Attachment #188232 for bug #223722

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Lines 1-5 Link Here

(-)linsysfs.c (-1 / +213 lines)
1	/*-	1	/*-
2	* Copyright (c) 2006 IronPort Systems	2	* Copyright (c) 2006 IronPort Systems
		3	* Copyright (c) 2017 Carlos Neira cneirabustos@gmail.com
3	* All rights reserved.	4	* All rights reserved.
4	*	5	*
5	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
Lines 25-31 Link Here
25	*/	26	*/
26		27
27	#include <sys/cdefs.h>	28	#include <sys/cdefs.h>
28	__FBSDID("$FreeBSD: releng/11.1/sys/compat/linsysfs/linsysfs.c 317318 2017-04-23 06:45:21Z dchagin $");	29	__FBSDID("$FreeBSD$");
29		30
30	#include <sys/param.h>	31	#include <sys/param.h>
31	#include <sys/systm.h>	32	#include <sys/systm.h>
Lines 51-57 Link Here
51	#include <dev/pci/pcivar.h>	52	#include <dev/pci/pcivar.h>
52	#include <dev/pci/pcireg.h>	53	#include <dev/pci/pcireg.h>
53		54
		55	#include <sys/ctype.h>
54	#include <net/if.h>	56	#include <net/if.h>
		57	#include <net/if_types.h>
		58	#include <net/if_var.h>
		59	#include <net/if_dl.h>
		60	#include <net/vnet.h>
55		61
56	#include <vm/vm.h>	62	#include <vm/vm.h>
57	#include <vm/pmap.h>	63	#include <vm/pmap.h>
Lines 66-71 Link Here
66	#include <compat/linux/linux_mib.h>	72	#include <compat/linux/linux_mib.h>
67	#include <compat/linux/linux_util.h>	73	#include <compat/linux/linux_util.h>
68	#include <fs/pseudofs/pseudofs.h>	74	#include <fs/pseudofs/pseudofs.h>
		75	#include <sys/jail.h>
		76
		77	#define LINUX_IFNAMSIZ 16
		78
69		79
70	struct scsi_host_queue {	80	struct scsi_host_queue {
71	TAILQ_ENTRY(scsi_host_queue) scsi_host_next;	81	TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
Lines 77-82 Link Here
77		87
78	static int host_number = 0;	88	static int host_number = 0;
79		89
		90
80	static int	91	static int
81	atoi(const char *str)	92	atoi(const char *str)
82	{	93	{
Lines 270-275 Link Here
270	}	281	}
271		282
272	/*	283	/*
		284	* Filler function for sys/class/net/<iface>
		285	* Used as reference
		286	* https://grok.elemental.org/source/xref/illumos-joyent/usr/src/uts/common/brand/lx/sysfs/lx_sysvnops.c
		287	* and Linux kernel documentation for /sys/class/net
		288	* Only 2 interfaces are created eth0 and lo and they expose the following files
		289	* to make applications work:
		290	* address, addr_len, flags, ifindex, mty, tx_queue_len and type
		291	*/
		292	#define ETHERADDRL 6
		293	#define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
		294	static struct ifnet *
		295	ifname_linux_to_bsd(struct thread td, const char lxname, char *bsdname)
		296	{
		297	struct ifnet *ifp;
		298	int len, unit;
		299	char *ep;
		300	int is_eth, index;
		301
		302	for (len = 0; len < LINUX_IFNAMSIZ; ++len)
		303	if (!isalpha(lxname[len]))
		304	break;
		305	if (len == 0 \|\| len == LINUX_IFNAMSIZ)
		306	return (NULL);
		307	unit = (int)strtoul(lxname + len, &ep, 10);
		308	if (ep == NULL \|\| ep == lxname + len \|\| ep >= lxname + LINUX_IFNAMSIZ)
		309	return (NULL);
		310	index = 0;
		311	is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
		312	CURVNET_SET(TD_TO_VNET(td));
		313	IFNET_RLOCK();
		314	TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
		315	/*
		316	* Allow Linux programs to use FreeBSD names. Don't presume
		317	* we never have an interface named "eth", so don't make
		318	* the test optional based on is_eth.
