/*
* The PCI Utilities -- Show Kernel Drivers
*
- * Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
+ * Copyright (c) 1997--2013 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <sys/utsname.h>
+#ifdef PCI_USE_LIBKMOD
+
+#include <libkmod.h>
+
+static struct kmod_ctx *kmod_ctx;
+
+static int
+show_kernel_init(void)
+{
+ static int show_kernel_inited = -1;
+ if (show_kernel_inited >= 0)
+ return show_kernel_inited;
+
+ struct utsname uts;
+ if (uname(&uts) < 0)
+ die("uname() failed: %m");
+ char *name = alloca(64 + strlen(uts.release));
+ sprintf(name, "/lib/modules/%s", uts.release);
+
+ kmod_ctx = kmod_new(name, NULL);
+ if (!kmod_ctx)
+ {
+ fprintf(stderr, "lspci: Unable to initialize libkmod context\n");
+ goto failed;
+ }
+
+ int err;
+ if ((err = kmod_load_resources(kmod_ctx)) < 0)
+ {
+ fprintf(stderr, "lspci: Unable to load libkmod resources: error %d\n", err);
+ goto failed;
+ }
+
+ show_kernel_inited = 1;
+ return 1;
+
+failed:
+ show_kernel_inited = 0;
+ return 0;
+}
+
+void
+show_kernel_cleanup(void)
+{
+ if (kmod_ctx)
+ kmod_unref(kmod_ctx);
+}
+
+static const char *next_module(struct device *d)
+{
+ static struct kmod_list *klist, *kcurrent;
+ static struct kmod_module *kmodule;
+
+ if (kmodule)
+ {
+ kmod_module_unref(kmodule);
+ kmodule = NULL;
+ }
+
+ if (!klist)
+ {
+ pci_fill_info(d->dev, PCI_FILL_MODULE_ALIAS);
+ if (!d->dev->module_alias)
+ return NULL;
+ int err = kmod_module_new_from_lookup(kmod_ctx, d->dev->module_alias, &klist);
+ if (err < 0)
+ {
+ fprintf(stderr, "lspci: libkmod lookup failed: error %d\n", err);
+ return NULL;
+ }
+ kcurrent = klist;
+ }
+ else
+ kcurrent = kmod_list_next(klist, kcurrent);
+
+ if (kcurrent)
+ {
+ kmodule = kmod_module_get_module(kcurrent);
+ return kmod_module_get_name(kmodule);
+ }
+
+ kmod_module_unref_list(klist);
+ klist = NULL;
+ return NULL;
+}
+
+#else
+
struct pcimap_entry {
struct pcimap_entry *next;
unsigned int vendor, device;
static struct pcimap_entry *pcimap_head;
-static void
-load_pcimap(void)
+static int
+show_kernel_init(void)
{
static int tried_pcimap;
struct utsname uts;
FILE *f;
if (tried_pcimap)
- return;
+ return 1;
tried_pcimap = 1;
if (name = opt_pcimap)
sprintf(name, "/lib/modules/%s/modules.pcimap", uts.release);
f = fopen(name, "r");
if (!f)
- return;
+ return 1;
}
while (fgets(line, sizeof(line), f))
strcpy(e->module, line);
}
fclose(f);
+
+ return 1;
}
static int
#undef MATCH
}
+static const char *next_module(struct device *d)
+{
+ static struct pcimap_entry *current;
+
+ if (!current)
+ current = pcimap_head;
+ else
+ current = current->next;
+
+ while (current)
+ {
+ if (match_pcimap(d, current))
+ return current->module;
+ current = current->next;
+ }
+
+ return NULL;
+}
+
+void
+show_kernel_cleanup(void)
+{
+}
+
+#endif
+
#define DRIVER_BUF_SIZE 1024
static char *
return buf;
}
+static const char *
+next_module_filtered(struct device *d)
+{
+ static char prev_module[256];
+ const char *module;
+
+ while (module = next_module(d))
+ {
+ if (strcmp(module, prev_module))
+ {
+ strncpy(prev_module, module, sizeof(prev_module));
+ prev_module[sizeof(prev_module) - 1] = 0;
+ return module;
+ }
+ }
+ prev_module[0] = 0;
+ return NULL;
+}
+
void
show_kernel(struct device *d)
{
char buf[DRIVER_BUF_SIZE];
- char *driver;
- struct pcimap_entry *e, *last = NULL;
+ const char *driver, *module;
if (driver = find_driver(d, buf))
printf("\tKernel driver in use: %s\n", driver);
- load_pcimap();
- for (e=pcimap_head; e; e=e->next)
- if (match_pcimap(d, e) && (!last || strcmp(last->module, e->module)))
- {
- printf("%s %s", (last ? "," : "\tKernel modules:"), e->module);
- last = e;
- }
- if (last)
+ if (!show_kernel_init())
+ return;
+
+ int cnt = 0;
+ while (module = next_module_filtered(d))
+ printf("%s %s", (cnt++ ? "," : "\tKernel modules:"), module);
+ if (cnt)
putchar('\n');
}
show_kernel_machine(struct device *d)
{
char buf[DRIVER_BUF_SIZE];
- char *driver;
- struct pcimap_entry *e, *last = NULL;
+ const char *driver, *module;
if (driver = find_driver(d, buf))
printf("Driver:\t%s\n", driver);
- load_pcimap();
- for (e=pcimap_head; e; e=e->next)
- if (match_pcimap(d, e) && (!last || strcmp(last->module, e->module)))
- {
- printf("Module:\t%s\n", e->module);
- last = e;
- }
+ if (!show_kernel_init())
+ return;
+
+ while (module = next_module_filtered(d))
+ printf("Module:\t%s\n", module);
}
#else
{
}
+void
+show_kernel_cleanup(void)
+{
+}
+
#endif