rustix/backend/linux_raw/
c.rs

1//! Adapt the Linux API to resemble a POSIX-style libc API.
2//!
3//! The linux_raw backend doesn't use actual libc; this just defines certain
4//! types that are convenient to have defined.
5
6#![allow(unused_imports)]
7#![allow(non_camel_case_types)]
8
9pub(crate) type size_t = usize;
10pub(crate) use linux_raw_sys::ctypes::*;
11pub(crate) use linux_raw_sys::errno::{EBADF, EINVAL};
12pub(crate) use linux_raw_sys::general::{__kernel_fd_set as fd_set, __FD_SETSIZE as FD_SETSIZE};
13pub(crate) use linux_raw_sys::ioctl::{FIONBIO, FIONREAD};
14// Import the kernel's `uid_t` and `gid_t` if they're 32-bit.
15#[cfg(not(any(target_arch = "arm", target_arch = "sparc", target_arch = "x86")))]
16pub(crate) use linux_raw_sys::general::{__kernel_gid_t as gid_t, __kernel_uid_t as uid_t};
17pub(crate) use linux_raw_sys::general::{
18    __kernel_pid_t as pid_t, __kernel_time64_t as time_t, __kernel_timespec as timespec, iovec,
19    O_CLOEXEC, O_NOCTTY, O_NONBLOCK, O_RDWR,
20};
21
22#[cfg(feature = "event")]
23#[cfg(test)]
24pub(crate) use linux_raw_sys::general::epoll_event;
25
26#[cfg(any(
27    feature = "fs",
28    all(
29        not(feature = "use-libc-auxv"),
30        not(feature = "use-explicitly-provided-auxv"),
31        any(
32            feature = "param",
33            feature = "process",
34            feature = "runtime",
35            feature = "time",
36            target_arch = "x86",
37        )
38    )
39))]
40pub(crate) use linux_raw_sys::general::{
41    AT_FDCWD, NFS_SUPER_MAGIC, O_LARGEFILE, PROC_SUPER_MAGIC, UTIME_NOW, UTIME_OMIT, XATTR_CREATE,
42    XATTR_REPLACE,
43};
44
45pub(crate) use linux_raw_sys::ioctl::{BLKPBSZGET, BLKSSZGET, FICLONE};
46#[cfg(target_pointer_width = "32")]
47pub(crate) use linux_raw_sys::ioctl::{FS_IOC32_GETFLAGS, FS_IOC32_SETFLAGS};
48#[cfg(target_pointer_width = "64")]
49pub(crate) use linux_raw_sys::ioctl::{FS_IOC_GETFLAGS, FS_IOC_SETFLAGS};
50
51#[cfg(feature = "io_uring")]
52pub(crate) use linux_raw_sys::{general::open_how, io_uring::*};
53
54#[cfg(feature = "net")]
55pub(crate) use linux_raw_sys::{
56    cmsg_macros::*,
57    general::{O_CLOEXEC as SOCK_CLOEXEC, O_NONBLOCK as SOCK_NONBLOCK},
58    if_ether::*,
59    net::{
60        linger, msghdr, sockaddr, sockaddr_in, sockaddr_in6, sockaddr_un, socklen_t, AF_DECnet,
61        __kernel_sa_family_t as sa_family_t, __kernel_sockaddr_storage as sockaddr_storage,
62        cmsghdr, in6_addr, in_addr, ip_mreq, ip_mreq_source, ip_mreqn, ipv6_mreq, AF_APPLETALK,
63        AF_ASH, AF_ATMPVC, AF_ATMSVC, AF_AX25, AF_BLUETOOTH, AF_BRIDGE, AF_CAN, AF_ECONET,
