Mercurial > hg > toybox
annotate toys/other/lspci.c @ 1746:b11f536bac74 draft
install -D bugfix from David Halls.
(I tweaked some comment text while I was there.)
| author | Rob Landley <rob@landley.net> |
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| date | Sat, 21 Mar 2015 15:49:38 -0500 |
| parents | da1bf31ed322 |
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| rev | line source |
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I've written an lspci implementation.
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1 /* |
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2 * lspci - written by Isaac Dunham |
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3 |
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4 USE_LSPCI(NEWTOY(lspci, "emkn"USE_LSPCI_TEXT("@i:"), TOYFLAG_USR|TOYFLAG_BIN)) |
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5 |
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6 config LSPCI |
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7 bool "lspci" |
| 1432 | 8 default y |
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9 help |
| 1289 | 10 usage: lspci [-ekm] |
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11 |
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12 List PCI devices. |
| 1289 | 13 |
| 1431 | 14 -e Print all 6 digits in class |
| 1289 | 15 -k Print kernel driver |
| 16 -m Machine parseable format | |
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17 |
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18 config LSPCI_TEXT |
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19 bool "lspci readable output" |
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20 depends on LSPCI |
| 1432 | 21 default y |
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22 help |
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23 usage: lspci [-n] [-i FILE ] |
| 1289 | 24 |
| 25 -n Numeric output (repeat for readable and numeric) | |
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26 -i PCI ID database (default /usr/share/misc/pci.ids) |
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27 |
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28 */ |
| 1289 | 29 |
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30 #define FOR_lspci |
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31 #include "toys.h" |
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32 |
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33 GLOBALS( |
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34 char *ids; |
| 1289 | 35 long numeric; |
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36 |
| 1289 | 37 FILE *db; |
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38 ) |
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39 |
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40 int do_lspci(struct dirtree *new) |
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41 { |
| 1431 | 42 char *p = toybuf, *vendor = toybuf+9, *device = toybuf+18, |
| 43 driver[256], *vbig = 0, *dbig = 0, **fields; | |
| 44 int dirfd; | |
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45 |
| 1289 | 46 if (!new->parent) return DIRTREE_RECURSE; |
| 1431 | 47 |
| 48 // Parse data out of /proc | |
| 49 | |
| 50 if (-1 == (dirfd = openat(dirtree_parentfd(new), new->name, O_RDONLY))) | |
| 51 return 0; | |
| 52 | |
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53 // it's ok for the driver link not to be there, whatever fortify says |
| 1431 | 54 *driver = 0; |
| 55 if (toys.optflags & FLAG_k) | |
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56 if (readlinkat(dirfd, "driver", driver, sizeof(driver))) {}; |
| 1431 | 57 |
| 58 for (fields = (char*[]){"class", "vendor", "device", 0}; *fields; fields++) { | |
| 59 int fd, size = 6 + 2*((toys.optflags & FLAG_e) && p == toybuf); | |
| 60 *p = 0; | |
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61 |
| 1431 | 62 if (-1 == (fd = openat(dirfd, *fields, O_RDONLY))) { |
| 63 close(dirfd); | |
| 64 return 0; | |
| 65 } | |
| 66 xreadall(fd, p, size); | |
| 67 memmove(p, p+2, size -= 2); | |
| 68 p[size] = 0; | |
| 69 close(fd); | |
| 70 p += 9; | |
| 71 } | |
| 72 | |
| 73 close(dirfd); | |
| 74 | |
| 75 // Lookup/display data from pci.ids? | |
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76 |
| 1431 | 77 if (CFG_LSPCI_TEXT && TT.db) { |
| 78 if (TT.numeric != 1) { | |
| 79 char *s; | |
| 1289 | 80 |
| 1431 | 81 fseek(TT.db, 0, SEEK_SET); |
| 82 while (!vbig || !dbig) { | |
| 83 s = p; | |
| 84 if (!fgets(s, sizeof(toybuf)-(p-toybuf)-1, TT.db)) break; | |
| 85 while (isspace(*s)) s++; | |
| 86 if (*s == '#') continue; | |
| 87 if (vbig && s == p) break; | |
| 88 if (strstart(&s, vbig ? device : vendor)) { | |
| 89 if (vbig) dbig = s+2; | |
| 90 else vbig = s+2; | |
| 91 s += strlen(s); | |
| 92 s[-1] = 0; // trim ending newline | |
| 93 p = s + 1; | |
| 94 } | |
| 95 } | |
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96 } |
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97 |
| 1431 | 98 if (TT.numeric > 1) { |
| 99 printf((toys.optflags & FLAG_m) | |
| 100 ? "%s, \"%s\" \"%s [%s]\" \"%s [%s]\"" | |
| 101 : "%s Class %s: %s [%s] %s [%s]", | |
| 102 new->name+5, toybuf, vbig ? vbig : "", vendor, | |
| 103 dbig ? dbig : "", device); | |
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104 |
| 1431 | 105 goto driver; |
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106 } |
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107 } |
| 1289 | 108 |
| 1431 | 109 printf((toys.optflags & FLAG_m) ? "%s \"%s\" \"%s\" \"%s\"" |
| 110 : "%s Class %s: %s:%s", new->name+5, toybuf, | |
| 111 vbig ? vbig : vendor, dbig ? dbig : device); | |
| 112 | |
| 113 driver: | |
| 114 if (*driver) | |
| 115 printf((toys.optflags & FLAG_m) ? " \"%s\"" : " %s", basename(driver)); | |
| 116 xputc('\n'); | |
| 117 | |
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118 return 0; |
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119 } |
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120 |
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121 void lspci_main(void) |
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122 { |
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bc618abf4fb2
Bugfix from Isaac Dunham (new pci database has # comments in it) and some minor cleanups I had in my tree already.
Rob Landley <rob@landley.net>
parents:
1293
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123 if (CFG_LSPCI_TEXT && TT.numeric != 1) { |
| 1431 | 124 if (!TT.ids) TT.ids = "/usr/share/misc/pci.ids"; |
| 125 if (!(TT.db = fopen(TT.ids, "r"))) | |
| 126 perror_msg("could not open PCI ID db"); | |
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127 } |
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parents:
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128 |
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129 dirtree_read("/sys/bus/pci/devices", do_lspci); |
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130 } |