tools/usb/usbip/libsrc/sysfs_utils.c

   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
   9 int 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 }