64        AF_IEEE802154, AF_INET, AF_INET6, AF_IPX, AF_IRDA, AF_ISDN, AF_IUCV, AF_KEY, AF_LLC,
65        AF_NETBEUI, AF_NETLINK, AF_NETROM, AF_PACKET, AF_PHONET, AF_PPPOX, AF_RDS, AF_ROSE,
66        AF_RXRPC, AF_SECURITY, AF_SNA, AF_TIPC, AF_UNIX, AF_UNSPEC, AF_WANPIPE, AF_X25, AF_XDP,
67        IP6T_SO_ORIGINAL_DST, IPPROTO_FRAGMENT, IPPROTO_ICMPV6, IPPROTO_MH, IPPROTO_ROUTING,
68        IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP, IPV6_FREEBIND, IPV6_MULTICAST_HOPS,
69        IPV6_MULTICAST_LOOP, IPV6_RECVTCLASS, IPV6_TCLASS, IPV6_UNICAST_HOPS, IPV6_V6ONLY,
70        IP_ADD_MEMBERSHIP, IP_ADD_SOURCE_MEMBERSHIP, IP_DROP_MEMBERSHIP, IP_DROP_SOURCE_MEMBERSHIP,
71        IP_FREEBIND, IP_MULTICAST_LOOP, IP_MULTICAST_TTL, IP_RECVTOS, IP_TOS, IP_TTL,
72        MSG_CMSG_CLOEXEC, MSG_CONFIRM, MSG_DONTROUTE, MSG_DONTWAIT, MSG_EOR, MSG_ERRQUEUE,
73        MSG_MORE, MSG_NOSIGNAL, MSG_OOB, MSG_PEEK, MSG_TRUNC, MSG_WAITALL, SCM_CREDENTIALS,
74        SCM_RIGHTS, SHUT_RD, SHUT_RDWR, SHUT_WR, SOCK_DGRAM, SOCK_RAW, SOCK_RDM, SOCK_SEQPACKET,
75        SOCK_STREAM, SOL_SOCKET, SOL_XDP, SO_ACCEPTCONN, SO_BROADCAST, SO_COOKIE, SO_DOMAIN,
76        SO_ERROR, SO_INCOMING_CPU, SO_KEEPALIVE, SO_LINGER, SO_OOBINLINE, SO_ORIGINAL_DST,
77        SO_PASSCRED, SO_PROTOCOL, SO_RCVBUF, SO_RCVBUFFORCE, SO_RCVTIMEO_NEW,
78        SO_RCVTIMEO_NEW as SO_RCVTIMEO, SO_RCVTIMEO_OLD, SO_REUSEADDR, SO_REUSEPORT, SO_SNDBUF,
79        SO_SNDTIMEO_NEW, SO_SNDTIMEO_NEW as SO_SNDTIMEO, SO_SNDTIMEO_OLD, SO_TYPE, TCP_CONGESTION,
80        TCP_CORK, TCP_KEEPCNT, TCP_KEEPIDLE, TCP_KEEPINTVL, TCP_NODELAY, TCP_QUICKACK,
81        TCP_THIN_LINEAR_TIMEOUTS, TCP_USER_TIMEOUT,
82    },
83    netlink::*,
84    xdp::{
85        sockaddr_xdp, xdp_desc, xdp_mmap_offsets, xdp_mmap_offsets_v1, xdp_options,
86        xdp_ring_offset, xdp_ring_offset_v1, xdp_statistics, xdp_statistics_v1, xdp_umem_reg,
87        xdp_umem_reg_v1, XDP_COPY, XDP_MMAP_OFFSETS, XDP_OPTIONS, XDP_OPTIONS_ZEROCOPY,
88        XDP_PGOFF_RX_RING, XDP_PGOFF_TX_RING, XDP_PKT_CONTD, XDP_RING_NEED_WAKEUP, XDP_RX_RING,
89        XDP_SHARED_UMEM, XDP_STATISTICS, XDP_TX_RING, XDP_UMEM_COMPLETION_RING, XDP_UMEM_FILL_RING,
90        XDP_UMEM_PGOFF_COMPLETION_RING, XDP_UMEM_PGOFF_FILL_RING, XDP_UMEM_REG,
91        XDP_UMEM_UNALIGNED_CHUNK_FLAG, XDP_USE_NEED_WAKEUP, XDP_USE_SG, XDP_ZEROCOPY,
92        XSK_UNALIGNED_BUF_ADDR_MASK, XSK_UNALIGNED_BUF_OFFSET_SHIFT,
93    },
94};
95
96// Cast away bindgen's `enum` type to make these consistent with the other
97// `setsockopt`/`getsockopt` level values.
