blob: 514678afd31631cd729dbff06b50343601a6e63f
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * lspci implementation for busybox |
4 | * |
5 | * Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
8 | */ |
9 | |
10 | //usage:#define lspci_trivial_usage |
11 | //usage: "[-mk]" |
12 | //usage:#define lspci_full_usage "\n\n" |
13 | //usage: "List all PCI devices" |
14 | //usage: "\n" |
15 | //usage: "\n -m Parsable output" |
16 | //usage: "\n -k Show driver" |
17 | |
18 | #include "libbb.h" |
19 | |
20 | enum { |
21 | OPT_m = (1 << 0), |
22 | OPT_k = (1 << 1), |
23 | }; |
24 | |
25 | /* |
26 | * PCI_SLOT_NAME PCI_CLASS: PCI_VID:PCI_DID [PCI_SUBSYS_VID:PCI_SUBSYS_DID] [DRIVER] |
27 | */ |
28 | static int FAST_FUNC fileAction( |
29 | const char *fileName, |
30 | struct stat *statbuf UNUSED_PARAM, |
31 | void *userData UNUSED_PARAM, |
32 | int depth UNUSED_PARAM) |
33 | { |
34 | parser_t *parser; |
35 | char *tokens[3]; |
36 | char *pci_slot_name = NULL, *driver = NULL; |
37 | int pci_class = 0, pci_vid = 0, pci_did = 0; |
38 | int pci_subsys_vid = 0, pci_subsys_did = 0; |
39 | |
40 | char *uevent_filename = concat_path_file(fileName, "/uevent"); |
41 | parser = config_open2(uevent_filename, fopen_for_read); |
42 | free(uevent_filename); |
43 | |
44 | while (config_read(parser, tokens, 3, 2, "\0:=", PARSE_NORMAL)) { |
45 | if (strcmp(tokens[0], "DRIVER") == 0) { |
46 | driver = xstrdup(tokens[1]); |
47 | continue; |
48 | } |
49 | |
50 | if (strcmp(tokens[0], "PCI_CLASS") == 0) { |
51 | pci_class = xstrtou(tokens[1], 16)>>8; |
52 | continue; |
53 | } |
54 | |
55 | if (strcmp(tokens[0], "PCI_ID") == 0) { |
56 | pci_vid = xstrtou(tokens[1], 16); |
57 | pci_did = xstrtou(tokens[2], 16); |
58 | continue; |
59 | } |
60 | |
61 | if (strcmp(tokens[0], "PCI_SUBSYS_ID") == 0) { |
62 | pci_subsys_vid = xstrtou(tokens[1], 16); |
63 | pci_subsys_did = xstrtou(tokens[2], 16); |
64 | continue; |
65 | } |
66 | |
67 | if (strcmp(tokens[0], "PCI_SLOT_NAME") == 0) { |
68 | pci_slot_name = xstrdup(tokens[2]); |
69 | continue; |
70 | } |
71 | } |
72 | config_close(parser); |
73 | |
74 | |
75 | if (option_mask32 & OPT_m) { |
76 | printf("%s \"Class %04x\" \"%04x\" \"%04x\" \"%04x\" \"%04x\"", |
77 | pci_slot_name, pci_class, pci_vid, pci_did, |
78 | pci_subsys_vid, pci_subsys_did); |
79 | } else { |
80 | printf("%s Class %04x: %04x:%04x", |
81 | pci_slot_name, pci_class, pci_vid, pci_did); |
82 | } |
83 | |
84 | if ((option_mask32 & OPT_k) && driver) { |
85 | if (option_mask32 & OPT_m) { |
86 | printf(" \"%s\"", driver); |
87 | } else { |
88 | printf(" %s", driver); |
89 | } |
90 | } |
91 | bb_putchar('\n'); |
92 | |
93 | free(driver); |
94 | free(pci_slot_name); |
95 | |
96 | return TRUE; |
97 | } |
98 | |
99 | int lspci_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
100 | int lspci_main(int argc UNUSED_PARAM, char **argv) |
101 | { |
102 | getopt32(argv, "m" /*non-compat:*/ "k" /*ignored:*/ "nv"); |
103 | |
104 | recursive_action("/sys/bus/pci/devices", |
105 | ACTION_RECURSE, |
106 | fileAction, |
107 | NULL, /* dirAction */ |
108 | NULL, /* userData */ |
109 | 0 /* depth */); |
110 | |
111 | return EXIT_SUCCESS; |
112 | } |
113 |