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/* vi: set sw=4 ts=4: */
/*
* lspci implementation for busybox
*
* Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//config:config LSPCI
//config: bool "lspci (6.3 kb)"
//config: default y
//config: help
//config: lspci is a utility for displaying information about PCI buses in the
//config: system and devices connected to them.
//config:
//config: This version uses sysfs (/sys/bus/pci/devices) only.
//applet:IF_LSPCI(APPLET_NOEXEC(lspci, lspci, BB_DIR_USR_BIN, BB_SUID_DROP, lspci))
//kbuild:lib-$(CONFIG_LSPCI) += lspci.o
//usage:#define lspci_trivial_usage
//usage: "[-mk]"
//usage:#define lspci_full_usage "\n\n"
//usage: "List all PCI devices"
//usage: "\n"
//usage: "\n -m Parsable output"
//usage: "\n -k Show driver"
#include "libbb.h"
enum {
OPT_m = (1 << 0),
OPT_k = (1 << 1),
};
/*
* PCI_SLOT_NAME PCI_CLASS: PCI_VID:PCI_DID [PCI_SUBSYS_VID:PCI_SUBSYS_DID] [DRIVER]
*/
static int FAST_FUNC fileAction(struct recursive_state *state UNUSED_PARAM,
const char *fileName,
struct stat *statbuf UNUSED_PARAM)
{
parser_t *parser;
char *tokens[3];
char *pci_slot_name = NULL, *driver = NULL;
int pci_class = 0, pci_vid = 0, pci_did = 0;
int pci_subsys_vid = 0, pci_subsys_did = 0;
char *uevent_filename = concat_path_file(fileName, "/uevent");
parser = config_open2(uevent_filename, fopen_for_read);
free(uevent_filename);
while (config_read(parser, tokens, 3, 2, "\0:=", PARSE_NORMAL)) {
if (strcmp(tokens[0], "DRIVER") == 0) {
driver = xstrdup(tokens[1]);
continue;
}
if (strcmp(tokens[0], "PCI_CLASS") == 0) {
pci_class = xstrtou(tokens[1], 16)>>8;
continue;
}
if (strcmp(tokens[0], "PCI_ID") == 0) {
pci_vid = xstrtou(tokens[1], 16);
pci_did = xstrtou(tokens[2], 16);
continue;
}
if (strcmp(tokens[0], "PCI_SUBSYS_ID") == 0) {
pci_subsys_vid = xstrtou(tokens[1], 16);
pci_subsys_did = xstrtou(tokens[2], 16);
continue;
}
if (strcmp(tokens[0], "PCI_SLOT_NAME") == 0) {
pci_slot_name = xstrdup(tokens[2]);
continue;
}
}
config_close(parser);
if (option_mask32 & OPT_m) {
printf("%s \"Class %04x\" \"%04x\" \"%04x\" \"%04x\" \"%04x\"",
pci_slot_name, pci_class, pci_vid, pci_did,
pci_subsys_vid, pci_subsys_did);
} else {
printf("%s Class %04x: %04x:%04x",
pci_slot_name, pci_class, pci_vid, pci_did);
}
if ((option_mask32 & OPT_k) && driver) {
if (option_mask32 & OPT_m) {
printf(" \"%s\"", driver);
} else {
printf(" %s", driver);
}
}
bb_putchar('\n');
free(driver);
free(pci_slot_name);
return TRUE;
}
int lspci_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int lspci_main(int argc UNUSED_PARAM, char **argv)
{
getopt32(argv, "m" /*non-compat:*/ "k" /*ignored:*/ "nv");
recursive_action("/sys/bus/pci/devices",
ACTION_RECURSE,
fileAction,
NULL, /* dirAction */
NULL /* userData */
);
return EXIT_SUCCESS;
}
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