98#[cfg(feature = "net")]
99pub(crate) const IPPROTO_IP: u32 = linux_raw_sys::net::IPPROTO_IP as _;
100#[cfg(feature = "net")]
101pub(crate) const IPPROTO_ICMP: u32 = linux_raw_sys::net::IPPROTO_ICMP as _;
102#[cfg(feature = "net")]
103pub(crate) const IPPROTO_IGMP: u32 = linux_raw_sys::net::IPPROTO_IGMP as _;
104#[cfg(feature = "net")]
105pub(crate) const IPPROTO_IPIP: u32 = linux_raw_sys::net::IPPROTO_IPIP as _;
106#[cfg(feature = "net")]
107pub(crate) const IPPROTO_TCP: u32 = linux_raw_sys::net::IPPROTO_TCP as _;
108#[cfg(feature = "net")]
109pub(crate) const IPPROTO_EGP: u32 = linux_raw_sys::net::IPPROTO_EGP as _;
110#[cfg(feature = "net")]
111pub(crate) const IPPROTO_PUP: u32 = linux_raw_sys::net::IPPROTO_PUP as _;
112#[cfg(feature = "net")]
113pub(crate) const IPPROTO_UDP: u32 = linux_raw_sys::net::IPPROTO_UDP as _;
114#[cfg(feature = "net")]
115pub(crate) const IPPROTO_IDP: u32 = linux_raw_sys::net::IPPROTO_IDP as _;
116#[cfg(feature = "net")]
117pub(crate) const IPPROTO_TP: u32 = linux_raw_sys::net::IPPROTO_TP as _;
118#[cfg(feature = "net")]
119pub(crate) const IPPROTO_DCCP: u32 = linux_raw_sys::net::IPPROTO_DCCP as _;
120#[cfg(feature = "net")]
121pub(crate) const IPPROTO_IPV6: u32 = linux_raw_sys::net::IPPROTO_IPV6 as _;
122#[cfg(feature = "net")]
123pub(crate) const IPPROTO_RSVP: u32 = linux_raw_sys::net::IPPROTO_RSVP as _;
124#[cfg(feature = "net")]
125pub(crate) const IPPROTO_GRE: u32 = linux_raw_sys::net::IPPROTO_GRE as _;
126#[cfg(feature = "net")]
127pub(crate) const IPPROTO_ESP: u32 = linux_raw_sys::net::IPPROTO_ESP as _;
128#[cfg(feature = "net")]
129pub(crate) const IPPROTO_AH: u32 = linux_raw_sys::net::IPPROTO_AH as _;
130#[cfg(feature = "net")]
131pub(crate) const IPPROTO_MTP: u32 = linux_raw_sys::net::IPPROTO_MTP as _;
132#[cfg(feature = "net")]
133pub(crate) const IPPROTO_BEETPH: u32 = linux_raw_sys::net::IPPROTO_BEETPH as _;
134#[cfg(feature = "net")]
135pub(crate) const IPPROTO_ENCAP: u32 = linux_raw_sys::net::IPPROTO_ENCAP as _;
136#[cfg(feature = "net")]
137pub(crate) const IPPROTO_PIM: u32 = linux_raw_sys::net::IPPROTO_PIM as _;
138#[cfg(feature = "net")]
139pub(crate) const IPPROTO_COMP: u32 = linux_raw_sys::net::IPPROTO_COMP as _;
140#[cfg(feature = "net")]
141pub(crate) const IPPROTO_SCTP: u32 = linux_raw_sys::net::IPPROTO_SCTP as _;
142#[cfg(feature = "net")]
143pub(crate) const IPPROTO_UDPLITE: u32 = linux_raw_sys::net::IPPROTO_UDPLITE as _;
144#[cfg(feature = "net")]
145pub(crate) const IPPROTO_MPLS: u32 = linux_raw_sys::net::IPPROTO_MPLS as _;
146#[cfg(feature = "net")]
147pub(crate) const IPPROTO_ETHERNET: u32 = linux_raw_sys::net::IPPROTO_ETHERNET as _;
148#[cfg(feature = "net")]
149pub(crate) const IPPROTO_RAW: u32 = linux_raw_sys::net::IPPROTO_RAW as _;
150#[cfg(feature = "net")]
151pub(crate) const IPPROTO_MPTCP: u32 = linux_raw_sys::net::IPPROTO_MPTCP as _;
152
153#[cfg(any(feature = "process", feature = "runtime"))]
