tegrakernel/kernel/kernel-4.9/tools/usb/usbip/libsrc/sysfs_utils.c

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2022-02-16 09:13:02 -06:00
#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;
}