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[PATCH 1/3] pam_namespace: Move includes and data structures to header



From: David Quigley <dpquigl tycho nsa gov>

This patch moves the large chunch of includes and data structure definitions
into pam_namespace.h and updates Makefile.am to reflect this.

Signed-Off-By: David Quigley <dpquigl tycho nsa gov>
---

 Makefile.am     |    2 
 pam_namespace.c |  104 -------------------------------------------
 pam_namespace.h |  135 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 137 insertions(+), 104 deletions(-)

diff -uprN -X dontdiff pam_namespace_orig/Makefile.am pam_namespace_header/Makefile.am
--- pam_namespace_orig/Makefile.am	2006-07-24 12:35:59.000000000 -0400
+++ pam_namespace_header/Makefile.am	2006-07-24 12:43:12.000000000 -0400
@@ -32,7 +32,7 @@ endif
 
 if HAVE_UNSHARE
 securelib_LTLIBRARIES = pam_namespace.la
-pam_namespace_la_SOURCES = pam_namespace.c md5.c md5.h
+pam_namespace_la_SOURCES = pam_namespace.c pam_namespace.h md5.c md5.h
 
 secureconf_DATA = namespace.conf
 secureconf_SCRIPTS = namespace.init
diff -uprN -X dontdiff pam_namespace_orig/pam_namespace.c pam_namespace_header/pam_namespace.c
--- pam_namespace_orig/pam_namespace.c	2006-07-24 12:35:59.000000000 -0400
+++ pam_namespace_header/pam_namespace.c	2006-07-24 12:40:13.000000000 -0400
@@ -30,109 +30,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
-#if !(defined(linux))
-#error THIS CODE IS KNOWN TO WORK ONLY ON LINUX !!!
-#endif
-
-#include "config.h"
-
-#include <stdio.h>
-#include <stdio_ext.h>
-#include <unistd.h>
-#include <string.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <syslog.h>
-#include <dlfcn.h>
-#include <stdarg.h>
-#include <pwd.h>
-#include <limits.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/resource.h>
-#include <sys/mount.h>
-#include <sys/wait.h>
-#include <libgen.h>
-#include <fcntl.h>
-#include <sched.h>
-#include "security/pam_modules.h"
-#include "security/pam_modutil.h"
-#include "security/pam_ext.h"
-#include "md5.h"
-
-#ifdef WITH_SELINUX
-#include <selinux/selinux.h>
-#endif
-
-#ifndef CLONE_NEWNS
-#define CLONE_NEWNS 0x00020000 /* Flag to create new namespace */
-#endif
-
-/*
- * Module defines
- */
-#ifndef PAM_NAMESPACE_CONFIG
-#define PAM_NAMESPACE_CONFIG "/etc/security/namespace.conf"
-#endif
-
-#ifndef NAMESPACE_INIT_SCRIPT
-#define NAMESPACE_INIT_SCRIPT "/etc/security/namespace.init"
-#endif
-
-#define PAMNS_DEBUG           0x00000100 /* Running in debug mode */
-#define PAMNS_SELINUX_ENABLED 0x00000400 /* SELinux is enabled */
-#define PAMNS_CTXT_BASED_INST 0x00000800 /* Context based instance needed */
-#define PAMNS_GEN_HASH        0x00002000 /* Generate md5 hash for inst names */
-#define PAMNS_IGN_CONFIG_ERR  0x00004000 /* Ignore format error in conf file */
-#define PAMNS_IGN_INST_PARENT_MODE  0x00008000 /* Ignore instance parent mode */
-
-/*
- * Polyinstantiation method options, based on user, security context
- * or both
- */
-enum polymethod {
-    USER,
-    CONTEXT,
-    BOTH,
-};
-
-/*
- * Depending on the application using this namespace module, we
- * may need to unmount priviously bind mounted instance directory.
- * Applications such as login and sshd, that establish a new 
- * session unmount of instance directory is not needed. For applications
- * such as su and newrole, that switch the identity, this module 
- * has to unmount previous instance directory first and re-mount
- * based on the new indentity. For other trusted applications that
- * just want to undo polyinstantiation, only unmount of previous
- * instance directory is needed.
- */
-enum unmnt_op {
-    NO_UNMNT,
-    UNMNT_REMNT,
-    UNMNT_ONLY,
-};
-
-/*
- * Structure that holds information about a directory to polyinstantiate
- */
-struct polydir_s {
-    char dir[PATH_MAX];    	       	/* directory to polyinstantiate */
-    char instance_prefix[PATH_MAX];	/* prefix for instance dir path name */
-    enum polymethod method;		/* method used to polyinstantiate */
-    unsigned int num_uids;		/* number of override uids */
-    uid_t *uid;				/* list of override uids */
-    struct polydir_s *next;		/* pointer to the next polydir entry */
-};
-
-struct instance_data {
-    pam_handle_t *pamh;		/* The pam handle for this instance */
-    struct polydir_s *polydirs_ptr; /* The linked list pointer */
-    char user[LOGIN_NAME_MAX];	/* User name */
-    uid_t uid;			/* The uid of the user */
-    unsigned long flags;		/* Flags for debug, selinux etc */
-};
+#include "pam_namespace.h"
 
