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50 lines
1.0 KiB
50 lines
1.0 KiB
7 months ago
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/* lsusb.c - list available USB devices
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*
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* Copyright 2013 Andre Renaud <andre@bluewatersys.com>
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USE_LSUSB(NEWTOY(lsusb, NULL, TOYFLAG_USR|TOYFLAG_BIN))
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config LSUSB
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bool "lsusb"
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default y
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help
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usage: lsusb
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List USB hosts/devices.
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*/
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#include "toys.h"
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static int list_device(struct dirtree *new)
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{
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FILE *file;
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char *name;
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int busnum = 0, devnum = 0, pid = 0, vid = 0;
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if (!new->parent) return DIRTREE_RECURSE;
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if (new->name[0] == '.') return 0;
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name = dirtree_path(new, 0);
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sprintf(toybuf, "%s/uevent", name);
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file = fopen(toybuf, "r");
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if (file) {
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int count = 0;
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while (fgets(toybuf, sizeof(toybuf), file))
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if (sscanf(toybuf, "BUSNUM=%u\n", &busnum)
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|| sscanf(toybuf, "DEVNUM=%u\n", &devnum)
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|| sscanf(toybuf, "PRODUCT=%x/%x/", &pid, &vid)) count++;
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if (count == 3)
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printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum, pid, vid);
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fclose(file);
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}
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free(name);
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return 0;
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}
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void lsusb_main(void)
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{
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dirtree_read("/sys/bus/usb/devices/", list_device);
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}
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