/* * $Source: /mit/kerberos/src/lib/krb/RCS/getst.c,v $ * $Author: jtkohl $ * * Copyright 1987, 1988 by the Massachusetts Institute of Technology. * * For copying and distribution information, please see the file * <mit-copyright.h>. */ #ifndef lint static char rcsid_getst_c[] = "$Header: getst.c,v 4.5 88/11/15 16:31:39 jtkohl Exp $"; #endif /* lint */ #include <mit-copyright.h> /* * getst() takes a file descriptor, a string and a count. It reads * from the file until either it has read "count" characters, or until * it reads a null byte. When finished, what has been read exists in * the given string "s". If "count" characters were actually read, the * last is changed to a null, so the returned string is always null- * terminated. getst() returns the number of characters read, including * the null terminator. */ getst(fd, s, n) int fd; register char *s; { register count = n; while (read(fd, s, 1) > 0 && --count) if (*s++ == '\0') return (n - count); *s = '\0'; return (n - count); }