Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / usb / usbip / libsrc / sysfs_utils.c

diff --git a/kernel/tools/usb/usbip/libsrc/sysfs_utils.c b/kernel/tools/usb/usbip/libsrc/sysfs_utils.c
new file mode 100644 (file)
index 0000000..36ac88e
--- /dev/null
+++ b/kernel/tools/usb/usbip/libsrc/sysfs_utils.c
@@ -0,0 +1,31 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "sysfs_utils.h"
+#include "usbip_common.h"
+
+int write_sysfs_attribute(const char *attr_path, const char *new_value,
+                         size_t len)
+{
+       int fd;
+       int length;
+
+       fd = open(attr_path, O_WRONLY);
+       if (fd < 0) {
+               dbg("error opening attribute %s", attr_path);
+               return -1;
+       }
+
+       length = write(fd, new_value, len);
+       if (length < 0) {
+               dbg("error writing to attribute %s", attr_path);
+               close(fd);
+               return -1;
+       }
+
+       close(fd);
+
+       return 0;
+}