		319	*/
		320	if (strncmp(ifp->if_xname, lxname, LINUX_IFNAMSIZ) == 0)
		321	break;
		322	if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
		323	break;
		324	}
		325	IFNET_RUNLOCK();
		326	CURVNET_RESTORE();
		327	if (ifp != NULL)
		328	strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
		329	return (ifp);
		330	}
		331
		332	static int
		333	linsysfs_ifnet_addr (PFS_FILL_ARGS) {
		334	struct ifnet* ifp;
		335	char bsdname[IFNAMSIZ+1];
		336	uint8_t* address;
		337	if (!memcmp((const char*)pn->pn_parent->pn_name,"lo",2)) {
		338	sbuf_printf (sb, "00:00:00:00:00:00\n");
		339	return (0);
		340	} else {
		341	ifp = ifname_linux_to_bsd(curthread,(const char*)pn->pn_parent->pn_name,bsdname);
		342	if (!ifp) {
		343	sbuf_printf (sb, "00:00:00:00:00:00\n");
		344	return (0);
		345	}
		346	address = IF_LLADDR(ifp);
		347	sbuf_printf (sb,"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n",
348	address[0], address[1], address[2],
349	address[3], address[4], address[5]);
350	return (0);
351	}
352	}
353	//https://grok.elemental.org/source/xref/illumos-joyent/usr/src/uts/common/brand/lx/sysfs/lx_sysvnops.c#LXSYS_ENDP_NET_ADDRLEN
354	static int
355	linsysfs_ifnet_addrlen (PFS_FILL_ARGS) {
356	sbuf_printf(sb,"6\n");
357	return (0);
358	}
359	//;https://grok.elemental.org/source/xref/illumos-joyent/usr/src/uts/common/brand/lx/os/lx_misc.c#859
360	static int
361	linsysfs_ifnet_flags (PFS_FILL_ARGS) {
362	int buf;
363	struct ifnet* ifp;
364	char bsdname[IFNAMSIZ+1];
365	if (!memcmp((const char*)pn->pn_parent->pn_name,"eth",3)) {
366
367	ifp = ifname_linux_to_bsd(curthread,(const char*)pn->pn_parent->pn_name,bsdname);
368	buf = ifp->if_flags & (IFF_UP \| IFF_BROADCAST \| IFF_DEBUG \|
369	IFF_LOOPBACK \| IFF_POINTOPOINT \|
370	IFF_DRV_RUNNING \| IFF_NOARP \| IFF_PROMISC \| IFF_ALLMULTI);
371	buf \|= 0x1000;
372	sbuf_printf(sb,"0x%x\n",buf);
373	} else {
374	sbuf_printf(sb,"0x9\n");
375	}
376	return (0);
377	}
378	static int
379	linsysfs_ifnet_ifindex (PFS_FILL_ARGS) {
380	struct ifnet* ifp;
381	char bsdname[IFNAMSIZ+1];
382	if (!memcmp((const char*)pn->pn_parent->pn_name,"eth",3)) {
383	ifp = ifname_linux_to_bsd(curthread,(const char*)pn->pn_parent->pn_name,bsdname);
384	sbuf_printf(sb,"%u\n",ifp->if_index);
385	} else {
386	sbuf_printf(sb,"1\n");
387	}
388	return (0);
389	}
390	static int
391	linsysfs_ifnet_mtu (PFS_FILL_ARGS) {
392	struct ifnet* ifp;
393	char bsdname[IFNAMSIZ+1];
394	if (!memcmp((const char*)pn->pn_parent->pn_name,"lo",2)) {
395	sbuf_printf(sb,"65536\n");
396	} else {
397	ifp = ifname_linux_to_bsd(curthread,(const char*)pn->pn_parent->pn_name,bsdname);
398	sbuf_printf(sb,"%u\n",ifp->if_mtu);
399	}
400	return (0);
401	}
402
403	static int
404	linsysfs_ifnet_tx_queue_len (PFS_FILL_ARGS) {
405	sbuf_printf(sb,"1000\n");
406	return (0);
407	}
408	static int
409	linsysfs_ifnet_type (PFS_FILL_ARGS) {
410	if (!memcmp((const char*)pn->pn_parent->pn_name,"lo",2))
411	sbuf_printf(sb,"772\n");
412	else
413	sbuf_printf(sb,"2\n");
414	return (0);
415	}
416
417
418
419	static void
420	linsysfs_listnics (struct pfs_node *dir)
