summaryrefslogtreecommitdiffstats
path: root/source/a/usbutils/usbreset.c
diff options
context:
space:
mode:
Diffstat (limited to 'source/a/usbutils/usbreset.c')
-rw-r--r--source/a/usbutils/usbreset.c188
1 files changed, 0 insertions, 188 deletions
diff --git a/source/a/usbutils/usbreset.c b/source/a/usbutils/usbreset.c
deleted file mode 100644
index abab5434c..000000000
--- a/source/a/usbutils/usbreset.c
+++ /dev/null
@@ -1,188 +0,0 @@
-/* usbreset -- send a USB port reset to a USB device */
-/* To build: gcc -o usbreset usbreset.c */
-
-#include <stdio.h>
-#include <stdbool.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <ctype.h>
-#include <limits.h>
-#include <dirent.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-
-#include <linux/usbdevice_fs.h>
-
-
-static char *usbfs = NULL;
-
-struct usbentry {
- int bus_num;
- int dev_num;
- int vendor_id;
- int product_id;
- char vendor_name[128];
- char product_name[128];
-};
-
-static char *sysfs_attr(const char *dev, const char *attr)
-{
- int fd, len = 0;
- char path[PATH_MAX];
- static char buf[129];
-
- memset(buf, 0, sizeof(buf));
- snprintf(path, sizeof(path) - 1, "/sys/bus/usb/devices/%s/%s", dev, attr);
-
- fd = open(path, O_RDONLY);
- if (fd >= 0) {
- len = read(fd, buf, sizeof(buf) - 1);
- close(fd);
- }
-
- while (--len > 0 && isspace(buf[len]))
- buf[len] = 0;
-
- return (len >= 0) ? buf : NULL;
-}
-
-static struct usbentry *parse_devlist(DIR *d)
-{
- char *attr;
- struct dirent *e;
- static struct usbentry dev;
-
- do {
- e = readdir(d);
-
- if (!e)
- return NULL;
- } while (!isdigit(e->d_name[0]) || strchr(e->d_name, ':'));
-
- memset(&dev, 0, sizeof(dev));
-
- attr = sysfs_attr(e->d_name, "busnum");
- if (attr)
- dev.bus_num = strtoul(attr, NULL, 10);
-
- attr = sysfs_attr(e->d_name, "devnum");
- if (attr)
- dev.dev_num = strtoul(attr, NULL, 10);
-
- attr = sysfs_attr(e->d_name, "idVendor");
- if (attr)
- dev.vendor_id = strtoul(attr, NULL, 16);
-
- attr = sysfs_attr(e->d_name, "idProduct");
- if (attr)
- dev.product_id = strtoul(attr, NULL, 16);
-
- attr = sysfs_attr(e->d_name, "manufacturer");
- if (attr)
- strcpy(dev.vendor_name, attr);
-
- attr = sysfs_attr(e->d_name, "product");
- if (attr)
- strcpy(dev.product_name, attr);
-
- if (dev.bus_num && dev.dev_num && dev.vendor_id && dev.product_id)
- return &dev;
-
- return NULL;
-}
-
-static void list_devices(void)
-{
- DIR *devs = opendir("/sys/bus/usb/devices");
- struct usbentry *dev;
-
- if (!devs)
- return;
-
- while ((dev = parse_devlist(devs)) != NULL)
- printf(" Number %03d/%03d ID %04x:%04x %s\n",
- dev->bus_num, dev->dev_num,
- dev->vendor_id, dev->product_id,
- dev->product_name);
-
- closedir(devs);
-}
-
-struct usbentry *find_device(int *bus, int *dev, int *vid, int *pid,
- const char *product)
-{
- DIR *devs = opendir("/sys/bus/usb/devices");
-
- struct usbentry *e, *match = NULL;
-
- if (!devs)
- return NULL;
-
- while ((e = parse_devlist(devs)) != NULL)
- if ((bus && (e->bus_num == *bus) && (e->dev_num == *dev)) ||
- (vid && (e->vendor_id == *vid) && (e->product_id == *pid)) ||
- (product && !strcasecmp(e->product_name, product))) {
- match = e;
- break;
- }
-
- closedir(devs);
-
- return match;
-}
-
-static void reset_device(struct usbentry *dev)
-{
- int fd;
- char path[PATH_MAX];
-
- snprintf(path, sizeof(path) - 1, "/dev/bus/usb/%03d/%03d",
- dev->bus_num, dev->dev_num);
-
- printf("Resetting %s ... ", dev->product_name);
-
- fd = open(path, O_WRONLY);
- if (fd > -1) {
- if (ioctl(fd, USBDEVFS_RESET, 0) < 0)
- printf("failed [%s]\n", strerror(errno));
- else
- printf("ok\n");
-
- close(fd);
- } else {
- printf("can't open [%s]\n", strerror(errno));
- }
-}
-
-
-int main(int argc, char **argv)
-{
- int id1, id2;
- struct usbentry *dev;
-
- if ((argc == 2) && (sscanf(argv[1], "%3d/%3d", &id1, &id2) == 2))
- dev = find_device(&id1, &id2, NULL, NULL, NULL);
- else if ((argc == 2) && (sscanf(argv[1], "%4x:%4x", &id1, &id2) == 2))
- dev = find_device(NULL, NULL, &id1, &id2, NULL);
- else if ((argc == 2) && strlen(argv[1]) < 128)
- dev = find_device(NULL, NULL, NULL, NULL, argv[1]);
- else {
- printf("Usage:\n"
- " usbreset PPPP:VVVV - reset by product and vendor id\n"
- " usbreset BBB/DDD - reset by bus and device number\n"
- " usbreset \"Product\" - reset by product name\n\n"
- "Devices:\n");
- list_devices();
- return 1;
- }
-
- if (!dev) {
- fprintf(stderr, "No such device found\n");
- return 1;
- }
-
- reset_device(dev);
- return 0;
-}