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/*
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* The PCI Utilities -- Show Kernel Drivers
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*
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* Copyright (c) 1997--2013 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "lspci.h"
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#ifdef PCI_OS_LINUX
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#include <sys/utsname.h>
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#ifdef PCI_USE_LIBKMOD
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#include <libkmod.h>
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static struct kmod_ctx *kmod_ctx;
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static int
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show_kernel_init(void)
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{
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static int show_kernel_inited = -1;
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if (show_kernel_inited >= 0)
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return show_kernel_inited;
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kmod_ctx = kmod_new(NULL, NULL);
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if (!kmod_ctx)
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{
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fprintf(stderr, "lspci: Unable to initialize libkmod context\n");
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goto failed;
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}
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int err;
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if ((err = kmod_load_resources(kmod_ctx)) < 0)
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{
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fprintf(stderr, "lspci: Unable to load libkmod resources: error %d\n", err);
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goto failed;
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}
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show_kernel_inited = 1;
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return 1;
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failed:
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show_kernel_inited = 0;
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return 0;
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}
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void
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show_kernel_cleanup(void)
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{
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if (kmod_ctx)
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kmod_unref(kmod_ctx);
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}
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static const char *next_module(struct device *d)
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{
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static struct kmod_list *klist, *kcurrent;
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static struct kmod_module *kmodule;
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if (kmodule)
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{
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kmod_module_unref(kmodule);
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kmodule = NULL;
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}
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if (!klist)
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{
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pci_fill_info(d->dev, PCI_FILL_MODULE_ALIAS);
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if (!d->dev->module_alias)
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return NULL;
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int err = kmod_module_new_from_lookup(kmod_ctx, d->dev->module_alias, &klist);
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if (err < 0)
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{
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fprintf(stderr, "lspci: libkmod lookup failed: error %d\n", err);
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return NULL;
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}
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kcurrent = klist;
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}
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else
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kcurrent = kmod_list_next(klist, kcurrent);
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if (kcurrent)
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{
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kmodule = kmod_module_get_module(kcurrent);
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return kmod_module_get_name(kmodule);
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}
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kmod_module_unref_list(klist);
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klist = NULL;
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return NULL;
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}
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#else
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struct pcimap_entry {
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struct pcimap_entry *next;
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unsigned int vendor, device;
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unsigned int subvendor, subdevice;
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unsigned int class, class_mask;
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char module[1];
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};
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static struct pcimap_entry *pcimap_head;
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static int
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show_kernel_init(void)
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{
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static int tried_pcimap;
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struct utsname uts;
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char *name, line[1024];
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FILE *f;
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if (tried_pcimap)
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return 1;
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tried_pcimap = 1;
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if (name = opt_pcimap)
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{
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f = fopen(name, "r");
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if (!f)
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die("Cannot open pcimap file %s: %m", name);
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}
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else
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{
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if (uname(&uts) < 0)
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die("uname() failed: %m");
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name = alloca(64 + strlen(uts.release));
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sprintf(name, "/lib/modules/%s/modules.pcimap", uts.release);
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f = fopen(name, "r");
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if (!f)
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return 1;
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}
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while (fgets(line, sizeof(line), f))
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{
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char *c = strchr(line, '\n');
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struct pcimap_entry *e;
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if (!c)
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die("Unterminated or too long line in %s", name);
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*c = 0;
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if (!line[0] || line[0] == '#')
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continue;
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c = line;
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while (*c && *c != ' ' && *c != '\t')
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c++;
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if (!*c)
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continue; /* FIXME: Emit warnings! */
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*c++ = 0;
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e = xmalloc(sizeof(*e) + strlen(line));
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if (sscanf(c, "%i%i%i%i%i%i",
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&e->vendor, &e->device,
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&e->subvendor, &e->subdevice,
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&e->class, &e->class_mask) != 6)
