unix: add additional file mode bit constants from sys/stat.h on Solaris

Also generate the constants using mkerrors.sh instead of having to list
each of them manually in types_solaris.go

In order to avoid _*_MAGIC constants being generated, also adjust the
corresponding rule in mkerrors.sh

Change-Id: If9193b12c2a2ec3b509a324be78329fee35a240d
Reviewed-on: https://go-review.googlesource.com/130355
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

unix/mkerrors.sh

@@ -296,6 +296,7 @@ includes_SunOS='
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/sockio.h>
+#include <sys/stat.h>
 #include <sys/mman.h>
 #include <sys/wait.h>
 #include <sys/ioctl.h>
@@ -437,7 +438,7 @@ ccflags="$@"
 		$2 ~ /^SECCOMP_MODE_/ ||
 		$2 ~ /^SPLICE_/ ||
 		$2 !~ /^AUDIT_RECORD_MAGIC/ &&
-		$2 ~ /^[A-Z0-9_]+_MAGIC2?$/ ||
+		$2 ~ /^[A-Z][A-Z0-9_]+_MAGIC2?$/ ||
 		$2 ~ /^(VM|VMADDR)_/ ||
 		$2 ~ /^IOCTL_VM_SOCKETS_/ ||
 		$2 ~ /^(TASKSTATS|TS)_/ ||

unix/types_solaris.go

@@ -118,23 +118,6 @@ type _Gid_t C.gid_t
 
 // Files
 
-const ( // Directory mode bits
-	S_IFMT   = C.S_IFMT
-	S_IFIFO  = C.S_IFIFO
-	S_IFCHR  = C.S_IFCHR
-	S_IFDIR  = C.S_IFDIR
-	S_IFBLK  = C.S_IFBLK
-	S_IFREG  = C.S_IFREG
-	S_IFLNK  = C.S_IFLNK
-	S_IFSOCK = C.S_IFSOCK
-	S_ISUID  = C.S_ISUID
-	S_ISGID  = C.S_ISGID
-	S_ISVTX  = C.S_ISVTX
-	S_IRUSR  = C.S_IRUSR
-	S_IWUSR  = C.S_IWUSR
-	S_IXUSR  = C.S_IXUSR
-)
-
 type Stat_t C.struct_stat
 
 type Flock_t C.struct_flock

unix/zerrors_solaris_amd64.go

@@ -996,6 +996,39 @@ const (
 	SO_USELOOPBACK                = 0x40
 	SO_VRRP                       = 0x1017
 	SO_WROFF                      = 0x2
+	S_ENFMT                       = 0x400
+	S_IAMB                        = 0x1ff
+	S_IEXEC                       = 0x40
+	S_IFBLK                       = 0x6000
+	S_IFCHR                       = 0x2000
+	S_IFDIR                       = 0x4000
+	S_IFDOOR                      = 0xd000
+	S_IFIFO                       = 0x1000
+	S_IFLNK                       = 0xa000
+	S_IFMT                        = 0xf000
+	S_IFNAM                       = 0x5000
+	S_IFPORT                      = 0xe000
+	S_IFREG                       = 0x8000
+	S_IFSOCK                      = 0xc000
+	S_INSEM                       = 0x1
+	S_INSHD                       = 0x2
+	S_IREAD                       = 0x100
+	S_IRGRP                       = 0x20
+	S_IROTH                       = 0x4
+	S_IRUSR                       = 0x100
+	S_IRWXG                       = 0x38
+	S_IRWXO                       = 0x7
+	S_IRWXU                       = 0x1c0
+	S_ISGID                       = 0x400
+	S_ISUID                       = 0x800
+	S_ISVTX                       = 0x200
+	S_IWGRP                       = 0x10
+	S_IWOTH                       = 0x2
+	S_IWRITE                      = 0x80
+	S_IWUSR                       = 0x80
+	S_IXGRP                       = 0x8
+	S_IXOTH                       = 0x1
+	S_IXUSR                       = 0x40
 	TAB0                          = 0x0
 	TAB1                          = 0x800
 	TAB2                          = 0x1000
@@ -1102,6 +1135,8 @@ const (
 	TIOCSTOP                      = 0x746f
 	TIOCSWINSZ                    = 0x5467
 	TOSTOP                        = 0x100
+	UTIME_NOW                     = -0x1
+	UTIME_OMIT                    = -0x2
 	VCEOF                         = 0x8
 	VCEOL                         = 0x9
 	VDISCARD                      = 0xd

unix/ztypes_solaris_amd64.go

@@ -75,23 +75,6 @@ type Rlimit struct {
 
 type _Gid_t uint32
 
-const (
-	S_IFMT   = 0xf000
-	S_IFIFO  = 0x1000
-	S_IFCHR  = 0x2000
-	S_IFDIR  = 0x4000
-	S_IFBLK  = 0x6000
-	S_IFREG  = 0x8000
-	S_IFLNK  = 0xa000
-	S_IFSOCK = 0xc000
-	S_ISUID  = 0x800
-	S_ISGID  = 0x400
-	S_ISVTX  = 0x200
-	S_IRUSR  = 0x100
-	S_IWUSR  = 0x80
-	S_IXUSR  = 0x40
-)
-
 type Stat_t struct {
 	Dev     uint64
 	Ino     uint64