cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sysfs_utils.c (562B)

      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}