pid_t
child_open_uid(const uschar **argv, const uschar **envp, int newumask,
uid_t *newuid, gid_t *newgid, int *infdptr, int *outfdptr, uschar *wd,
pid_t
child_open_uid(const uschar **argv, const uschar **envp, int newumask,
uid_t *newuid, gid_t *newgid, int *infdptr, int *outfdptr, uschar *wd,