src/internal/procfdname.c

570af302Sopenharmony_ci#include "syscall.h"
570af302Sopenharmony_ci
570af302Sopenharmony_civoid __procfdname(char *buf, unsigned fd)
570af302Sopenharmony_ci{
570af302Sopenharmony_ci	unsigned i, j;
570af302Sopenharmony_ci	for (i=0; (buf[i] = "/proc/self/fd/"[i]); i++);
570af302Sopenharmony_ci	if (!fd) {
570af302Sopenharmony_ci		buf[i] = '0';
570af302Sopenharmony_ci		buf[i+1] = 0;
570af302Sopenharmony_ci		return;
570af302Sopenharmony_ci	}
570af302Sopenharmony_ci	for (j=fd; j; j/=10, i++);
570af302Sopenharmony_ci	buf[i] = 0;
570af302Sopenharmony_ci	for (; fd; fd/=10) buf[--i] = '0' + fd%10;
570af302Sopenharmony_ci}