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linsysfs.c
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Editing: linsysfs.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2006 IronPort Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/systm.h> #include <sys/ctype.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/mount.h> #include <sys/sbuf.h> #include <sys/smp.h> #include <sys/socket.h> #include <sys/bus.h> #include <sys/pciio.h> #include <dev/pci/pcivar.h> #include <dev/pci/pcireg.h> #include <net/if.h> #include <net/if_var.h> #include <net/if_dl.h> #include <compat/linux/linux.h> #include <compat/linux/linux_common.h> #include <compat/linux/linux_util.h> #include <fs/pseudofs/pseudofs.h> struct scsi_host_queue { TAILQ_ENTRY(scsi_host_queue) scsi_host_next; char *path; char *name; }; TAILQ_HEAD(,scsi_host_queue) scsi_host_q; static int host_number = 0; static int atoi(const char *str) { return (int)strtol(str, (char **)NULL, 10); } static int linsysfs_ifnet_addr(PFS_FILL_ARGS) { struct l_sockaddr lsa; struct ifnet *ifp; ifp = ifname_linux_to_bsd(td, pn->pn_parent->pn_name, NULL); if (ifp == NULL) return (ENOENT); if (linux_ifhwaddr(ifp, &lsa) != 0) return (ENOENT); sbuf_printf(sb, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n", lsa.sa_data[0], lsa.sa_data[1], lsa.sa_data[2], lsa.sa_data[3], lsa.sa_data[4], lsa.sa_data[5]); return (0); } static int linsysfs_ifnet_addrlen(PFS_FILL_ARGS) { sbuf_printf(sb, "%d\n", LINUX_IFHWADDRLEN); return (0); } static int linsysfs_ifnet_flags(PFS_FILL_ARGS) { struct ifnet *ifp; unsigned short flags; ifp = ifname_linux_to_bsd(td, pn->pn_parent->pn_name, NULL); if (ifp == NULL) return (ENOENT); linux_ifflags(ifp, &flags); sbuf_printf(sb, "0x%x\n", flags); return (0); } static int linsysfs_ifnet_ifindex(PFS_FILL_ARGS) { struct ifnet *ifp; ifp = ifname_linux_to_bsd(td, pn->pn_parent->pn_name, NULL); if (ifp == NULL) return (ENOENT); sbuf_printf(sb, "%u\n", ifp->if_index); return (0); } static int linsysfs_ifnet_mtu(PFS_FILL_ARGS) { struct ifnet *ifp; ifp = ifname_linux_to_bsd(td, pn->pn_parent->pn_name, NULL); if (ifp == NULL) return (ENOENT); sbuf_printf(sb, "%u\n", ifp->if_mtu); return (0); } static int linsysfs_ifnet_tx_queue_len(PFS_FILL_ARGS) { /* XXX */ sbuf_printf(sb, "1000\n"); return (0); } static int linsysfs_ifnet_type(PFS_FILL_ARGS) { struct l_sockaddr lsa; struct ifnet *ifp; ifp = ifname_linux_to_bsd(td, pn->pn_parent->pn_name, NULL); if (ifp == NULL) return (ENOENT); if (linux_ifhwaddr(ifp, &lsa) != 0) return (ENOENT); sbuf_printf(sb, "%d\n", lsa.sa_family); 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); 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); 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 */ static int linsysfs_scsiname(PFS_FILL_ARGS) { struct scsi_host_queue *scsi_host; int index; if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { index = atoi(&pn->pn_parent->pn_name[4]); } else { sbuf_printf(sb, "unknown\n"); return (0); } TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { if (index-- == 0) { sbuf_printf(sb, "%s\n", scsi_host->name); return (0); } } sbuf_printf(sb, "unknown\n"); return (0); } /* * Filler function for device sym-link */ static int linsysfs_link_scsi_host(PFS_FILL_ARGS) { struct scsi_host_queue *scsi_host; int index; if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { index = atoi(&pn->pn_parent->pn_name[4]); } else { sbuf_printf(sb, "unknown\n"); return (0); } TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { if (index-- == 0) { sbuf_printf(sb, "../../../devices%s", scsi_host->path); return(0); } } sbuf_printf(sb, "unknown\n"); return (0); } static int linsysfs_fill_data(PFS_FILL_ARGS) { sbuf_printf(sb, "%s", (char *)pn->pn_data); return (0); } static int linsysfs_fill_vendor(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_vendor((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_device(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_device((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_subvendor(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_subvendor((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_subdevice(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_subdevice((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_revid(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%x\n", pci_get_revid((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_config(PFS_FILL_ARGS) { uint8_t config[48]; device_t dev; uint32_t reg; dev = (device_t)pn->pn_data; bzero(config, sizeof(config)); reg = pci_get_vendor(dev); config[0] = reg; config[1] = reg >> 8; reg = pci_get_device(dev); config[2] = reg; config[3] = reg >> 8; reg = pci_get_revid(dev); config[8] = reg; reg = pci_get_subvendor(dev); config[44] = reg; config[45] = reg >> 8; reg = pci_get_subdevice(dev); config[46] = reg; config[47] = reg >> 8; sbuf_bcat(sb, config, sizeof(config)); return (0); } /* * Filler function for PCI uevent file */ static int linsysfs_fill_uevent_pci(PFS_FILL_ARGS) { device_t dev; dev = (device_t)pn->pn_data; sbuf_printf(sb, "DRIVER=%s\nPCI_CLASS=%X\nPCI_ID=%04X:%04X\n" "PCI_SUBSYS_ID=%04X:%04X\nPCI_SLOT_NAME=%04d:%02x:%02x.%x\n", linux_driver_get_name_dev(dev), pci_get_class(dev), pci_get_vendor(dev), pci_get_device(dev), pci_get_subvendor(dev), pci_get_subdevice(dev), pci_get_domain(dev), pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev)); return (0); } /* * Filler function for drm uevent file */ static int linsysfs_fill_uevent_drm(PFS_FILL_ARGS) { device_t dev; int unit; dev = (device_t)pn->pn_data; unit = device_get_unit(dev); sbuf_printf(sb, "MAJOR=226\nMINOR=%d\nDEVNAME=dri/card%d\nDEVTYPE=dri_minor\n", unit, unit); return (0); } static char * get_full_pfs_path(struct pfs_node *cur) { char *temp, *path; temp = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); path = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); path[0] = '\0'; do { snprintf(temp, MAXPATHLEN, "%s/%s", cur->pn_name, path); strlcpy(path, temp, MAXPATHLEN); cur = cur->pn_parent; } while (cur->pn_parent != NULL); path[strlen(path) - 1] = '\0'; /* remove extra slash */ free(temp, M_TEMP); return (path); } /* * Filler function for symlink from drm char device to PCI device */ static int linsysfs_fill_vgapci(PFS_FILL_ARGS) { char *path; path = get_full_pfs_path((struct pfs_node*)pn->pn_data); sbuf_printf(sb, "../../../%s", path); free(path, M_TEMP); return (0); } #undef PCI_DEV #define PCI_DEV "pci" #define DRMN_DEV "drmn" static int linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, struct pfs_node *chardev, struct pfs_node *drm, char *path, char *prefix) { struct scsi_host_queue *scsi_host; struct pfs_node *sub_dir, *cur_file; int i, nchildren, error; device_t *children, parent; devclass_t devclass; const char *name = NULL; struct pci_devinfo *dinfo; char *device, *host, *new_path, *devname; new_path = path; devname = malloc(16, M_TEMP, M_WAITOK); parent = device_get_parent(dev); if (parent) { devclass = device_get_devclass(parent); if (devclass != NULL) name = devclass_get_name(devclass); if (name && strcmp(name, PCI_DEV) == 0) { dinfo = device_get_ivars(dev); if (dinfo) { device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); new_path = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); new_path[0] = '\000'; strcpy(new_path, path); host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); device[0] = '\000'; sprintf(device, "%s:%02x:%02x.%x", prefix, dinfo->cfg.bus, dinfo->cfg.slot, dinfo->cfg.func); strcat(new_path, "/"); strcat(new_path, device); dir = pfs_create_dir(dir, device, NULL, NULL, NULL, 0); cur_file = pfs_create_file(dir, "vendor", &linsysfs_fill_vendor, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "device", &linsysfs_fill_device, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "subsystem_vendor", &linsysfs_fill_subvendor, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "subsystem_device", &linsysfs_fill_subdevice, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "revision", &linsysfs_fill_revid, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "config", &linsysfs_fill_config, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "uevent", &linsysfs_fill_uevent_pci, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_link(dir, "subsystem", &linsysfs_fill_data, NULL, NULL, NULL, 0); /* libdrm just checks that the link ends in "/pci" */ cur_file->pn_data = "/sys/bus/pci"; if (dinfo->cfg.baseclass == PCIC_STORAGE) { /* DJA only make this if needed */ sprintf(host, "host%d", host_number++); strcat(new_path, "/"); strcat(new_path, host); pfs_create_dir(dir, host, NULL, NULL, NULL, 0); scsi_host = malloc(sizeof( struct scsi_host_queue), M_DEVBUF, M_NOWAIT); scsi_host->path = malloc( strlen(new_path) + 1, M_DEVBUF, M_NOWAIT); scsi_host->path[0] = '\000'; bcopy(new_path, scsi_host->path, strlen(new_path) + 1); scsi_host->name = "unknown"; sub_dir = pfs_create_dir(scsi, host, NULL, NULL, NULL, 0); pfs_create_link(sub_dir, "device", &linsysfs_link_scsi_host, NULL, NULL, NULL, 0); pfs_create_file(sub_dir, "proc_name", &linsysfs_scsiname, NULL, NULL, NULL, PFS_RD); scsi_host->name = linux_driver_get_name_dev(dev); TAILQ_INSERT_TAIL(&scsi_host_q, scsi_host, scsi_host_next); } free(device, M_TEMP); free(host, M_TEMP); } } devclass = device_get_devclass(dev); if (devclass != NULL) name = devclass_get_name(devclass); else name = NULL; if (name != NULL && strcmp(name, DRMN_DEV) == 0 && device_get_unit(dev) >= 0) { dinfo = device_get_ivars(parent); if (dinfo != NULL && dinfo->cfg.baseclass == PCIC_DISPLAY) { pfs_create_dir(dir, "drm", NULL, NULL, NULL, 0); sprintf(devname, "226:%d", device_get_unit(dev)); sub_dir = pfs_create_dir(chardev, devname, NULL, NULL, NULL, 0); cur_file = pfs_create_link(sub_dir, "device", &linsysfs_fill_vgapci, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dir; cur_file = pfs_create_file(sub_dir, "uevent", &linsysfs_fill_uevent_drm, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; sprintf(devname, "card%d", device_get_unit(dev)); sub_dir = pfs_create_dir(drm, devname, NULL, NULL, NULL, 0); cur_file = pfs_create_link(sub_dir, "device", &linsysfs_fill_vgapci, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dir; } } } error = device_get_children(dev, &children, &nchildren); if (error == 0) { for (i = 