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annotate toys/other/lsusb.c @ 1539:3e85af1f7e22 draft

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First batch of sed tests. Only good for TEST_HOST=1 at the moment because the test infrastructure itself depends on sed, so if an unfinished sed is in the $PATH it goes boing. But hey, corner cases! I have... more.
author Rob Landley <rob@landley.net>
date Wed, 29 Oct 2014 18:44:33 -0500
parents 36993c59a3d3
children
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edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
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1 /* lsusb.c - list available USB devices
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2 *
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3 * Copyright 2013 Andre Renaud <andre@bluewatersys.com>
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4
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5 USE_LSUSB(NEWTOY(lsusb, NULL, TOYFLAG_USR|TOYFLAG_BIN))
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6
edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
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7 config LSUSB
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8 bool "lsusb"
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9 default y
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edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
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10 help
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11 usage: lsusb
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12
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13 List USB hosts/devices.
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14 */
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15
edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
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16 #include "toys.h"
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17
edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
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18 static int list_device(struct dirtree *new)
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19 {
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20 FILE *file;
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21 char *name;
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22 int busnum = 0, devnum = 0, pid = 0, vid = 0;
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23
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24 if (!new->parent) return DIRTREE_RECURSE;
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25 if (new->name[0] == '.') return 0;
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26 name = dirtree_path(new, 0);
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27 snprintf(toybuf, sizeof(toybuf), "%s/%s", name, "/uevent");
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28 file = fopen(toybuf, "r");
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29 if (file) {
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30 int count = 0;
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31
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32 while (fgets(toybuf, sizeof(toybuf), file))
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33 if (sscanf(toybuf, "BUSNUM=%u\n", &busnum)
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34 || sscanf(toybuf, "DEVNUM=%u\n", &devnum)
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35 || sscanf(toybuf, "PRODUCT=%x/%x/", &pid, &vid)) count++;
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36
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37 if (count == 3)
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38 printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum, pid, vid);
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39 fclose(file);
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40 }
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41 free(name);
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edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
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43 return 0;
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44 }
edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
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parents:
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edd8e6fd418d Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
Andre Renaud <andre@bluewatersys.com>
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46 void lsusb_main(void)
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47 {
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48 dirtree_read("/sys/bus/usb/devices/", list_device);
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49 }