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-rw-r--r--examples/loadables/uname.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/examples/loadables/uname.c b/examples/loadables/uname.c
new file mode 100644
index 0000000..106a1c8
--- /dev/null
+++ b/examples/loadables/uname.c
@@ -0,0 +1,162 @@
+/*
+ * uname - print system information
+ *
+ * usage: uname [-amnrsv]
+ *
+ */
+
+/*
+ Copyright (C) 1999-2009 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash.
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+#include <stdio.h>
+
+#include "bashtypes.h"
+
+#if defined (HAVE_UNAME)
+# include <sys/utsname.h>
+#else
+struct utsname {
+ char sysname[32];
+ char nodename[32];
+ char release[32];
+ char version[32];
+ char machine[32];
+};
+#endif
+
+#include <errno.h>
+
+#include "builtins.h"
+#include "shell.h"
+#include "bashgetopt.h"
+#include "common.h"
+
+#define FLAG_SYSNAME 0x01 /* -s */
+#define FLAG_NODENAME 0x02 /* -n */
+#define FLAG_RELEASE 0x04 /* -r */
+#define FLAG_VERSION 0x08 /* -v */
+#define FLAG_MACHINE 0x10 /* -m, -p */
+
+#define FLAG_ALL 0x1f
+
+#ifndef errno
+extern int errno;
+#endif
+
+static void uprint();
+
+static int uname_flags;
+
+int
+uname_builtin (list)
+ WORD_LIST *list;
+{
+ int opt, r;
+ struct utsname uninfo;
+
+ uname_flags = 0;
+ reset_internal_getopt ();
+ while ((opt = internal_getopt (list, "amnprsv")) != -1)
+ {
+ switch (opt)
+ {
+ case 'a':
+ uname_flags |= FLAG_ALL;
+ break;
+ case 'm':
+ case 'p':
+ uname_flags |= FLAG_MACHINE;
+ break;
+ case 'n':
+ uname_flags |= FLAG_NODENAME;
+ break;
+ case 'r':
+ uname_flags |= FLAG_RELEASE;
+ break;
+ case 's':
+ uname_flags |= FLAG_SYSNAME;
+ break;
+ case 'v':
+ uname_flags |= FLAG_VERSION;
+ break;
+ CASE_HELPOPT;
+ default:
+ builtin_usage ();
+ return (EX_USAGE);
+ }
+ }
+ list = loptend;
+
+ if (list)
+ {
+ builtin_usage ();
+ return (EX_USAGE);
+ }
+
+ if (uname_flags == 0)
+ uname_flags = FLAG_SYSNAME;
+
+ /* Only ancient systems will not have uname(2). */
+#ifdef HAVE_UNAME
+ if (uname (&uninfo) < 0)
+ {
+ builtin_error ("cannot get system name: %s", strerror (errno));
+ return (EXECUTION_FAILURE);
+ }
+#else
+ builtin_error ("cannot get system information: uname(2) not available");
+ return (EXECUTION_FAILURE);
+#endif
+
+ uprint (FLAG_SYSNAME, uninfo.sysname);
+ uprint (FLAG_NODENAME, uninfo.nodename);
+ uprint (FLAG_RELEASE, uninfo.release);
+ uprint (FLAG_VERSION, uninfo.version);
+ uprint (FLAG_MACHINE, uninfo.machine);
+
+ return (EXECUTION_SUCCESS);
+}
+
+static void
+uprint (flag, info)
+ int flag;
+ char *info;
+{
+ if (uname_flags & flag)
+ {
+ uname_flags &= ~flag;
+ printf ("%s%c", info, uname_flags ? ' ' : '\n');
+ }
+}
+
+char *uname_doc[] = {
+ "Display system information.",
+ "",
+ "Display information about the system hardware and OS.",
+ (char *)NULL
+};
+
+struct builtin uname_struct = {
+ "uname",
+ uname_builtin,
+ BUILTIN_ENABLED,
+ uname_doc,
+ "uname [-amnrsv]",
+ 0
+};