126 lines
3.0 KiB
C
126 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* lspci implementation for busybox
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*
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* Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config LSPCI
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//config: bool "lspci (5.7 kb)"
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//config: default y
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//config: #select PLATFORM_LINUX
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//config: help
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//config: lspci is a utility for displaying information about PCI buses in the
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//config: system and devices connected to them.
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//config:
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//config: This version uses sysfs (/sys/bus/pci/devices) only.
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//applet:IF_LSPCI(APPLET(lspci, BB_DIR_USR_BIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_LSPCI) += lspci.o
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//usage:#define lspci_trivial_usage
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//usage: "[-mk]"
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//usage:#define lspci_full_usage "\n\n"
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//usage: "List all PCI devices"
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//usage: "\n"
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//usage: "\n -m Parsable output"
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//usage: "\n -k Show driver"
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#include "libbb.h"
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enum {
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OPT_m = (1 << 0),
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OPT_k = (1 << 1),
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};
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/*
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* PCI_SLOT_NAME PCI_CLASS: PCI_VID:PCI_DID [PCI_SUBSYS_VID:PCI_SUBSYS_DID] [DRIVER]
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*/
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static int FAST_FUNC fileAction(
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const char *fileName,
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struct stat *statbuf UNUSED_PARAM,
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void *userData UNUSED_PARAM,
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int depth UNUSED_PARAM)
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{
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parser_t *parser;
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char *tokens[3];
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char *pci_slot_name = NULL, *driver = NULL;
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int pci_class = 0, pci_vid = 0, pci_did = 0;
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int pci_subsys_vid = 0, pci_subsys_did = 0;
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char *uevent_filename = concat_path_file(fileName, "/uevent");
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parser = config_open2(uevent_filename, fopen_for_read);
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free(uevent_filename);
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while (config_read(parser, tokens, 3, 2, "\0:=", PARSE_NORMAL)) {
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if (strcmp(tokens[0], "DRIVER") == 0) {
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driver = xstrdup(tokens[1]);
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continue;
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}
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if (strcmp(tokens[0], "PCI_CLASS") == 0) {
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pci_class = xstrtou(tokens[1], 16)>>8;
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continue;
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}
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if (strcmp(tokens[0], "PCI_ID") == 0) {
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pci_vid = xstrtou(tokens[1], 16);
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pci_did = xstrtou(tokens[2], 16);
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continue;
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}
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if (strcmp(tokens[0], "PCI_SUBSYS_ID") == 0) {
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pci_subsys_vid = xstrtou(tokens[1], 16);
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pci_subsys_did = xstrtou(tokens[2], 16);
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continue;
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}
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if (strcmp(tokens[0], "PCI_SLOT_NAME") == 0) {
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pci_slot_name = xstrdup(tokens[2]);
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continue;
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}
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}
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config_close(parser);
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if (option_mask32 & OPT_m) {
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printf("%s \"Class %04x\" \"%04x\" \"%04x\" \"%04x\" \"%04x\"",
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pci_slot_name, pci_class, pci_vid, pci_did,
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pci_subsys_vid, pci_subsys_did);
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} else {
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printf("%s Class %04x: %04x:%04x",
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pci_slot_name, pci_class, pci_vid, pci_did);
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}
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if ((option_mask32 & OPT_k) && driver) {
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if (option_mask32 & OPT_m) {
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printf(" \"%s\"", driver);
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} else {
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printf(" %s", driver);
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}
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}
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bb_putchar('\n');
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free(driver);
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free(pci_slot_name);
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return TRUE;
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}
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int lspci_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int lspci_main(int argc UNUSED_PARAM, char **argv)
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{
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getopt32(argv, "m" /*non-compat:*/ "k" /*ignored:*/ "nv");
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recursive_action("/sys/bus/pci/devices",
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ACTION_RECURSE,
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fileAction,
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NULL, /* dirAction */
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NULL, /* userData */
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0 /* depth */);
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return EXIT_SUCCESS;
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}
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