patch/patch-selinux.patch

diff -up patch-2.7.6/src/common.h.selinux patch-2.7.6/src/common.h
--- patch-2.7.6/src/common.h.selinux	2018-02-03 12:41:49.000000000 +0000
+++ patch-2.7.6/src/common.h	2018-02-12 12:29:44.415225377 +0000
@@ -30,6 +30,8 @@
 #include <sys/types.h>
 #include <time.h>
 
+#include <selinux/selinux.h>
+
 #include <sys/stat.h>
 
 #include <limits.h>
@@ -84,6 +86,7 @@ XTERN char *outfile;
 XTERN int inerrno;
 XTERN int invc;
 XTERN struct stat instat;
+XTERN security_context_t incontext;
 XTERN bool dry_run;
 XTERN bool posixly_correct;
 
diff -up patch-2.7.6/src/inp.c.selinux patch-2.7.6/src/inp.c
--- patch-2.7.6/src/inp.c.selinux	2017-09-04 12:34:16.000000000 +0100
+++ patch-2.7.6/src/inp.c	2018-02-12 12:29:44.415225377 +0000
@@ -145,7 +145,7 @@ get_input_file (char const *filename, ch
     char *getbuf;
 
     if (inerrno == -1)
-      inerrno = stat_file (filename, &instat);
+	inerrno = stat_file (filename, &instat, &incontext);
 
     /* Perhaps look for RCS or SCCS versions.  */
     if (S_ISREG (file_type)
@@ -190,7 +190,7 @@ get_input_file (char const *filename, ch
 	    }
 
 	    if (cs && version_get (filename, cs, ! inerrno, elsewhere, getbuf,
-				   &instat))
+				   &instat, &incontext))
 	      inerrno = 0;
 
 	    free (getbuf);
@@ -201,6 +201,7 @@ get_input_file (char const *filename, ch
       {
 	instat.st_mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
 	instat.st_size = 0;
+	incontext = NULL;
       }
     else if (! ((S_ISREG (file_type) || S_ISLNK (file_type))
 	        && (file_type & S_IFMT) == (instat.st_mode & S_IFMT)))
diff -up patch-2.7.6/src/Makefile.am.selinux patch-2.7.6/src/Makefile.am
--- patch-2.7.6/src/Makefile.am.selinux	2017-09-04 12:34:16.000000000 +0100
+++ patch-2.7.6/src/Makefile.am	2018-02-12 12:29:44.415225377 +0000
@@ -37,7 +37,7 @@ patch_SOURCES = \
 
 AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib
 patch_LDADD = $(LDADD) $(top_builddir)/lib/libpatch.a $(LIB_CLOCK_GETTIME) \
-	      $(LIB_XATTR) $(LIB_EACCESS)
+	      $(LIB_XATTR) $(LIB_EACCESS) -lselinux
 
 if ENABLE_MERGE
   patch_SOURCES += merge.c
diff -up patch-2.7.6/src/Makefile.in.selinux patch-2.7.6/src/Makefile.in
--- patch-2.7.6/src/Makefile.in.selinux	2018-02-03 13:33:56.000000000 +0000
+++ patch-2.7.6/src/Makefile.in	2018-02-12 12:29:44.415225377 +0000
@@ -1147,7 +1147,7 @@ patch_SOURCES = bestmatch.h common.h inp
 AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib \
 	$(am__append_2)
 patch_LDADD = $(LDADD) $(top_builddir)/lib/libpatch.a $(LIB_CLOCK_GETTIME) \
-	      $(LIB_XATTR) $(LIB_EACCESS)
+	      $(LIB_XATTR) $(LIB_EACCESS) -lselinux
 
