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Replace direct waitid syscall with unix.Waitid

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This also replaces the PPidFD constant with the definition in
x/sys/unix

Signed-off-by: Danny Canter <danny@dcantah.dev>
This commit is contained in:
Danny Canter 2024-04-10 05:52:43 -07:00
parent 27dfb0d09e
commit ad584ebecb
1 changed files with 4 additions and 8 deletions
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12
core/mount/mount_idmapped_linux.go
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@ -190,17 +190,13 @@ func getUsernsFD(uidMaps, gidMaps []syscall.SysProcIDMap) (_usernsFD *os.File, r
}
func pidfdWaitid(pidFD *os.File) error {
// https://elixir.bootlin.com/linux/v5.4.258/source/include/uapi/linux/wait.h#L20
const PPidFD = 3
var e syscall.Errno
for {
_, _, e = syscall.Syscall6(syscall.SYS_WAITID, PPidFD, pidFD.Fd(), 0, syscall.WEXITED, 0, 0)
if e != syscall.EINTR {
break
err := unix.Waitid(unix.P_PIDFD, int(pidFD.Fd()), nil, unix.WEXITED, nil)
if err == unix.EINTR {
continue
}
return err
}
return e
}
var (