github.com/afumu/libc@v0.0.6/musl/src/legacy/cuserid.c (about)

     1  #define _GNU_SOURCE
     2  #include <pwd.h>
     3  #include <stdio.h>
     4  #include <unistd.h>
     5  
     6  char *cuserid(char *buf)
     7  {
     8  	struct passwd pw, *ppw;
     9  	long pwb[256];
    10  	if (getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw))
    11  		return 0;
    12  	snprintf(buf, L_cuserid, "%s", pw.pw_name);
    13  	return buf;
    14  }