unix: move InotifyInit into GOARCH specific Linux files

This is a copy of http://golang.org/cl/9870 in the syscall package.

This is in preparation for arm64 support, as the arm64 Linux kernel
does not have an inotify_init system call, only inotify_init1.

Update golang/go#10150.

Change-Id: I9224a094af79adbb2f5714ad977b195d5a941eb0
Reviewed-on: https://go-review.googlesource.com/10036Reviewed-by: Rob Pike <r@golang.org>

unix/syscall_linux.go

@@ -859,7 +859,6 @@ func Getpgrp() (pid int) {
 //sysnb	Gettid() (tid int)
 //sys	Getxattr(path string, attr string, dest []byte) (sz int, err error)
 //sys	InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error)
-//sysnb	InotifyInit() (fd int, err error)
 //sysnb	InotifyInit1(flags int) (fd int, err error)
 //sysnb	InotifyRmWatch(fd int, watchdesc uint32) (success int, err error)
 //sysnb	Kill(pid int, sig syscall.Signal) (err error)

unix/syscall_linux_386.go

@@ -68,6 +68,7 @@ func Pipe2(p []int, flags int) (err error) {
 //sysnb	Geteuid() (euid int) = SYS_GETEUID32
 //sysnb	Getgid() (gid int) = SYS_GETGID32
 //sysnb	Getuid() (uid int) = SYS_GETUID32
+//sysnb	InotifyInit() (fd int, err error)
 //sys	Ioperm(from int, num int, on int) (err error)
 //sys	Iopl(level int) (err error)
 //sys	Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32

unix/syscall_linux_amd64.go

@@ -17,6 +17,7 @@ import "syscall"
 //sysnb	Getgid() (gid int)
 //sysnb	Getrlimit(resource int, rlim *Rlimit) (err error)
 //sysnb	Getuid() (uid int)
+//sysnb	InotifyInit() (fd int, err error)
 //sys	Ioperm(from int, num int, on int) (err error)
 //sys	Iopl(level int) (err error)
 //sys	Lchown(path string, uid int, gid int) (err error)

unix/syscall_linux_arm.go

@@ -88,6 +88,7 @@ func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
 //sysnb	Geteuid() (euid int) = SYS_GETEUID32
 //sysnb	Getgid() (gid int) = SYS_GETGID32
 //sysnb	Getuid() (uid int) = SYS_GETUID32
+//sysnb	InotifyInit() (fd int, err error)
 //sys	Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32
 //sys	Listen(s int, n int) (err error)
 //sys	Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64

unix/zsyscall_linux_386.go

@@ -630,17 +630,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func InotifyInit() (fd int, err error) {
-	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT, 0, 0, 0)
-	fd = int(r0)
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func InotifyInit1(flags int) (fd int, err error) {
 	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT1, uintptr(flags), 0, 0)
 	fd = int(r0)
@@ -1323,6 +1312,17 @@ func Getuid() (uid int) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func InotifyInit() (fd int, err error) {
+	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT, 0, 0, 0)
+	fd = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Ioperm(from int, num int, on int) (err error) {
 	_, _, e1 := Syscall(SYS_IOPERM, uintptr(from), uintptr(num), uintptr(on))
 	if e1 != 0 {

unix/zsyscall_linux_amd64.go

@@ -630,17 +630,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func InotifyInit() (fd int, err error) {
-	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT, 0, 0, 0)
-	fd = int(r0)
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func InotifyInit1(flags int) (fd int, err error) {
 	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT1, uintptr(flags), 0, 0)
 	fd = int(r0)
@@ -1323,6 +1312,17 @@ func Getuid() (uid int) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func InotifyInit() (fd int, err error) {
+	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT, 0, 0, 0)
+	fd = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Ioperm(from int, num int, on int) (err error) {
 	_, _, e1 := Syscall(SYS_IOPERM, uintptr(from), uintptr(num), uintptr(on))
 	if e1 != 0 {

unix/zsyscall_linux_arm.go

@@ -630,17 +630,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func InotifyInit() (fd int, err error) {
-	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT, 0, 0, 0)
-	fd = int(r0)
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func InotifyInit1(flags int) (fd int, err error) {
 	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT1, uintptr(flags), 0, 0)
 	fd = int(r0)
@@ -1472,6 +1461,17 @@ func Getuid() (uid int) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func InotifyInit() (fd int, err error) {
+	r0, _, e1 := RawSyscall(SYS_INOTIFY_INIT, 0, 0, 0)
+	fd = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Lchown(path string, uid int, gid int) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)