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

   1// SPDX-License-Identifier: GPL-2.0
   2#include <sys/types.h>
   3#include <sys/stat.h>
   4#include <fcntl.h>
   5#include <errno.h>
   6
   7#include "sysfs_utils.h"
   8#include "usbip_common.h"
   9
  10int write_sysfs_attribute(const char *attr_path, const char *new_value,
  11                          size_t len)
  12{
  13        int fd;
  14        int length;
  15
  16        fd = open(attr_path, O_WRONLY);
  17        if (fd < 0) {
  18                dbg("error opening attribute %s", attr_path);
  19                return -1;
  20        }
  21
  22        length = write(fd, new_value, len);
  23        if (length < 0) {
  24                dbg("error writing to attribute %s", attr_path);
  25                close(fd);
  26                return -1;
  27        }
  28
  29        close(fd);
  30
  31        return 0;
  32}
  33