diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/getst.c')
-rw-r--r-- | crypto/kerberosIV/lib/krb/getst.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/getst.c b/crypto/kerberosIV/lib/krb/getst.c new file mode 100644 index 0000000..de99962 --- /dev/null +++ b/crypto/kerberosIV/lib/krb/getst.c @@ -0,0 +1,45 @@ +/* + Copyright (C) 1989 by the Massachusetts Institute of Technology + + Export of this software from the United States of America is assumed + to require a specific license from the United States Government. + It is the responsibility of any person or organization contemplating + export to obtain such a license before exporting. + +WITHIN THAT CONSTRAINT, permission to use, copy, modify, and +distribute this software and its documentation for any purpose and +without fee is hereby granted, provided that the above copyright +notice appear in all copies and that both that copyright notice and +this permission notice appear in supporting documentation, and that +the name of M.I.T. not be used in advertising or publicity pertaining +to distribution of the software without specific, written prior +permission. M.I.T. makes no representations about the suitability of +this software for any purpose. It is provided "as is" without express +or implied warranty. + + */ + +#include "krb_locl.h" + +RCSID("$Id: getst.c,v 1.6 1997/03/23 03:53:11 joda Exp $"); + +/* + * 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. + */ + +int +getst(int fd, char *s, int n) +{ + int count = n; + while (read(fd, s, 1) > 0 && --count) + if (*s++ == '\0') + return (n - count); + *s = '\0'; + return (n - count); +} |