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syscall: don't use deprecated syscalls on linux/arm64

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Reimplement syscall wrappers for linux/arm64 in terms of supported
syscalls (or in case of Ustat make it return ENOSYS) and remove the
manually added SYS_* consts for the deprecated syscalls. Adapted from
golang.org/x/sys/unix where this is already done since CL 119655.

Change-Id: I94ab48a4645924df3822497d0575f1a1573d509f
Reviewed-on: https://go-review.googlesource.com/c/go/+/199140
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Tobias Klauser 2019-10-05 13:44:36 +02:00 • committed by Tobias Klauser
parent 6ec4c71eef
commit cedb561617
32 changed files with 965 additions and 843 deletions
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75
src/syscall/syscall_linux_arm64.go
View file

@ -4,11 +4,20 @@
package syscall
import "unsafe"
const (
_SYS_dup = SYS_DUP3
_SYS_setgroups = SYS_SETGROUPS
)
func EpollCreate(size int) (fd int, err error) {
if size <= 0 {
return -1, EINVAL
}
return EpollCreate1(0)
}
//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fstat(fd int, stat *Stat_t) (err error)
@ -85,7 +94,6 @@ func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err
}
//sysnb Gettimeofday(tv *Timeval) (err error)
//sysnb Time(t *Time_t) (tt Time_t, err error)
func setTimespec(sec, nsec int64) Timespec {
return Timespec{Sec: sec, Nsec: nsec}
@ -95,6 +103,50 @@ func setTimeval(sec, usec int64) Timeval {
return Timeval{Sec: sec, Usec: usec}
}
func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
if tv == nil {
return utimensat(dirfd, path, nil, 0)
}
ts := []Timespec{
NsecToTimespec(TimevalToNsec(tv[0])),
NsecToTimespec(TimevalToNsec(tv[1])),
}
return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}
func Time(t *Time_t) (Time_t, error) {
var tv Timeval
err := Gettimeofday(&tv)
if err != nil {
return 0, err
}
if t != nil {
*t = Time_t(tv.Sec)
}
return Time_t(tv.Sec), nil
}
func Utime(path string, buf *Utimbuf) error {
tv := []Timeval{
{Sec: buf.Actime},
{Sec: buf.Modtime},
}
return Utimes(path, tv)
}
func utimes(path string, tv *[2]Timeval) (err error) {
if tv == nil {
return utimensat(_AT_FDCWD, path, nil, 0)
}
ts := []Timespec{
NsecToTimespec(TimevalToNsec(tv[0])),
NsecToTimespec(TimevalToNsec(tv[1])),
}
return utimensat(_AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}
func Pipe(p []int) (err error) {
if len(p) != 2 {
return EINVAL
@ -139,20 +191,11 @@ func InotifyInit() (fd int, err error) {
return InotifyInit1(0)
}
// TODO(dfc): constants that should be in zsysnum_linux_arm64.go, remove
// these when the deprecated syscalls that the syscall package relies on
// are removed.
const (
SYS_GETPGRP = 1060
SYS_UTIMES = 1037
SYS_FUTIMESAT = 1066
SYS_PAUSE = 1061
SYS_USTAT = 1070
SYS_UTIME = 1063
SYS_LCHOWN = 1032
SYS_TIME = 1062
SYS_EPOLL_CREATE = 1042
SYS_EPOLL_WAIT = 1069
)
//sys ppoll(fds *pollFd, nfds int, timeout *Timespec, sigmask *sigset_t) (n int, err error)
func Pause() error {
_, err := ppoll(nil, 0, nil, nil)
return err
}
func rawVforkSyscall(trap, a1 uintptr) (r1 uintptr, err Errno)