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authorTrygve Laugstøl <trygvis@inamo.no>2017-05-30 12:47:17 +0200
committerTrygve Laugstøl <trygvis@inamo.no>2017-05-30 12:47:17 +0200
commit9737d21262d03cc802a93f4cd64a240537430bd9 (patch)
tree239ab9072393f0de7be79f42cc933c9f43ece81b /src
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o Initial import of usbreset.
Diffstat (limited to 'src')
-rw-r--r--src/usbreset.cpp40
1 files changed, 40 insertions, 0 deletions
diff --git a/src/usbreset.cpp b/src/usbreset.cpp
new file mode 100644
index 0000000..76c30c0
--- /dev/null
+++ b/src/usbreset.cpp
@@ -0,0 +1,40 @@
+/* usbreset -- send a USB port reset to a USB device */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+
+#include <linux/usbdevice_fs.h>
+
+
+int main(int argc, char **argv)
+{
+ const char *filename;
+ int fd;
+ int rc;
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: usbreset device-filename\n");
+ return 1;
+ }
+ filename = argv[1];
+
+ fd = open(filename, O_WRONLY);
+ if (fd < 0) {
+ perror("Error opening output file");
+ return 1;
+ }
+
+ printf("Resetting USB device %s\n", filename);
+ rc = ioctl(fd, USBDEVFS_RESET, 0);
+ if (rc < 0) {
+ perror("Error in ioctl");
+ return 1;
+ }
+ printf("Reset successful\n");
+
+ close(fd);
+ return 0;
+}