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43 lines
811 B
43 lines
811 B
/* usbreset -- send a USB port reset to a USB device */
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/* sudo ./usbreset /dev/bus/usb/Bus/Device */
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <linux/usbdevice_fs.h>
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int main(int argc, char **argv)
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{
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const char *filename;
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int fd;
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int rc;
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if (argc != 2) {
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fprintf(stderr, "Usage: usbreset device-filename\n");
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return 1;
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}
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filename = argv[1];
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fd = open(filename, O_WRONLY);
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if (fd < 0) {
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perror("Error opening output file");
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return 1;
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}
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printf("Resetting USB device %s\n", filename);
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rc = ioctl(fd, USBDEVFS_RESET, 0);
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if (rc < 0) {
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perror("Error in ioctl");
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return 1;
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}
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printf("Reset successful\n");
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close(fd);
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return 0;
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}
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