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50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
// +build !windows
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package restic
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import (
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"os"
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"os/user"
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"strconv"
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"syscall"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/debug"
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)
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// uidGidInt returns uid, gid of the user as a number.
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func uidGidInt(u user.User) (uid, gid uint32, err error) {
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var ui, gi int64
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ui, err = strconv.ParseInt(u.Uid, 10, 32)
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if err != nil {
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return uid, gid, errors.Wrap(err, "ParseInt")
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}
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gi, err = strconv.ParseInt(u.Gid, 10, 32)
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if err != nil {
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return uid, gid, errors.Wrap(err, "ParseInt")
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}
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uid = uint32(ui)
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gid = uint32(gi)
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return
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}
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// checkProcess will check if the process retaining the lock
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// exists and responds to SIGHUP signal.
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// Returns true if the process exists and responds.
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func (l Lock) processExists() bool {
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proc, err := os.FindProcess(l.PID)
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if err != nil {
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debug.Log("error searching for process %d: %v\n", l.PID, err)
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return false
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}
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defer proc.Release()
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debug.Log("sending SIGHUP to process %d\n", l.PID)
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err = proc.Signal(syscall.SIGHUP)
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if err != nil {
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debug.Log("signal error: %v, lock is probably stale\n", err)
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return false
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}
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return true
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}
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