 /*
  * Adds an entry for a polyinstantiated directory to the linked list of
diff -uprN -X dontdiff pam_namespace_orig/pam_namespace.h pam_namespace_header/pam_namespace.h
--- pam_namespace_orig/pam_namespace.h	1969-12-31 19:00:00.000000000 -0500
+++ pam_namespace_header/pam_namespace.h	2006-07-24 12:40:18.000000000 -0400
@@ -0,0 +1,135 @@
+/******************************************************************************
+ * A module for Linux-PAM that will set the default namespace after 
+ * establishing a session via PAM.
+ *
+ * (C) Copyright IBM Corporation 2005
+ * (C) Copyright Red Hat 2006
+ * All Rights Reserved.
+ *
+ * Written by: Janak Desai <janak us ibm com>
+ * With Revisions by: Steve Grubb <sgrubb redhat com>
+ * Derived from a namespace setup patch by Chad Sellers <cdselle tycho nsa gov>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#if !(defined(linux))
+#error THIS CODE IS KNOWN TO WORK ONLY ON LINUX !!!
+#endif
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <syslog.h>
+#include <dlfcn.h>
+#include <stdarg.h>
+#include <pwd.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/resource.h>
+#include <sys/mount.h>
+#include <sys/wait.h>
+#include <libgen.h>
+#include <fcntl.h>
+#include <sched.h>
+#include "security/pam_modules.h"
+#include "security/pam_modutil.h"
+#include "security/pam_ext.h"
+#include "md5.h"
+
+#ifdef WITH_SELINUX
+#include <selinux/selinux.h>
+#endif
+
+#ifndef CLONE_NEWNS
+#define CLONE_NEWNS 0x00020000 /* Flag to create new namespace */
+#endif
+
+/*
+ * Module defines
+ */
+#ifndef PAM_NAMESPACE_CONFIG
+#define PAM_NAMESPACE_CONFIG "/etc/security/namespace.conf"
+#endif
+
+#ifndef NAMESPACE_INIT_SCRIPT
+#define NAMESPACE_INIT_SCRIPT "/etc/security/namespace.init"
+#endif
+
+#define PAMNS_DEBUG           0x00000100 /* Running in debug mode */
+#define PAMNS_SELINUX_ENABLED 0x00000400 /* SELinux is enabled */
+#define PAMNS_CTXT_BASED_INST 0x00000800 /* Context based instance needed */
+#define PAMNS_GEN_HASH        0x00002000 /* Generate md5 hash for inst names */
+#define PAMNS_IGN_CONFIG_ERR  0x00004000 /* Ignore format error in conf file */
+#define PAMNS_IGN_INST_PARENT_MODE  0x00008000 /* Ignore instance parent mode */
+
+/*
+ * Polyinstantiation method options, based on user, security context
+ * or both
+ */
+enum polymethod {
+    USER,
+    CONTEXT,
+    BOTH,
+};
+
+/*
+ * Depending on the application using this namespace module, we
+ * may need to unmount priviously bind mounted instance directory.
+ * Applications such as login and sshd, that establish a new 
+ * session unmount of instance directory is not needed. For applications
+ * such as su and newrole, that switch the identity, this module 
+ * has to unmount previous instance directory first and re-mount
+ * based on the new indentity. For other trusted applications that
+ * just want to undo polyinstantiation, only unmount of previous
+ * instance directory is needed.
+ */
+enum unmnt_op {
+    NO_UNMNT,
+    UNMNT_REMNT,
+    UNMNT_ONLY,
+};
+
+/*
+ * Structure that holds information about a directory to polyinstantiate
+ */
+struct polydir_s {
+    char dir[PATH_MAX];    	       	/* directory to polyinstantiate */
+    char instance_prefix[PATH_MAX];	/* prefix for instance dir path name */
+    enum polymethod method;		/* method used to polyinstantiate */
+    unsigned int num_uids;		/* number of override uids */
+    uid_t *uid;				/* list of override uids */
+    struct polydir_s *next;		/* pointer to the next polydir entry */
+};
+
+struct instance_data {
+    pam_handle_t *pamh;		/* The pam handle for this instance */
+    struct polydir_s *polydirs_ptr; /* The linked list pointer */
+    char user[LOGIN_NAME_MAX];	/* User name */
+    uid_t uid;			/* The uid of the user */
+    unsigned long flags;		/* Flags for debug, selinux etc */
+};


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