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authorAn-Cheng Huang <ancheng@vyatta.com>2007-11-12 13:06:02 -0800
committerAn-Cheng Huang <ancheng@vyatta.com>2007-11-12 13:06:02 -0800
commitb7fc9e0f6d6105ba2203f219743d4b269415e84b (patch)
treeef6586dfc62798c2b17487b443864699aca55f31 /examples/loadables/logname.c
downloadvyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.tar.gz
vyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.zip
initial import from bash_3.1dfsg.orig.tar.gz
Diffstat (limited to 'examples/loadables/logname.c')
-rw-r--r--examples/loadables/logname.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/examples/loadables/logname.c b/examples/loadables/logname.c
new file mode 100644
index 0000000..00cfd19
--- /dev/null
+++ b/examples/loadables/logname.c
@@ -0,0 +1,52 @@
+/* logname - print login name of current user */
+
+#include <config.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "builtins.h"
+#include "shell.h"
+
+#if !defined (errno)
+extern int errno;
+#endif
+
+logname_builtin (list)
+ WORD_LIST *list;
+{
+ char *np;
+
+ if (no_options (list))
+ return (EX_USAGE);
+
+ np = getlogin ();
+ if (np == 0)
+ {
+ builtin_error ("cannot find username: %s", strerror (errno));
+ return (EXECUTION_FAILURE);
+ }
+ printf ("%s\n", np);
+ return (EXECUTION_SUCCESS);
+}
+
+char *logname_doc[] = {
+ "write the current user's login name to the standard output",
+ "and exit. logname ignores the LOGNAME and USER variables.",
+ "logname ignores any non-option arguments.",
+ (char *)NULL
+};
+
+struct builtin logname_struct = {
+ "logname",
+ logname_builtin,
+ BUILTIN_ENABLED,
+ logname_doc,
+ "logname",
+ 0
+};
+