Differential D13656 Diff 55321 sys/compat/linsysfs/linsysfs.c

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sys/compat/linsysfs/linsysfs.c

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	* SPDX-License-Identifier: BSD-2-Clause-FreeBSD	* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
	*	*
	* Copyright (c) 2006 IronPort Systems	* Copyright (c) 2006 IronPort Systems
		* Copyright (c) 2017 Carlos Neira cneirabustos@gmail.com
	* All rights reserved.	* All rights reserved.
	*	*
	* Redistribution and use in source and binary forms, with or without	* Redistribution and use in source and binary forms, with or without
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	#include <dev/pci/pcivar.h>	#include <dev/pci/pcivar.h>
	#include <dev/pci/pcireg.h>	#include <dev/pci/pcireg.h>

		#include <sys/ctype.h>
	#include <net/if.h>	#include <net/if.h>
		#include <net/if_types.h>
		#include <net/if_var.h>
		#include <net/if_dl.h>
		#include <net/vnet.h>

	#include <vm/vm.h>	#include <vm/vm.h>
	#include <vm/pmap.h>	#include <vm/pmap.h>
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	#include <compat/linux/linux_mib.h>	#include <compat/linux/linux_mib.h>
	#include <compat/linux/linux_util.h>	#include <compat/linux/linux_util.h>
	#include <fs/pseudofs/pseudofs.h>	#include <fs/pseudofs/pseudofs.h>
		#include <sys/jail.h>

		#define LINUX_IFNAMSIZ 16

	struct scsi_host_queue {	struct scsi_host_queue {
	TAILQ_ENTRY(scsi_host_queue) scsi_host_next;	TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
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	return (int)strtol(str, (char **)NULL, 10);	return (int)strtol(str, (char **)NULL, 10);
	}	}

		/*
		* Filler function for sys/class/net/<iface>
		* Only 2 interfaces are created eth0 and lo and they expose the following files
		* address, addr_len, flags, ifindex, mty, tx_queue_len and type.
		*/
		#define ETHERADDRL 6
		#define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
		static struct ifnet *
		ifname_linux_to_bsd(struct thread td, const char lxname, char *bsdname)
		{
		struct ifnet *ifp;
		int len, unit;
		char *ep;
		int is_eth, index;

		for (len = 0; len < LINUX_IFNAMSIZ; ++len)
		if (!isalpha(lxname[len]))
		break;
		if (len == 0 \|\| len == LINUX_IFNAMSIZ)
		return (NULL);
		unit = (int)strtoul(lxname + len, &ep, 10);
		if (ep == NULL \|\| ep == lxname + len \|\| ep >= lxname + LINUX_IFNAMSIZ)
		return (NULL);
		index = 0;
		is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
		CURVNET_SET(TD_TO_VNET(td));
		IFNET_RLOCK();
		CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
		/*
		dchaginUnsubmitted Done Inline Actions tab until }? dchagin: tab until }?
		* Allow Linux programs to use FreeBSD names. Don't presume
		* we never have an interface named "eth", so don't make
		* the test optional based on is_eth.
		*/
		if (strncmp(ifp->if_xname, lxname, LINUX_IFNAMSIZ) == 0)
		break;
		if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
		break;
		}
		IFNET_RUNLOCK();
		CURVNET_RESTORE();
		if (ifp != NULL)
		strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
		return (ifp);
		}
		static int
		dchaginUnsubmitted Done Inline Actions extra line dchagin: extra line
		linsysfs_ifnet_addr (PFS_FILL_ARGS) {
		struct ifnet* ifp;
		char bsdname[IFNAMSIZ+1];
		uint8_t* address;
		if (!memcmp((const char*)pn->pn_parent->pn_name,"lo",2)) {
		sbuf_printf (sb, "00:00:00:00:00:00\n");
		return (0);
		} else {
		ifp = ifname_linux_to_bsd(curthread,(const char*)pn->pn_parent->pn_name,bsdname);
		if (!ifp) {
		sbuf_printf (sb, "00:00:00:00:00:00\n");
		return (0);
		}
		address = IF_LLADDR(ifp);
		sbuf_printf (sb,"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n",
		address[0], address[1], address[2],
		address[3], address[4], address[5]);
		return (0);
		}
		}


		dchaginUnsubmitted Done Inline Actions remove '\n' dchagin: remove '\n'
		static int
		linsysfs_ifnet_addrlen (PFS_FILL_ARGS) {
		dchaginUnsubmitted Done Inline Actions whitespace dchagin: whitespace
		sbuf_printf(sb,"6\n");
		return (0);
		}
		static int
		dchaginUnsubmitted Done Inline Actions add '\n' dchagin: add '\n'
		linsysfs_ifnet_flags (PFS_FILL_ARGS) {
		int buf;
		struct ifnet* ifp;
		char bsdname[IFNAMSIZ+1];
		if (!memcmp((const char*)pn->pn_parent->pn_name,"eth",3)) {
		ifp = ifname_linux_to_bsd(curthread,
		(const char*)pn->pn_parent->pn_name,bsdname);
		buf = ifp->if_flags & (IFF_UP \| IFF_BROADCAST \| IFF_DEBUG \|
		IFF_LOOPBACK \| IFF_POINTOPOINT \|
		IFF_DRV_RUNNING \| IFF_NOARP \| IFF_PROMISC \| IFF_ALLMULTI);
		buf \|= 0x1000;
		sbuf_printf(sb,"0x%x\n",buf);
		} else {
		sbuf_printf(sb,"0x9\n");
		}
		return (0);
		}
		static int
		dchaginUnsubmitted Done Inline Actions same dchagin: same
		linsysfs_ifnet_ifindex (PFS_FILL_ARGS) {
		struct ifnet* ifp;
		char bsdname[IFNAMSIZ+1];
		if (!memcmp((const char*)pn->pn_parent->pn_name,"eth",3)) {
		ifp = ifname_linux_to_bsd(curthread,
		(const char*)pn->pn_parent->pn_name,bsdname);
		sbuf_printf(sb,"%u\n",ifp->if_index);
		} else {
		sbuf_printf(sb,"1\n");
		}
		return (0);
		}
		static int
		dchaginUnsubmitted Done Inline Actions same dchagin: same
		linsysfs_ifnet_mtu (PFS_FILL_ARGS) {
		struct ifnet* ifp;
		char bsdname[IFNAMSIZ+1];
		if (!memcmp((const char*)pn->pn_parent->pn_name,"lo",2)) {
		sbuf_printf(sb,"65536\n");
		} else {
		ifp = ifname_linux_to_bsd(curthread,
		(const char*)pn->pn_parent->pn_name,bsdname);
		sbuf_printf(sb,"%u\n",ifp->if_mtu);
		}
		return (0);
		}

