More cleanups. Fix things so tinylogin compiles.

Fix a bug in getdelim -- patch from David Whedon <dwhedon@gordian.com>.

1 files changed, 54 insertions, 0 deletions

diff --git a/libc/misc/lock/flock.c b/libc/misc/lock/flock.c
new file mode 100644
index 000000000..3c1264655
--- /dev/null
+++ b/libc/misc/lock/flock.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This file implements the `flock' function in terms of the POSIX.1 `fcntl'
+   locking mechanism.  In 4BSD, these are two incompatible locking mechanisms,
+   perhaps with different semantics?  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/file.h>
+
+/* Apply or remove an advisory lock, according to OPERATION,
+   on the file FD refers to.  */
+int flock( int fd, int operation)
+{
+	struct flock lbuf;
+
+	switch (operation & ~LOCK_NB) {
+	case LOCK_SH:
+		lbuf.l_type = F_RDLCK;
+		break;
+	case LOCK_EX:
+		lbuf.l_type = F_WRLCK;
+		break;
+	case LOCK_UN:
+		lbuf.l_type = F_UNLCK;
+		break;
+	default:
+		errno = EINVAL;
+		return -1;
+	}
+
+	lbuf.l_whence = SEEK_SET;
+	lbuf.l_start = lbuf.l_len = 0L;	/* Lock the whole file.  */
+
+	return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &lbuf);
+}
+