154pub(crate) use linux_raw_sys::general::siginfo_t;
155
156#[cfg(any(feature = "process", feature = "runtime"))]
157pub(crate) const EXIT_SUCCESS: c_int = 0;
158#[cfg(any(feature = "process", feature = "runtime"))]
159pub(crate) const EXIT_FAILURE: c_int = 1;
160#[cfg(feature = "process")]
161pub(crate) const EXIT_SIGNALED_SIGABRT: c_int = 128 + linux_raw_sys::general::SIGABRT as c_int;
162#[cfg(feature = "runtime")]
163pub(crate) const CLONE_CHILD_SETTID: c_int = linux_raw_sys::general::CLONE_CHILD_SETTID as c_int;
164
165#[cfg(feature = "process")]
166pub(crate) use linux_raw_sys::{
167    general::{
168        CLD_CONTINUED, CLD_DUMPED, CLD_EXITED, CLD_KILLED, CLD_STOPPED, CLD_TRAPPED,
169        O_NONBLOCK as PIDFD_NONBLOCK, P_ALL, P_PGID, P_PID, P_PIDFD,
170    },
171    ioctl::TIOCSCTTY,
172};
173
174#[cfg(feature = "pty")]
175pub(crate) use linux_raw_sys::ioctl::TIOCGPTPEER;
176
177#[cfg(feature = "termios")]
178pub(crate) use linux_raw_sys::{
179    general::{
180        cc_t, speed_t, tcflag_t, termios, termios2, winsize, B0, B1000000, B110, B115200, B1152000,
181        B1200, B134, B150, B1500000, B1800, B19200, B200, B2000000, B230400, B2400, B2500000, B300,
182        B3000000, B3500000, B38400, B4000000, B460800, B4800, B50, B500000, B57600, B576000, B600,
183        B75, B921600, B9600, BOTHER, BRKINT, BS0, BS1, BSDLY, CBAUD, CBAUDEX, CIBAUD, CLOCAL,
184        CMSPAR, CR0, CR1, CR2, CR3, CRDLY, CREAD, CRTSCTS, CS5, CS6, CS7, CS8, CSIZE, CSTOPB, ECHO,
185        ECHOCTL, ECHOE, ECHOK, ECHOKE, ECHONL, ECHOPRT, EXTA, EXTB, EXTPROC, FF0, FF1, FFDLY,
186        FLUSHO, HUPCL, IBSHIFT, ICANON, ICRNL, IEXTEN, IGNBRK, IGNCR, IGNPAR, IMAXBEL, INLCR,
187        INPCK, ISIG, ISTRIP, IUCLC, IUTF8, IXANY, IXOFF, IXON, NCCS, NL0, NL1, NLDLY, NOFLSH,
188        OCRNL, OFDEL, OFILL, OLCUC, ONLCR, ONLRET, ONOCR, OPOST, PARENB, PARMRK, PARODD, PENDIN,
189        TAB0, TAB1, TAB2, TAB3, TABDLY, TCIFLUSH, TCIOFF, TCIOFLUSH, TCION, TCOFLUSH, TCOOFF,
190        TCOON, TCSADRAIN, TCSAFLUSH, TCSANOW, TOSTOP, VDISCARD, VEOF, VEOL, VEOL2, VERASE, VINTR,
191        VKILL, VLNEXT, VMIN, VQUIT, VREPRINT, VSTART, VSTOP, VSUSP, VSWTC, VT0, VT1, VTDLY, VTIME,
192        VWERASE, XCASE, XTABS,
193    },
194    ioctl::{
195        TCFLSH, TCGETS, TCGETS2, TCSBRK, TCSETS, TCSETS2, TCSETSF2, TCSETSW2, TCXONC, TIOCEXCL,
196        TIOCGPGRP, TIOCGSID, TIOCGWINSZ, TIOCNXCL, TIOCSPGRP, TIOCSWINSZ,
197    },
198};
199
200// Define our own `uid_t` and `gid_t` if the kernel's versions are not 32-bit.
201#[cfg(any(target_arch = "arm", target_arch = "sparc", target_arch = "x86"))]
202pub(crate) type uid_t = u32;
203#[cfg(any(target_arch = "arm", target_arch = "sparc", target_arch = "x86"))]
204pub(crate) type gid_t = u32;
205
206// Bindgen infers `u32` for many of these macro types which meant to be
207// used with `c_int` in the C APIs, so cast them to `c_int`.
208
209// Convert the signal constants from `u32` to `c_int`.
