misc: utmpx based logging support

misc: Added support for accessing user accounting database based
on utmpx structure.

Signed-off-by: Salvatore Cro <salvatore.cro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/include/utmpx.h b/include/utmpx.h
new file mode 100644
index 000000000..8622916a9
--- /dev/null
+++ b/include/utmpx.h
@@ -0,0 +1,127 @@
+/* Copyright (C) 1997, 1998, 1999, 2003 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef	_UTMPX_H
+#define	_UTMPX_H	1
+
+#include <features.h>
+#include <sys/time.h>
+
+/* Required according to Unix98.  */
+#ifndef __pid_t_defined
+typedef __pid_t pid_t;
+# define __pid_t_defined
+#endif
+
+/* Get system dependent values and data structures.  */
+#include <bits/utmpx.h>
+
+#ifdef __USE_GNU
+/* Compatibility names for the strings of the canonical file names.  */
+# define UTMPX_FILE	_PATH_UTMPX
+# define UTMPX_FILENAME	_PATH_UTMPX
+# define WTMPX_FILE	_PATH_WTMPX
+# define WTMPX_FILENAME	_PATH_WTMPX
+#endif
+
+/* For the getutmp{,x} functions we need the `struct utmp'.  */
+#ifdef __USE_GNU
+struct utmp;
+#endif
+
+
+__BEGIN_DECLS
+
+/* Open user accounting database.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern void setutxent (void);
+
+/* Close user accounting database.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern void endutxent (void);
+
+/* Get the next entry from the user accounting database.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct utmpx *getutxent (void);
+
+/* Get the user accounting database entry corresponding to ID.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct utmpx *getutxid (__const struct utmpx *__id);
+
+/* Get the user accounting database entry corresponding to LINE.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct utmpx *getutxline (__const struct utmpx *__line);
+
+/* Write the entry UTMPX into the user accounting database.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct utmpx *pututxline (__const struct utmpx *__utmpx);
+
+
+#ifdef __USE_GNU
+/* Change name of the utmpx file to be examined.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern int utmpxname (__const char *__file);
+
+/* Append entry UTMP to the wtmpx-like file WTMPX_FILE.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern void updwtmpx (__const char *__wtmpx_file,
+		      __const struct utmpx *__utmpx);
+
+
+/* Copy the information in UTMPX to UTMP.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern void getutmp (__const struct utmpx *__utmpx,
+		     struct utmp *__utmp);
+
+/* Copy the information in UTMP to UTMPX.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern void getutmpx (__const struct utmp *__utmp,
+		      struct utmpx *__utmpx);
+#endif
+
+__END_DECLS
+
+#endif /* utmpx.h  */