PWN-Hunter/android_external_toybox
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Tighten up lsusb, default to "y".

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This commit is contained in:
Rob Landley 2013-05-14 20:42:54 -05:00
parent 00474ef9d3
commit 0ae71803f7
1 changed files with 19 additions and 30 deletions
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49
toys/other/lsusb.c
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@ -6,9 +6,11 @@ USE_LSUSB(NEWTOY(lsusb, NULL, TOYFLAG_USR|TOYFLAG_BIN))
config LSUSB
bool "lsusb"
default n
default y
help
usage: lsusb
List USB hosts/devices.
*/
#include "toys.h"
@ -17,38 +19,26 @@ static int list_device(struct dirtree *new)
{
FILE *file;
char *name;
int busnum = 0;
int devnum = 0;
int pid = 0;
int vid = 0;
if (!new->parent)
return DIRTREE_RECURSE;
if (new->name[0] == '.')
return 0;
int busnum = 0, devnum = 0, pid = 0, vid = 0;
if (!new->parent) return DIRTREE_RECURSE;
if (new->name[0] == '.') return 0;
name = dirtree_path(new, 0);
snprintf(toybuf, sizeof(toybuf), "%s/%s", name, "/uevent");
file = fopen(toybuf, "r");
if (!file)
return 0;
if (!fgets(toybuf, sizeof(toybuf), file) || !strncmp(toybuf, "DEVTYPE=", 8)) {
fclose(file);
return 0;
}
while (fgets(toybuf, sizeof(toybuf), file)) {
if (!strncmp(toybuf, "BUSNUM=", 7))
busnum = atoi(&toybuf[7]);
if (!strncmp(toybuf, "DEVNUM=", 7))
devnum = atoi(&toybuf[7]);
if (!strncmp(toybuf, "PRODUCT=", 8)) {
char *pos = strchr(toybuf, '/');
pid = xstrtoul(&toybuf[8], NULL, 16);
if (pos)
vid = xstrtoul(pos + 1, NULL, 16);
}
}
fclose(file);
if (file) {
int count = 0;
printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum, pid, vid);
while (fgets(toybuf, sizeof(toybuf), file))
if (sscanf(toybuf, "BUSNUM=%u\n", &busnum)
|| sscanf(toybuf, "DEVNUM=%u\n", &devnum)
|| sscanf(toybuf, "PRODUCT=%x/%x/", &pid, &vid)) count++;
if (count == 3)
printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum, pid, vid);
fclose(file);
}
free(name);
return 0;
}
@ -56,5 +46,4 @@ static int list_device(struct dirtree *new)
void lsusb_main(void)
{
dirtree_read("/sys/bus/usb/devices/", list_device);
return;
}