210pub(crate) const SIGHUP: c_int = linux_raw_sys::general::SIGHUP as _;
211pub(crate) const SIGINT: c_int = linux_raw_sys::general::SIGINT as _;
212pub(crate) const SIGQUIT: c_int = linux_raw_sys::general::SIGQUIT as _;
213pub(crate) const SIGILL: c_int = linux_raw_sys::general::SIGILL as _;
214pub(crate) const SIGTRAP: c_int = linux_raw_sys::general::SIGTRAP as _;
215pub(crate) const SIGABRT: c_int = linux_raw_sys::general::SIGABRT as _;
216pub(crate) const SIGBUS: c_int = linux_raw_sys::general::SIGBUS as _;
217pub(crate) const SIGFPE: c_int = linux_raw_sys::general::SIGFPE as _;
218pub(crate) const SIGKILL: c_int = linux_raw_sys::general::SIGKILL as _;
219pub(crate) const SIGUSR1: c_int = linux_raw_sys::general::SIGUSR1 as _;
220pub(crate) const SIGSEGV: c_int = linux_raw_sys::general::SIGSEGV as _;
221pub(crate) const SIGUSR2: c_int = linux_raw_sys::general::SIGUSR2 as _;
222pub(crate) const SIGPIPE: c_int = linux_raw_sys::general::SIGPIPE as _;
223pub(crate) const SIGALRM: c_int = linux_raw_sys::general::SIGALRM as _;
224pub(crate) const SIGTERM: c_int = linux_raw_sys::general::SIGTERM as _;
225#[cfg(not(any(
226    target_arch = "mips",
227    target_arch = "mips32r6",
228    target_arch = "mips64",
229    target_arch = "mips64r6",
230    target_arch = "sparc",
231    target_arch = "sparc64"
232)))]
233pub(crate) const SIGSTKFLT: c_int = linux_raw_sys::general::SIGSTKFLT as _;
234pub(crate) const SIGCHLD: c_int = linux_raw_sys::general::SIGCHLD as _;
235pub(crate) const SIGCONT: c_int = linux_raw_sys::general::SIGCONT as _;
236pub(crate) const SIGSTOP: c_int = linux_raw_sys::general::SIGSTOP as _;
237pub(crate) const SIGTSTP: c_int = linux_raw_sys::general::SIGTSTP as _;
238pub(crate) const SIGTTIN: c_int = linux_raw_sys::general::SIGTTIN as _;
239pub(crate) const SIGTTOU: c_int = linux_raw_sys::general::SIGTTOU as _;
240pub(crate) const SIGURG: c_int = linux_raw_sys::general::SIGURG as _;
241pub(crate) const SIGXCPU: c_int = linux_raw_sys::general::SIGXCPU as _;
242pub(crate) const SIGXFSZ: c_int = linux_raw_sys::general::SIGXFSZ as _;
243pub(crate) const SIGVTALRM: c_int = linux_raw_sys::general::SIGVTALRM as _;
244pub(crate) const SIGPROF: c_int = linux_raw_sys::general::SIGPROF as _;
245pub(crate) const SIGWINCH: c_int = linux_raw_sys::general::SIGWINCH as _;
246pub(crate) const SIGIO: c_int = linux_raw_sys::general::SIGIO as _;
247pub(crate) const SIGPWR: c_int = linux_raw_sys::general::SIGPWR as _;
248pub(crate) const SIGSYS: c_int = linux_raw_sys::general::SIGSYS as _;
249#[cfg(any(
250    target_arch = "mips",
251    target_arch = "mips32r6",
252    target_arch = "mips64",
253    target_arch = "mips64r6",
254    target_arch = "sparc",
255    target_arch = "sparc64"
256))]
257pub(crate) const SIGEMT: c_int = linux_raw_sys::general::SIGEMT as _;
258
259#[cfg(feature = "stdio")]
260pub(crate) const STDIN_FILENO: c_int = linux_raw_sys::general::STDIN_FILENO as _;
261#[cfg(feature = "stdio")]
262pub(crate) const STDOUT_FILENO: c_int = linux_raw_sys::general::STDOUT_FILENO as _;
263#[cfg(feature = "stdio")]