421	{
422
423	struct pfs_node *nic;
424	struct pfs_node *lo;
425
426	nic = pfs_create_dir (dir, "eth0", NULL, NULL, NULL, 0);
427
428	pfs_create_file (nic, "address", &linsysfs_ifnet_addr,
429	NULL, NULL, NULL, PFS_RD);
430
431	pfs_create_file (nic, "addr_len", &linsysfs_ifnet_addrlen,
432	NULL, NULL, NULL, PFS_RD);
433
434	pfs_create_file (nic, "flags", &linsysfs_ifnet_flags,
435	NULL, NULL, NULL, PFS_RD);
436
437	pfs_create_file (nic, "ifindex", &linsysfs_ifnet_ifindex,
438	NULL, NULL, NULL, PFS_RD);
439
440	pfs_create_file (nic, "mtu", &linsysfs_ifnet_mtu,
441	NULL, NULL, NULL, PFS_RD);
442
443	pfs_create_file (nic, "tx_queue_len", &linsysfs_ifnet_tx_queue_len,
444	NULL, NULL, NULL, PFS_RD);
445
446	pfs_create_file (nic, "type", &linsysfs_ifnet_type,
447	NULL, NULL, NULL, PFS_RD);
448
449	lo = pfs_create_dir (dir, "lo", NULL, NULL, NULL, 0);
450
451	pfs_create_file (lo, "address", &linsysfs_ifnet_addr,
452	NULL, NULL, NULL, PFS_RD);
453
454	pfs_create_file (lo, "addr_len", &linsysfs_ifnet_addrlen,
455	NULL, NULL, NULL, PFS_RD);
456
457	pfs_create_file (lo, "flags", &linsysfs_ifnet_flags,
458	NULL, NULL, NULL, PFS_RD);
459
460	pfs_create_file (lo, "ifindex", &linsysfs_ifnet_ifindex,
461	NULL, NULL, NULL, PFS_RD);
462
463	pfs_create_file (lo, "mtu", &linsysfs_ifnet_mtu,
464	NULL, NULL, NULL, PFS_RD);
465
466	pfs_create_file (lo, "tx_queue_len", &linsysfs_ifnet_tx_queue_len,
467	NULL, NULL, NULL, PFS_RD);
468
469	pfs_create_file (lo, "type", &linsysfs_ifnet_type,
470	NULL, NULL, NULL, PFS_RD);
471
472	}
473
474	/*
273	* Constructor	475	* Constructor
274	*/	476	*/
275	static int	477	static int
Lines 279-284 Link Here
279	struct pfs_node dir, sys, *cpu;	481	struct pfs_node dir, sys, *cpu;
280	struct pfs_node *pci;	482	struct pfs_node *pci;
281	struct pfs_node *scsi;	483	struct pfs_node *scsi;
		484	struct pfs_node *net;
282	devclass_t devclass;	485	devclass_t devclass;
283	device_t dev;	486	device_t dev;
284		487
Lines 288-293 Link Here
288		491
289	/* /sys/class/... */	492	/* /sys/class/... */
290	scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0);	493	scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0);
		494
		495	/* /sys/class/net/.. */
		496	net = pfs_create_dir(scsi, "net", NULL, NULL, NULL, 0);
		497
291	scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0);	498	scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0);
292		499
293	/* /sys/devices */	500	/* /sys/devices */
Lines 314-319 Link Here
314	NULL, NULL, NULL, PFS_RD);	521	NULL, NULL, NULL, PFS_RD);
315		522
316	linsysfs_listcpus(cpu);	523	linsysfs_listcpus(cpu);
		524	linsysfs_listnics(net);
317		525
318	return (0);	526	return (0);
319	}	527	}
Lines 336-341 Link Here
336	return (0);	544	return (0);
337	}	545	}
338		546
		547
		548
		549
		550
339	PSEUDOFS(linsysfs, 1, PR_ALLOW_MOUNT_LINSYSFS);	551	PSEUDOFS(linsysfs, 1, PR_ALLOW_MOUNT_LINSYSFS);
340	#if defined(__amd64__)	552	#if defined(__amd64__)
341	MODULE_DEPEND(linsysfs, linux_common, 1, 1, 1);	553	MODULE_DEPEND(linsysfs, linux_common, 1, 1, 1);

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