Adding upstream version 1:4.5.upstream/1%4.5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/libmisc/myname.c b/libmisc/myname.c
new file mode 100644
index 0000000..05efdad
--- /dev/null
+++ b/libmisc/myname.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 1996 - 1997, Marek Michałkiewicz
+ * Copyright (c) 2003 - 2005, Tomasz Kłoczko
+ * Copyright (c) 2007 - 2009, Nicolas François
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the copyright holders or contributors may not be used to
+ *    endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * myname.c - determine the current username and get the passwd entry
+ *
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "defines.h"
+#include <pwd.h>
+#include "prototypes.h"
+/*@null@*/ /*@only@*/struct passwd *get_my_pwent (void)
+{
+	struct passwd *pw;
+	const char *cp = getlogin ();
+	uid_t ruid = getuid ();
+
+	/*
+	 * Try getlogin() first - if it fails or returns a non-existent
+	 * username, or a username which doesn't match the real UID, fall
+	 * back to getpwuid(getuid()).  This should work reasonably with
+	 * usernames longer than the utmp limit (8 characters), as well as
+	 * shared UIDs - but not both at the same time...
+	 *
+	 * XXX - when running from su, will return the current user (not
+	 * the original user, like getlogin() does).  Does this matter?
+	 */
+	if ((NULL != cp) && ('\0' != *cp)) {
+		pw = xgetpwnam (cp);
+		if ((NULL != pw) && (pw->pw_uid == ruid)) {
+			return pw;
+		}
+	}
+
+	return xgetpwuid (ruid);
+}
+