#include <fcntl.h>
#include <string.h>
#include <unistd.h>

#include "pthread_impl.h"

int pthread_setname_np(pthread_t thread, const char *name)
{
	int fd, status = 0;
	char f[sizeof "/proc/self/task//comm" + 7];
	ssize_t len;

	if ((len = strlen(name)) > 15) return ERANGE;

	snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid);
	if ((fd = open(f, O_WRONLY)) < 0) return errno;
	if (write(fd, name, len) < 0) status = errno;

	close(fd);
	return status;
}