1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
|
//! Network interface name resolution.
//!
//! Uses Linux and/or POSIX functions to resolve interface names like "eth0"
//! or "socan1" into device numbers.
use crate::{Error, NixPath, Result};
use libc::c_uint;
/// Resolve an interface into a interface number.
pub fn if_nametoindex<P: ?Sized + NixPath>(name: &P) -> Result<c_uint> {
let if_index = name.with_nix_path(|name| unsafe { libc::if_nametoindex(name.as_ptr()) })?;
if if_index == 0 {
Err(Error::last())
} else {
Ok(if_index)
}
}
libc_bitflags!(
/// Standard interface flags, used by `getifaddrs`
pub struct InterfaceFlags: libc::c_int {
/// Interface is running. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_UP;
/// Valid broadcast address set. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_BROADCAST;
/// Internal debugging flag. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_DEBUG;
/// Interface is a loopback interface. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_LOOPBACK;
/// Interface is a point-to-point link. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_POINTOPOINT;
/// Avoid use of trailers. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
#[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "ios",
target_os = "linux",
target_os = "macos",
target_os = "netbsd",
target_os = "illumos",
target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NOTRAILERS;
/// Interface manages own routes.
#[cfg(any(target_os = "dragonfly"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_SMART;
/// Resources allocated. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
#[cfg(any(target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "illumos",
target_os = "ios",
target_os = "linux",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_RUNNING;
/// No arp protocol, L2 destination address not set. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_NOARP;
/// Interface is in promiscuous mode. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_PROMISC;
/// Receive all multicast packets. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_ALLMULTI;
/// Master of a load balancing bundle. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_MASTER;
/// transmission in progress, tx hardware queue is full
#[cfg(any(target_os = "freebsd",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "ios"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_OACTIVE;
/// Protocol code on board.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_INTELLIGENT;
/// Slave of a load balancing bundle. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_SLAVE;
/// Can't hear own transmissions.
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "osx"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_SIMPLEX;
/// Supports multicast. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
IFF_MULTICAST;
/// Per link layer defined bit.
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "ios"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_LINK0;
/// Multicast using broadcast.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_MULTI_BCAST;
/// Is able to select media type via ifmap. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_PORTSEL;
/// Per link layer defined bit.
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "ios"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_LINK1;
/// Non-unique address.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_UNNUMBERED;
/// Auto media selection active. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_AUTOMEDIA;
/// Per link layer defined bit.
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "ios"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_LINK2;
/// Use alternate physical connection.
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "macos",
target_os = "ios"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_ALTPHYS;
/// DHCP controls interface.
#[cfg(any(target_os = "solaris", target_os = "illumos"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_DHCPRUNNING;
/// The addresses are lost when the interface goes down. (see
/// [`netdevice(7)`](https://man7.org/linux/man-pages/man7/netdevice.7.html))
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_DYNAMIC;
/// Do not advertise.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_PRIVATE;
/// Driver signals L1 up. Volatile.
#[cfg(any(target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_LOWER_UP;
/// Interface is in polling mode.
#[cfg(any(target_os = "dragonfly"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_POLLING_COMPAT;
/// Unconfigurable using ioctl(2).
#[cfg(any(target_os = "freebsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_CANTCONFIG;
/// Do not transmit packets.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NOXMIT;
/// Driver signals dormant. Volatile.
#[cfg(any(target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_DORMANT;
/// User-requested promisc mode.
#[cfg(any(target_os = "dragonfly", target_os = "freebsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_PPROMISC;
/// Just on-link subnet.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NOLOCAL;
/// Echo sent packets. Volatile.
#[cfg(any(target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_ECHO;
/// User-requested monitor mode.
#[cfg(any(target_os = "dragonfly", target_os = "freebsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_MONITOR;
/// Address is deprecated.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_DEPRECATED;
/// Static ARP.
#[cfg(any(target_os = "dragonfly", target_os = "freebsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_STATICARP;
/// Address from stateless addrconf.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_ADDRCONF;
/// Interface is in polling mode.
#[cfg(any(target_os = "dragonfly"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NPOLLING;
/// Router on interface.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_ROUTER;
/// Interface is in polling mode.
#[cfg(any(target_os = "dragonfly"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_IDIRECT;
/// Interface is winding down
#[cfg(any(target_os = "freebsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_DYING;
/// No NUD on interface.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NONUD;
/// Interface is being renamed
#[cfg(any(target_os = "freebsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_RENAMING;
/// Anycast address.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_ANYCAST;
/// Don't exchange routing info.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NORTEXCH;
/// Do not provide packet information
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NO_PI as libc::c_int;
/// TUN device (no Ethernet headers)
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_TUN as libc::c_int;
/// TAP device
#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_TAP as libc::c_int;
/// IPv4 interface.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_IPV4;
/// IPv6 interface.