 all: all-am
 
diff -up patch-2.7.6/src/patch.c.selinux patch-2.7.6/src/patch.c
--- patch-2.7.6/src/patch.c.selinux	2018-02-03 12:41:49.000000000 +0000
+++ patch-2.7.6/src/patch.c	2018-02-12 12:30:27.315164138 +0000
@@ -269,19 +269,19 @@ main (int argc, char **argv)
 	  if (! strcmp (inname, outname))
 	    {
 	      if (inerrno == -1)
-		inerrno = stat_file (inname, &instat);
+		inerrno = stat_file (inname, &instat, NULL);
 	      outstat = instat;
 	      outerrno = inerrno;
 	    }
 	  else
-	    outerrno = stat_file (outname, &outstat);
+	    outerrno = stat_file (outname, &outstat, NULL);
 
 	  if (! outerrno)
 	    {
 	      if (has_queued_output (&outstat))
 		{
 		  output_files (&outstat);
-		  outerrno = stat_file (outname, &outstat);
+		  outerrno = stat_file (outname, &outstat, NULL);
 		  inerrno = -1;
 		}
 	      if (! outerrno)
@@ -598,7 +598,7 @@ main (int argc, char **argv)
 			}
 		      else
 			{
-			  attr |= FA_IDS | FA_MODE | FA_XATTRS;
+			  attr |= FA_IDS | FA_MODE | FA_XATTRS | FA_SECCONTEXT;
 			  set_file_attributes (TMPOUTNAME, attr, inname, &instat,
 					       mode, &new_time);
 			}
@@ -658,7 +658,7 @@ main (int argc, char **argv)
 			struct stat oldst;
 			int olderrno;
 
-			olderrno = stat_file (rej, &oldst);
+			olderrno = stat_file (rej, &oldst, NULL);
 			if (olderrno && olderrno != ENOENT)
 			  write_fatal ();
 		        if (! olderrno && lookup_file_id (&oldst) == CREATED)
@@ -1790,7 +1790,7 @@ delete_file_later (const char *name, con
 
   if (! st)
     {
-      if (stat_file (name, &st_tmp) != 0)
+      if (stat_file (name, &st_tmp, NULL) != 0)
 	pfatal ("Can't get file attributes of %s %s", "file", name);
       st = &st_tmp;
     }
diff -up patch-2.7.6/src/pch.c.selinux patch-2.7.6/src/pch.c
--- patch-2.7.6/src/pch.c.selinux	2018-02-03 12:41:49.000000000 +0000
+++ patch-2.7.6/src/pch.c	2018-02-12 12:29:44.416225375 +0000
@@ -1,6 +1,6 @@
 /* reading patches */
 
-/* Copyright (C) 1986, 1987, 1988 Larry Wall
+/* Copyright (C) 1986, 1987, 1988, 2012 Larry Wall
 