264pub(crate) const STDERR_FILENO: c_int = linux_raw_sys::general::STDERR_FILENO as _;
265
266pub(crate) const PIPE_BUF: usize = linux_raw_sys::general::PIPE_BUF as _;
267
268pub(crate) const CLOCK_MONOTONIC: c_int = linux_raw_sys::general::CLOCK_MONOTONIC as _;
269pub(crate) const CLOCK_REALTIME: c_int = linux_raw_sys::general::CLOCK_REALTIME as _;
270pub(crate) const CLOCK_MONOTONIC_RAW: c_int = linux_raw_sys::general::CLOCK_MONOTONIC_RAW as _;
271pub(crate) const CLOCK_MONOTONIC_COARSE: c_int =
272    linux_raw_sys::general::CLOCK_MONOTONIC_COARSE as _;
273pub(crate) const CLOCK_REALTIME_COARSE: c_int = linux_raw_sys::general::CLOCK_REALTIME_COARSE as _;
274pub(crate) const CLOCK_THREAD_CPUTIME_ID: c_int =
275    linux_raw_sys::general::CLOCK_THREAD_CPUTIME_ID as _;
276pub(crate) const CLOCK_PROCESS_CPUTIME_ID: c_int =
277    linux_raw_sys::general::CLOCK_PROCESS_CPUTIME_ID as _;
278#[cfg(any(feature = "thread", feature = "time", target_arch = "x86"))]
279pub(crate) const CLOCK_BOOTTIME: c_int = linux_raw_sys::general::CLOCK_BOOTTIME as _;
280#[cfg(any(feature = "thread", feature = "time", target_arch = "x86"))]
281pub(crate) const CLOCK_BOOTTIME_ALARM: c_int = linux_raw_sys::general::CLOCK_BOOTTIME_ALARM as _;
282#[cfg(any(feature = "thread", feature = "time", target_arch = "x86"))]
283pub(crate) const CLOCK_TAI: c_int = linux_raw_sys::general::CLOCK_TAI as _;
284#[cfg(any(feature = "thread", feature = "time", target_arch = "x86"))]
285pub(crate) const CLOCK_REALTIME_ALARM: c_int = linux_raw_sys::general::CLOCK_REALTIME_ALARM as _;
286
287#[cfg(feature = "system")]
288mod reboot_symbols {
289    use super::c_int;
290
291    pub(crate) const LINUX_REBOOT_MAGIC1: c_int = linux_raw_sys::general::LINUX_REBOOT_MAGIC1 as _;
292    pub(crate) const LINUX_REBOOT_MAGIC2: c_int = linux_raw_sys::general::LINUX_REBOOT_MAGIC2 as _;
293
294    pub(crate) const LINUX_REBOOT_CMD_RESTART: c_int =
295        linux_raw_sys::general::LINUX_REBOOT_CMD_RESTART as _;
296    pub(crate) const LINUX_REBOOT_CMD_HALT: c_int =
297        linux_raw_sys::general::LINUX_REBOOT_CMD_HALT as _;
298    pub(crate) const LINUX_REBOOT_CMD_CAD_ON: c_int =
299        linux_raw_sys::general::LINUX_REBOOT_CMD_CAD_ON as _;
300    pub(crate) const LINUX_REBOOT_CMD_CAD_OFF: c_int =
301        linux_raw_sys::general::LINUX_REBOOT_CMD_CAD_OFF as _;
302    pub(crate) const LINUX_REBOOT_CMD_POWER_OFF: c_int =
303        linux_raw_sys::general::LINUX_REBOOT_CMD_POWER_OFF as _;
304    pub(crate) const LINUX_REBOOT_CMD_SW_SUSPEND: c_int =
305        linux_raw_sys::general::LINUX_REBOOT_CMD_SW_SUSPEND as _;
306    pub(crate) const LINUX_REBOOT_CMD_KEXEC: c_int =
307        linux_raw_sys::general::LINUX_REBOOT_CMD_KEXEC as _;
308}
309#[cfg(feature = "system")]
310pub(crate) use reboot_symbols::*;
311
312// TODO: This is new in Linux 6.11; remove when linux-raw-sys is updated.
313pub(crate) const MAP_DROPPABLE: u32 = 0x8;
314
315// TODO: This is new in Linux 6.5; remove when linux-raw-sys is updated.
316pub(crate) const MOVE_MOUNT_BENEATH: u32 = 0x200;
rustix/backend/linux_raw/c.rs

rustix/backend/linux_raw/
c.rs
