const golang.org/x/sys/unix.F_SETFD
2 uses
golang.org/x/sys/unix (current package)
syscall_unix.go#L537: func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) }
zerrors_linux.go#L1334: F_SETFD = 0x2
The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)