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authormarkm <markm@FreeBSD.org>1997-09-04 06:04:33 +0000
committermarkm <markm@FreeBSD.org>1997-09-04 06:04:33 +0000
commita8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8 (patch)
tree0b84977f19022a965f8c6145f067f951173f6290 /crypto/kerberosIV/lib/krb/netread.c
downloadFreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.zip
FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.tar.gz
Initial import of KTH eBones. This has been cleaned up to only include
the "core" Kerberos functionality. The rest of the userland will get their own changes later.
Diffstat (limited to 'crypto/kerberosIV/lib/krb/netread.c')
-rw-r--r--crypto/kerberosIV/lib/krb/netread.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/netread.c b/crypto/kerberosIV/lib/krb/netread.c
new file mode 100644
index 0000000..cbc1bd1
--- /dev/null
+++ b/crypto/kerberosIV/lib/krb/netread.c
@@ -0,0 +1,55 @@
+/*
+ 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: netread.c,v 1.6 1997/03/23 03:53:15 joda Exp $");
+
+/*
+ * krb_net_read() reads from the file descriptor "fd" to the buffer
+ * "buf", until either 1) "len" bytes have been read or 2) cannot
+ * read anymore from "fd". It returns the number of bytes read
+ * or a read() error. (The calling interface is identical to
+ * read(2).)
+ *
+ * XXX must not use non-blocking I/O
+ */
+
+int
+krb_net_read (int fd, void *v, size_t len)
+{
+ int cc, len2 = 0;
+ char *buf = v;
+
+ do {
+ cc = read(fd, buf, len);
+ if (cc < 0)
+ return(cc); /* errno is already set */
+ else if (cc == 0) {
+ return(len2);
+ } else {
+ buf += cc;
+ len2 += cc;
+ len -= cc;
+ }
+ } while (len > 0);
+ return(len2);
+}
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