LXR linux/tools/usb/usbip/libsrc/sysfs

   1#include <sys/types.h>
   2#include <sys/stat.h>
   3#include <fcntl.h>
   4#include <errno.h>
   5
   6#include "sysfs_utils.h"
   7#include "usbip_common.h"
   8
   9int write_sysfs_attribute(const char *attr_path, const char *new_value,
  10                          size_t len)
  11{
  12        int fd;
  13        int length;
  14
  15        fd = open(attr_path, O_WRONLY);
  16        if (fd < 0) {
  17                dbg("error opening attribute %s", attr_path);
  18                return -1;
  19        }
  20
  21        length = write(fd, new_value, len);
  22        if (length < 0) {
  23                dbg("error writing to attribute %s", attr_path);
  24                close(fd);
  25                return -1;
  26        }
  27
  28        close(fd);
  29
  30        return 0;
  31}
  32