unix: add UTIME_* constants on Linux

They might be used as special values in struct Timespec. See
http://man7.org/linux/man-pages/man2/utimensat.2.html for details.

Change-Id: I1c2d6d7731ca7f077d033e51ee6421a4f2cfbb89
Reviewed-on: https://go-review.googlesource.com/72376
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

unix/mkerrors.sh

@@ -420,6 +420,7 @@ ccflags="$@"
 		$2 ~ /^(VM|VMADDR)_/ ||
 		$2 ~ /^(TASKSTATS|TS)_/ ||
 		$2 ~ /^GENL_/ ||
+		$2 ~ /^UTIME_/ ||
 		$2 ~ /^XATTR_(CREATE|REPLACE)/ ||
 		$2 !~ "WMESGLEN" &&
 		$2 ~ /^W[A-Z0-9]+$/ ||

unix/zerrors_linux_386.go

@@ -1842,6 +1842,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x400454d8
 	TUNSETVNETLE                         = 0x400454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x4
 	VEOL                                 = 0xb

unix/zerrors_linux_amd64.go

@@ -1843,6 +1843,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x400454d8
 	TUNSETVNETLE                         = 0x400454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x4
 	VEOL                                 = 0xb

unix/zerrors_linux_arm.go

@@ -1847,6 +1847,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x400454d8
 	TUNSETVNETLE                         = 0x400454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x4
 	VEOL                                 = 0xb

unix/zerrors_linux_arm64.go

@@ -1833,6 +1833,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x400454d8
 	TUNSETVNETLE                         = 0x400454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x4
 	VEOL                                 = 0xb

unix/zerrors_linux_mips.go

@@ -1846,6 +1846,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x800454d8
 	TUNSETVNETLE                         = 0x800454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x10
 	VEOL                                 = 0x11

unix/zerrors_linux_mips64.go

@@ -1846,6 +1846,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x800454d8
 	TUNSETVNETLE                         = 0x800454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x10
 	VEOL                                 = 0x11

unix/zerrors_linux_mips64le.go

@@ -1846,6 +1846,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x800454d8
 	TUNSETVNETLE                         = 0x800454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x10
 	VEOL                                 = 0x11

unix/zerrors_linux_mipsle.go

@@ -1846,6 +1846,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x800454d8
 	TUNSETVNETLE                         = 0x800454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x10
 	VEOL                                 = 0x11

unix/zerrors_linux_ppc64.go

@@ -1904,6 +1904,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x800454d8
 	TUNSETVNETLE                         = 0x800454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0x10
 	VEOF                                 = 0x4
 	VEOL                                 = 0x6

unix/zerrors_linux_ppc64le.go

@@ -1904,6 +1904,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x800454d8
 	TUNSETVNETLE                         = 0x800454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0x10
 	VEOF                                 = 0x4
 	VEOL                                 = 0x6

unix/zerrors_linux_s390x.go

@@ -1904,6 +1904,8 @@ const (
 	TUNSETVNETHDRSZ                      = 0x400454d8
 	TUNSETVNETLE                         = 0x400454dc
 	UMOUNT_NOFOLLOW                      = 0x8
+	UTIME_NOW                            = 0x3fffffff
+	UTIME_OMIT                           = 0x3ffffffe
 	VDISCARD                             = 0xd
 	VEOF                                 = 0x4
 	VEOL                                 = 0xb