16     sys(sys), fd(sys->open(pathname, flags))  in Fd()
18     if (fd < 0)  in Fd()
26     int fd = sys->dup(oldfd);  in dup()  local
27     if (fd < 0)  in dup()
31     return fd;  in dup()
34 Fd::Fd(int fd, const Sys* sys) : sys(sys), fd(dup(fd, sys)) {}  in Fd()  argument
36 Fd::Fd(int fd, std::false_type, const Sys* sys) : sys(sys), fd(fd) {}  in Fd()  argument
50 Fd::Fd(const Fd& other) : sys(other.sys), fd(dup(other.fd, sys)) {}  in Fd()
58         fd = dup(other.fd, sys);  in operator =()
63 Fd::Fd(Fd&& other) : sys(other.sys), fd(std::move(other.fd))  in Fd()
65     other.fd = -1;  in Fd()
74         fd = std::move(other.fd);  in operator =()
75         other.fd = -1;  in operator =()
82     return fd;  in operator *()
104     int r = sys->fcntl_setfl(fd, flags);  in setFlags()
113     int flags = sys->fcntl_getfl(fd);  in getFlags()
123     if (fd < 0)  in reset()
128     int ret = sys->close(fd);  in reset()
129     fd = -1;  in reset()