_PC_ASYNC_IO			12
+#define	_PC_FILESIZEBITS		13
+#define	_PC_PRIO_IO			14
+#define	_PC_REC_INCR_XFER_SIZE		15
+#define	_PC_REC_MAX_XFER_SIZE		16
+#define	_PC_REC_MIN_XFER_SIZE		17
+#define	_PC_REC_XFER_ALIGN		18
+#define	_PC_SYMLINK_MAX			19
+#define	_PC_SYNC_IO			20
+#define	_PC_TIMESTAMP_RESOLUTION	21
 
 #endif /* !_SYS_UNISTD_H_ */
diff --git a/sys/ufs/ext2fs/ext2fs_extern.h b/sys/ufs/ext2fs/ext2fs_extern.h
index 8edd0c47eeb..b44b57b743b 100644
--- a/sys/ufs/ext2fs/ext2fs_extern.h
+++ b/sys/ufs/ext2fs/ext2fs_extern.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ext2fs_extern.h,v 1.29 2010/12/21 20:14:44 thib Exp $	*/
+/*	$OpenBSD: ext2fs_extern.h,v 1.30 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: ext2fs_extern.h,v 1.1 1997/06/11 09:33:55 bouyer Exp $	*/
 
 /*-
@@ -140,6 +140,7 @@ int ext2fs_mkdir(void *);
 int ext2fs_rmdir(void *);
 int ext2fs_symlink(void *);
 int ext2fs_readlink(void *);
+int ext2fs_pathconf(void *);
 int ext2fs_advlock(void *);
 int ext2fs_makeinode(int, struct vnode *, struct vnode **,
                      struct componentname *cnp);
diff --git a/sys/ufs/ext2fs/ext2fs_vnops.c b/sys/ufs/ext2fs/ext2fs_vnops.c
index c320d7c7096..65370bfc7e9 100644
--- a/sys/ufs/ext2fs/ext2fs_vnops.c
+++ b/sys/ufs/ext2fs/ext2fs_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ext2fs_vnops.c,v 1.61 2011/07/04 20:35:35 deraadt Exp $	*/
+/*	$OpenBSD: ext2fs_vnops.c,v 1.62 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: ext2fs_vnops.c,v 1.1 1997/06/11 09:34:09 bouyer Exp $	*/
 
 /*
@@ -1121,6 +1121,26 @@ ext2fs_readlink(void *v)
 }
 
 /*
+ * Return POSIX pathconf information applicable to ext2 filesystems.
+ */
+int
+ext2fs_pathconf(void *v)
+{
+	struct vop_pathconf_args *ap = v;
+	int error = 0;
+
+	switch (ap->a_name) {
+	case _PC_TIMESTAMP_RESOLUTION:
+		*ap->a_retval = 1000000000;	/* 1 billion nanoseconds */
+		break;
+	default:
+		return (ufs_pathconf(v));
+	}
+
+	return (error);
+}
+
+/*
  * Advisory record locking support
  */
 int
@@ -1286,7 +1306,7 @@ struct vops ext2fs_vops = {
         .vop_strategy   = ufs_strategy,
         .vop_print      = ufs_print,
         .vop_islocked   = ufs_islocked,
-        .vop_pathconf   = ufs_pathconf,
+        .vop_pathconf   = ext2fs_pathconf,
         .vop_advlock    = ext2fs_advlock,
         .vop_bwrite     = vop_generic_bwrite
 };
diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c
index 2f35cc6b20c..e321b2e94f0 100644
--- a/sys/ufs/ufs/ufs_vnops.c
+++ b/sys/ufs/ufs/ufs_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ufs_vnops.c,v 1.105 2013/03/28 02:08:39 guenther Exp $	*/
+/*	$OpenBSD: ufs_vnops.c,v 1.106 2013/03/28 03:29:44 guenther Exp $	*/
 /*	$NetBSD: ufs_vnops.c,v 1.18 1996/05/11 18:28:04 mycroft Exp $	*/
 
 /*
@@ -1755,6 +1755,9 @@ ufs_pathconf(void *v)
 	case _PC_2_SYMLINKS:
 		*ap->a_retval = 1;
 		break;
+	case _PC_TIMESTAMP_RESOLUTION:
+		*ap->a_retval = 1;
+		break;
 	default:
 		error = EINVAL;
 		break;
diff --git a/usr.bin/getconf/getconf.c b/usr.bin/getconf/getconf.c
index c2a5378ecb4..b4593c705e2 100644
--- a/usr.bin/getconf/getconf.c
+++ b/usr.bin/getconf/getconf.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: getconf.c,v 1.15 2013/03/07 08:54:53 guenther Exp $	*/
+/*	$OpenBSD: getconf.c,v 1.16 2013/03/28 03:29:45 guenther Exp $	*/
 
 /*-
  * Copyright (c) 1996 The NetBSD Foundation, Inc.
@@ -287,7 +287,7 @@ const struct conf_variable uposix_conf_table[] =
   pathconf_row(ASYNC_IO)
   pathconf_row(PRIO_IO)
   pathconf_row(SYNC_IO)
-  /*pathconf_row(TIMESTAMP_RESOLUTION)*/
+  pathconf_row(TIMESTAMP_RESOLUTION)
 
   { NULL }
 };