0; i < nchildren; i++) if (children[i]) linsysfs_run_bus(children[i], dir, scsi, chardev, drm, new_path, prefix); free(children, M_TEMP); } if (new_path != path) free(new_path, M_TEMP); free(devname, M_TEMP); return (1); } /* * Filler function for sys/devices/system/cpu/{online,possible,present} */ static int linsysfs_cpuonline(PFS_FILL_ARGS) { sbuf_printf(sb, "%d-%d\n", CPU_FIRST(), mp_maxid); return (0); } /* * Filler function for sys/devices/system/cpu/cpuX/online */ static int linsysfs_cpuxonline(PFS_FILL_ARGS) { sbuf_printf(sb, "1\n"); return (0); } static void linsysfs_listcpus(struct pfs_node *dir) { struct pfs_node *cpu; char *name; int i, count, len; len = 1; count = mp_maxcpus; while (count > 10) { count /= 10; len++; } len += sizeof("cpu"); name = malloc(len, M_TEMP, M_WAITOK); for (i = 0; i < mp_ncpus; ++i) { /* /sys/devices/system/cpu/cpuX */ sprintf(name, "cpu%d", i); cpu = pfs_create_dir(dir, name, NULL, NULL, NULL, 0); pfs_create_file(cpu, "online", &linsysfs_cpuxonline, NULL, NULL, NULL, PFS_RD); } free(name, M_TEMP); } /* * Constructor */ static int linsysfs_init(PFS_INIT_ARGS) { struct pfs_node *root; struct pfs_node *class; struct pfs_node *dir, *sys, *cpu; struct pfs_node *drm; struct pfs_node *pci; struct pfs_node *scsi; struct pfs_node *net; struct pfs_node *power_supply; struct pfs_node *devdir, *chardev; struct pfs_node *kernel; struct pfs_node *debug; devclass_t devclass; device_t dev; TAILQ_INIT(&scsi_host_q); root = pi->pi_root; /* /sys/class/... */ class = pfs_create_dir(root, "class", 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); power_supply = pfs_create_dir(class, "power_supply", NULL, NULL, NULL, 0); /* /sys/class/net/.. */ net = pfs_create_dir(class, "net", NULL, NULL, NULL, 0); /* /sys/dev/... */ devdir = pfs_create_dir(root, "dev", NULL, NULL, NULL, 0); chardev = pfs_create_dir(devdir, "char", NULL, NULL, NULL, 0); /* /sys/devices/... */ dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0); pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0); devclass = devclass_find("root"); if (devclass == NULL) { return (0); } dev = devclass_get_device(devclass, 0); linsysfs_run_bus(dev, pci, scsi, chardev, drm, "/pci0000:00", "0000"); /* /sys/devices/system */ sys = pfs_create_dir(dir, "system", NULL, NULL, NULL, 0); /* /sys/devices/system/cpu */ cpu = pfs_create_dir(sys, "cpu", NULL, NULL, NULL, 0); pfs_create_file(cpu, "online", &linsysfs_cpuonline, NULL, NULL, NULL, PFS_RD); pfs_create_file(cpu, "possible", &linsysfs_cpuonline, NULL, NULL, NULL, PFS_RD); pfs_create_file(cpu, "present", &linsysfs_cpuonline, NULL, NULL, NULL, PFS_RD); linsysfs_listcpus(cpu); linsysfs_listnics(net); /* /sys/kernel */ kernel = pfs_create_dir(root, "kernel", NULL, NULL, NULL, 0); /* /sys/kernel/debug, mountpoint for lindebugfs. */ debug = pfs_create_dir(kernel, "debug", NULL, NULL, NULL, 0); return (0); } /* * Destructor */ static int linsysfs_uninit(PFS_INIT_ARGS) { struct scsi_host_queue *scsi_host, *scsi_host_tmp; TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next, scsi_host_tmp) { TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next); free(scsi_host->path, M_TEMP); free(scsi_host, M_TEMP); } return (0); } PSEUDOFS(linsysfs, 1, VFCF_JAIL); #if defined(__aarch64__) || defined(__amd64__) MODULE_DEPEND(linsysfs, linux_common, 1, 1, 1); #else MODULE_DEPEND(linsysfs, linux, 1, 1, 1); #endif
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