#include <u.h>#include <libc.h> intpostfd(char *name, int pfd){	int fd;	char buf[80]; 	snprint(buf, sizeof buf, "/srv/%s", name);	fd = create(buf, OWRITE|ORCLOSE|OCEXEC, 0600);	if(fd < 0)		return -1;	if(fprint(fd, "%d", pfd) < 0){		close(fd);		return -1;	}	return 0;} char*estrdup(char* s){	s = strdup(s);	if (s == nil)		sysfatal("estrdup: not enough memory");	setmalloctag(s, getcallerpc(&s));	return s;} void*emalloc(int sz){	void*	s; 	s = malloc(sz);	if (s == nil)		sysfatal("emalloc: not enough memory");	setmalloctag(s, getcallerpc(&sz));	return s;} void*erealloc(void* p, int sz){ 	p = realloc(p, sz);	if (p == nil)		sysfatal("erealloc: not enough memory");	return p;}