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_IPV6;
/// in.mpathd test address
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_NOFAILOVER;
/// Interface has failed
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_FAILED;
/// Interface is a hot-spare
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_STANDBY;
/// Functioning but not used
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_INACTIVE;
/// Interface is offline
#[cfg(any(target_os = "illumos", target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_OFFLINE;
#[cfg(target_os = "solaris")]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_COS_ENABLED;
/// Prefer as source addr.
#[cfg(target_os = "solaris")]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_PREFERRED;
/// RFC3041
#[cfg(target_os = "solaris")]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_TEMPORARY;
/// MTU set with SIOCSLIFMTU
#[cfg(target_os = "solaris")]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_FIXEDMTU;
/// Cannot send / receive packets
#[cfg(target_os = "solaris")]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_VIRTUAL;
/// Local address in use
#[cfg(target_os = "solaris")]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_DUPLICATE;
/// IPMP IP interface
#[cfg(target_os = "solaris")]
#[cfg_attr(docsrs, doc(cfg(all())))]
IFF_IPMP;
}
);
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "ios",
target_os = "linux",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
mod if_nameindex {
use super::*;
use std::ffi::CStr;
use std::fmt;
use std::marker::PhantomData;
use std::ptr::NonNull;
/// A network interface. Has a name like "eth0" or "wlp4s0" or "wlan0", as well as an index
/// (1, 2, 3, etc) that identifies it in the OS's networking stack.
#[allow(missing_copy_implementations)]
#[repr(transparent)]
pub struct Interface(libc::if_nameindex);
impl Interface {
/// Obtain the index of this interface.
pub fn index(&self) -> c_uint {
self.0.if_index
}
/// Obtain the name of this interface.
pub fn name(&self) -> &CStr {
unsafe { CStr::from_ptr(self.0.if_name) }
}
}
impl fmt::Debug for Interface {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("Interface")
.field("index", &self.index())
.field("name", &self.name())
.finish()
}
}
/// A list of the network interfaces available on this system. Obtained from [`if_nameindex()`].
pub struct Interfaces {
ptr: NonNull<libc::if_nameindex>,
}
impl Interfaces {
/// Iterate over the interfaces in this list.
#[inline]
pub fn iter(&self) -> InterfacesIter<'_> {
self.into_iter()
}
/// Convert this to a slice of interfaces. Note that the underlying interfaces list is
/// null-terminated, so calling this calculates the length. If random access isn't needed,
/// [`Interfaces::iter()`] should be used instead.
pub fn to_slice(&self) -> &[Interface] {
let ifs = self.ptr.as_ptr() as *const Interface;
let len = self.iter().count();
unsafe { std::slice::from_raw_parts(ifs, len) }
}
}
impl Drop for Interfaces {
fn drop(&mut self) {
unsafe { libc::if_freenameindex(self.ptr.as_ptr()) };
}
}
impl fmt::Debug for Interfaces {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.to_slice().fmt(f)
}
}
impl<'a> IntoIterator for &'a Interfaces {
type IntoIter = InterfacesIter<'a>;
type Item = &'a Interface;
#[inline]
fn into_iter(self) -> Self::IntoIter {
InterfacesIter {
ptr: self.ptr.as_ptr(),
_marker: PhantomData,
}
}
}
/// An iterator over the interfaces in an [`Interfaces`].
#[derive(Debug)]
pub struct InterfacesIter<'a> {
ptr: *const libc::if_nameindex,
_marker: PhantomData<&'a Interfaces>,
}
impl<'a> Iterator for InterfacesIter<'a> {
type Item = &'a Interface;
#[inline]
fn next(&mut self) -> Option<Self::Item> {
unsafe {
if (*self.ptr).if_index == 0 {
None
} else {
let ret = &*(self.ptr as *const Interface);
self.ptr = self.ptr.add(1);
Some(ret)
}
}
}
}
/// Retrieve a list of the network interfaces available on the local system.
///
/// ```
/// let interfaces = nix::net::if_::if_nameindex().unwrap();
/// for iface in &interfaces {
/// println!("Interface #{} is called {}", iface.index(), iface.name().to_string_lossy());
/// }
/// ```
pub fn if_nameindex() -> Result<Interfaces> {
unsafe {
let ifs = libc::if_nameindex();
let ptr = NonNull::new(ifs).ok_or_else(Error::last)?;
Ok(Interfaces { ptr })
}
}
}
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "fuchsia",
target_os = "ios",
target_os = "linux",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
))]
pub use if_nameindex::*;
|