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continue;
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e->next = pcimap_head;
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pcimap_head = e;
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strcpy(e->module, line);
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}
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fclose(f);
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return 1;
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}
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static int
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match_pcimap(struct device *d, struct pcimap_entry *e)
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{
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struct pci_dev *dev = d->dev;
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unsigned int class = get_conf_long(d, PCI_REVISION_ID) >> 8;
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word subv, subd;
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#define MATCH(x, y) ((y) > 0xffff || (x) == (y))
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get_subid(d, &subv, &subd);
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return
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MATCH(dev->vendor_id, e->vendor) &&
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MATCH(dev->device_id, e->device) &&
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MATCH(subv, e->subvendor) &&
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MATCH(subd, e->subdevice) &&
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(class & e->class_mask) == e->class;
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#undef MATCH
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}
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static const char *next_module(struct device *d)
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{
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static struct pcimap_entry *current;
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if (!current)
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current = pcimap_head;
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else
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current = current->next;
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while (current)
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{
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if (match_pcimap(d, current))
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return current->module;
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current = current->next;
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}
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return NULL;
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}
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void
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show_kernel_cleanup(void)
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9fb349 |
{
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Packit |
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}
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#endif
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#define DRIVER_BUF_SIZE 1024
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static char *
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find_driver(struct device *d, char *buf)
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{
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struct pci_dev *dev = d->dev;
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char name[1024], *drv, *base;
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int n;
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if (dev->access->method != PCI_ACCESS_SYS_BUS_PCI)
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return NULL;
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base = pci_get_param(dev->access, "sysfs.path");
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if (!base || !base[0])
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return NULL;
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n = snprintf(name, sizeof(name), "%s/devices/%04x:%02x:%02x.%d/driver",
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base, dev->domain, dev->bus, dev->dev, dev->func);
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if (n < 0 || n >= (int)sizeof(name))
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die("show_driver: sysfs device name too long, why?");
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n = readlink(name, buf, DRIVER_BUF_SIZE);
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if (n < 0)
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return NULL;
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if (n >= DRIVER_BUF_SIZE)
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return "<name-too-long>";
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buf[n] = 0;
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if (drv = strrchr(buf, '/'))
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return drv+1;
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else
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return buf;
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}
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static const char *
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9fb349 |
next_module_filtered(struct device *d)
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9fb349 |
{
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9fb349 |
static char prev_module[256];
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9fb349 |
const char *module;
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while (module = next_module(d))
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{
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if (strcmp(module, prev_module))
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{
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strncpy(prev_module, module, sizeof(prev_module));
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prev_module[sizeof(prev_module) - 1] = 0;
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return module;
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}
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}
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prev_module[0] = 0;
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return NULL;
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}
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9fb349 |
void
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9fb349 |
show_kernel(struct device *d)
|
|
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9fb349 |
{
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9fb349 |
char buf[DRIVER_BUF_SIZE];
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9fb349 |
const char *driver, *module;
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9fb349 |
|
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if (driver = find_driver(d, buf))
|
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9fb349 |
printf("\tKernel driver in use: %s\n", driver);
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9fb349 |
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9fb349 |
if (!show_kernel_init())
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Packit |
9fb349 |
return;
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|
Packit |
9fb349 |
|
|
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9fb349 |
int cnt = 0;
|
|
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9fb349 |
while (module = next_module_filtered(d))
|
|
Packit |
9fb349 |
printf("%s %s", (cnt++ ? "," : "\tKernel modules:"), module);
|
|
Packit |
9fb349 |
if (cnt)
|
|
Packit |
9fb349 |
putchar('\n');
|
|
Packit |
9fb349 |
}
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
void
|
|
Packit |
9fb349 |
show_kernel_machine(struct device *d)
|
|
Packit |
9fb349 |
{
|
|
Packit |
9fb349 |
char buf[DRIVER_BUF_SIZE];
|
|
Packit |
9fb349 |
const char *driver, *module;
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
if (driver = find_driver(d, buf))
|
|
Packit |
9fb349 |
printf("Driver:\t%s\n", driver);
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
if (!show_kernel_init())
|
|
Packit |
9fb349 |
return;
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
while (module = next_module_filtered(d))
|
|
Packit |
9fb349 |
printf("Module:\t%s\n", module);
|
|
Packit |
9fb349 |
}
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|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
#else
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
void
|
|
Packit |
9fb349 |
show_kernel(struct device *d UNUSED)
|
|
Packit |
9fb349 |
{
|
|
Packit |
9fb349 |
}
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
void
|
|
Packit |
9fb349 |
show_kernel_machine(struct device *d UNUSED)
|
|
Packit |
9fb349 |
{
|
|
Packit |
9fb349 |
}
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
void
|
|
Packit |
9fb349 |
show_kernel_cleanup(void)
|
|
Packit |
9fb349 |
{
|
|
Packit |
9fb349 |
}
|
|
Packit |
9fb349 |
|
|
Packit |
9fb349 |
#endif
|
|
Packit |
9fb349 |
|