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ape: re-implement getlogin() by stating /proc/$pid/status

--- a/sys/src/ape/lib/ap/plan9/getlogin.c

+++ b/sys/src/ape/lib/ap/plan9/getlogin.c

@@ -1,21 +1,24 @@

-#include <sys/types.h>

-#include <sys/stat.h>

-#include <fcntl.h>

+#include "lib.h"

 #include <unistd.h>

-#include <sys/limits.h>

+#include <stdlib.h>

+#include <stdio.h>

+#include "sys9.h"

+#include "dir.h"

 char *

-getlogin_r(char *buf, int len)

+getlogin_r(char *user, int len)

 {

-	int f, n;

+	char name[32];

+	Dir *dir;

-	f = open("/dev/user", O_RDONLY);

-	if(f < 0)

-		return 0;

-	n = read(f, buf, len);

-	buf[len-1] = 0;

-	close(f);

-	return (n>=0)? buf : 0;

+	snprintf(name, sizeof(name), "/proc/%d/status", getpid());

+	if((dir = _dirstat(name)) == nil){

+		_syserrno();

+		return NULL;

+	}

+	snprintf(user, len, "%s", dir->uid);

+	free(dir);

+	return user;

 }

 char *

-- 

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