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authorEric Andersen <andersen@codepoet.org>2001-04-20 18:48:34 +0000
committerEric Andersen <andersen@codepoet.org>2001-04-20 18:48:34 +0000
commit4a536a21ad04493e5ab18d2dfb5988e0576abbdd (patch)
tree83f8058daefdead79ad46bc8ac271fb2722fb3b4 /libc/unistd
parent4215cc76bd0d0c1fa1cf4ea7f0568243b77190e2 (diff)
Add in a trivial getlogin implementation
Diffstat (limited to 'libc/unistd')
-rw-r--r--libc/unistd/getlogin.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/libc/unistd/getlogin.c b/libc/unistd/getlogin.c
new file mode 100644
index 000000000..7f407dd13
--- /dev/null
+++ b/libc/unistd/getlogin.c
@@ -0,0 +1,48 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * getlogin for uClibc
+ *
+ * Copyright (C) 2001 by Lineo, inc. Written by
+ * Erik Andersen * <andersen@lineo.com>, <andersee@debian.org>
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+/* uClibc makes it policy to not mess with the utmp file whenever possible, *
+ * since I consider utmp a complete wasts of time. Since getlogin() should
+ * never be used for security purposes, we kindly let the user specify whatever
+ * they want via the LOGNAME environment variable, or we return NULL if
+ * getenv() fails to find anything */
+
+char * getlogin(void)
+{
+ return (getenv("LOGNAME"));
+}
+
+int getlogin_r(char *name, size_t len)
+{
+ char * foo = getenv("LOGNAME");
+
+ if (! foo)
+ return -1;
+
+ strncpy(name, foo, len);
+ return 0;
+}
+