		static int
		linsysfs_ifnet_tx_queue_len (PFS_FILL_ARGS) {
		sbuf_printf(sb,"1000\n");
		return (0);
		}

		static int
		linsysfs_ifnet_type (PFS_FILL_ARGS) {
		if (!memcmp((const char*)pn->pn_parent->pn_name,"lo",2))
		sbuf_printf(sb,"772\n");
		else
		sbuf_printf(sb,"2\n");
		return (0);
		}

		static void
		linsysfs_listnics (struct pfs_node *dir)
		{
		struct pfs_node *nic;
		struct pfs_node *lo;

		nic = pfs_create_dir (dir, "eth0", NULL, NULL, NULL, 0);
		dchaginUnsubmitted Done Inline Actions whitespace in function, below too dchagin: whitespace in function, below too

		pfs_create_file (nic, "address", &linsysfs_ifnet_addr,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (nic, "addr_len", &linsysfs_ifnet_addrlen,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (nic, "flags", &linsysfs_ifnet_flags,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (nic, "ifindex", &linsysfs_ifnet_ifindex,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (nic, "mtu", &linsysfs_ifnet_mtu,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (nic, "tx_queue_len", &linsysfs_ifnet_tx_queue_len,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (nic, "type", &linsysfs_ifnet_type,
		NULL, NULL, NULL, PFS_RD);

		lo = pfs_create_dir (dir, "lo", NULL, NULL, NULL, 0);

		pfs_create_file (lo, "address", &linsysfs_ifnet_addr,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (lo, "addr_len", &linsysfs_ifnet_addrlen,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (lo, "flags", &linsysfs_ifnet_flags,
		NULL, NULL, NULL, PFS_RD);

		dchaginUnsubmitted Done Inline Actions btw, why lo instead of lo0? dchagin: btw, why lo instead of lo0?
		cemUnsubmitted Done Inline Actions It's Linux's name for the loopback interface (not lo0). cem: It's Linux's name for the loopback interface (not lo0).
		cneirabustos_gmail.comAuthorUnsubmitted Done Inline Actions That's correct. cneirabustos_gmail.com: That's correct.
		cneirabustos_gmail.comAuthorUnsubmitted Done Inline Actions As @cem explained, the loopback device is named lo in Linux. cneirabustos_gmail.com: As @cem explained, the loopback device is named lo in Linux.
		pfs_create_file (lo, "ifindex", &linsysfs_ifnet_ifindex,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (lo, "mtu", &linsysfs_ifnet_mtu,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (lo, "tx_queue_len", &linsysfs_ifnet_tx_queue_len,
		NULL, NULL, NULL, PFS_RD);

		pfs_create_file (lo, "type", &linsysfs_ifnet_type,
		NULL, NULL, NULL, PFS_RD);
		}

	/*	/*
	* Filler function for proc_name	* Filler function for proc_name
	*/	*/
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	struct pfs_node *drm;	struct pfs_node *drm;
	struct pfs_node *pci;	struct pfs_node *pci;
	struct pfs_node *scsi;	struct pfs_node *scsi;
		struct pfs_node *net;
	struct pfs_node devdir, chardev;	struct pfs_node devdir, chardev;
	devclass_t devclass;	devclass_t devclass;
	device_t dev;	device_t dev;
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	scsi = pfs_create_dir(class, "scsi_host", NULL, NULL, NULL, 0);	scsi = pfs_create_dir(class, "scsi_host", NULL, NULL, NULL, 0);
	drm = pfs_create_dir(class, "drm", NULL, NULL, NULL, 0);	drm = pfs_create_dir(class, "drm", NULL, NULL, NULL, 0);

		/* /sys/class/net/.. */
		net = pfs_create_dir(class, "net", NULL, NULL, NULL, 0);

	/* /sys/dev/... */	/* /sys/dev/... */
	devdir = pfs_create_dir(root, "dev", NULL, NULL, NULL, 0);	devdir = pfs_create_dir(root, "dev", NULL, NULL, NULL, 0);
	chardev = pfs_create_dir(devdir, "char", NULL, NULL, NULL, 0);	chardev = pfs_create_dir(devdir, "char", NULL, NULL, NULL, 0);
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	NULL, NULL, NULL, PFS_RD);	NULL, NULL, NULL, PFS_RD);

	linsysfs_listcpus(cpu);	linsysfs_listcpus(cpu);
		linsysfs_listnics(net);

	return (0);	return (0);
	}	}
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