syscall: rename close to closeFD

...to avoid conflicts with the predeclared close function.

Change-Id: If6a19a004c390f4e0795ec207c72caa79a7281f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/421934
Run-TryBot: Ian Lance Taylor <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Run-TryBot: Ian Lance Taylor <[email protected]>
Reviewed-by: Tobias Klauser <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
Reviewed-by: Brad Fitzpatrick <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: ianlancetaylor

src/runtime/syscall_aix.go

@@ -127,9 +127,9 @@ func syscall_chroot1(path uintptr) (err uintptr) {
 
 // like close, but must not split stack, for fork.
 //
-//go:linkname syscall_close syscall.close
+//go:linkname syscall_closeFD syscall.closeFD
 //go:nosplit
-func syscall_close(fd int32) int32 {
+func syscall_closeFD(fd int32) int32 {
 	_, err := syscall1(&libc_close, uintptr(fd))
 	return int32(err)
 }

src/syscall/asm_solaris_amd64.s

@@ -20,7 +20,7 @@ TEXT ·chdir(SB),NOSPLIT,$0
 TEXT ·chroot1(SB),NOSPLIT,$0
 	JMP	runtime·syscall_chroot(SB)
 
-TEXT ·close(SB),NOSPLIT,$0
+TEXT ·closeFD(SB),NOSPLIT,$0
 	JMP	runtime·syscall_close(SB)
 
 TEXT ·dup2child(SB),NOSPLIT,$0

src/syscall/exec_libc.go

@@ -43,7 +43,7 @@ func runtime_AfterForkInChild()
 
 func chdir(path uintptr) (err Errno)
 func chroot1(path uintptr) (err Errno)
-func close(fd uintptr) (err Errno)
+func closeFD(fd uintptr) (err Errno)
 func dup2child(old uintptr, new uintptr) (val uintptr, err Errno)
 func execve(path uintptr, argv uintptr, envp uintptr) (err Errno)
 func exit(code uintptr)
@@ -240,7 +240,7 @@ func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr
 	// Pass 2: dup fd[i] down onto i.
 	for i = 0; i < len(fd); i++ {
 		if fd[i] == -1 {
-			close(uintptr(i))
+			closeFD(uintptr(i))
 			continue
 		}
 		if fd[i] == int(i) {
@@ -265,7 +265,7 @@ func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr
 	// Programs that know they inherit fds >= 3 will need
 	// to set them close-on-exec.
 	for i = len(fd); i < 3; i++ {
-		close(uintptr(i))
+		closeFD(uintptr(i))
 	}
 
 	// Detach fd 0 from tty