    Copyright (C) 1990-1993, 1997-2003, 2006, 2009-2012 Free Software
    Foundation, Inc.
@@ -296,7 +296,7 @@ there_is_another_patch (bool need_header
 	if (t > buf + 1 && *(t - 1) == '\n')
 	  {
 	    inname = xmemdup0 (buf, t - buf - 1);
-	    inerrno = stat_file (inname, &instat);
+	    inerrno = stat_file (inname, &instat, &incontext);
 	    if (inerrno)
 	      {
 		perror (inname);
@@ -433,6 +433,7 @@ intuit_diff_type (bool need_header, mode
     bool extended_headers = false;
     enum nametype i;
     struct stat st[3];
+    security_context_t con[3];
     int stat_errno[3];
     int version_controlled[3];
     enum diff retval;
@@ -473,6 +474,7 @@ intuit_diff_type (bool need_header, mode
     version_controlled[OLD] = -1;
     version_controlled[NEW] = -1;
     version_controlled[INDEX] = -1;
+    con[OLD] = con[NEW] = con[INDEX] = NULL;
     p_rfc934_nesting = 0;
     p_timestamp[OLD].tv_sec = p_timestamp[NEW].tv_sec = -1;
     p_says_nonexistent[OLD] = p_says_nonexistent[NEW] = 0;
@@ -883,7 +885,7 @@ intuit_diff_type (bool need_header, mode
 		}
 	      else
 		{
-		  stat_errno[i] = stat_file (p_name[i], &st[i]);
+		  stat_errno[i] = stat_file (p_name[i], &st[i], &con[i]);
 		  if (! stat_errno[i])
 		    {
 		      if (lookup_file_id (&st[i]) == DELETE_LATER)
@@ -922,7 +924,7 @@ intuit_diff_type (bool need_header, mode
 			  if (cs)
 			    {
 			      if (version_get (p_name[i], cs, false, readonly,
-					       getbuf, &st[i]))
+					       getbuf, &st[i], &con[i]))
 				stat_errno[i] = 0;
 			      else
 				version_controlled[i] = 0;
@@ -985,7 +987,7 @@ intuit_diff_type (bool need_header, mode
       {
 	if (inname)
 	  {
-	    inerrno = stat_file (inname, &instat);
+	    inerrno = stat_file (inname, &instat, &incontext);
 	    if (inerrno || (instat.st_mode & S_IFMT) == file_type)
 	      maybe_reverse (inname, inerrno, inerrno || instat.st_size == 0);
 	  }
@@ -998,8 +1000,14 @@ intuit_diff_type (bool need_header, mode
 	inerrno = stat_errno[i];
 	invc = version_controlled[i];
 	instat = st[i];
+	incontext = con[i];
+	con[i] = NULL;
       }
 
+    for (i = OLD; i <= INDEX; i++)
+      if (con[i])
+	freecon (con[i]);
+
     return retval;
 }
 
diff -up patch-2.7.6/src/util.c.selinux patch-2.7.6/src/util.c
--- patch-2.7.6/src/util.c.selinux	2018-02-03 12:41:49.000000000 +0000
+++ patch-2.7.6/src/util.c	2018-02-12 12:29:44.417225374 +0000
@@ -300,6 +300,23 @@ set_file_attributes (char const *to, enu
 		S_ISLNK (mode) ? "symbolic link" : "file",
 		quotearg (to));
     }
+  if (attr & FA_SECCONTEXT)
+    {
+      security_context_t outcontext;
+      if (incontext && getfilecon (to, &outcontext) != -1 && outcontext)
+	{
+	  if (strcmp (outcontext, incontext) &&
+	      setfilecon (to, incontext) != 0)
+	    {
+	      freecon (outcontext);
+	      if (errno != ENOTSUP && errno != EPERM)
+		pfatal ("Can't set security context on file %s",
+			quotearg (to));
+	    }
+	  else
+	    freecon (outcontext);
+	}
+    }
 }
 
 static void
@@ -446,7 +463,7 @@ move_file (char const *from, bool *from_
   struct stat to_st;
   int to_errno;
 
-  to_errno = stat_file (to, &to_st);
+  to_errno = stat_file (to, &to_st, NULL);
   if (backup)
     create_backup (to, to_errno ? NULL : &to_st, false);
   if (! to_errno)
@@ -818,7 +835,8 @@ version_controller (char const *filename
    Return true if successful.  */
 bool
 version_get (char const *filename, char const *cs, bool exists, bool readonly,
-	     char const *getbuf, struct stat *filestat)
+	     char const *getbuf, struct stat *filestat,
+	     security_context_t *filecontext)
 {
   if (patch_get < 0)
     {
@@ -843,6 +861,13 @@ version_get (char const *filename, char
 	fatal ("Can't get file %s from %s", quotearg (filename), cs);
       if (safe_stat (filename, filestat) != 0)
 	pfatal ("%s", quotearg (filename));
+      if (filecontext && getfilecon (filename, filecontext) == -1)
+	{
+	  if (errno == ENODATA || errno == ENOTSUP)
+	    *filecontext = NULL;
+	  else
+	    pfatal ("%s", quotearg (filename));
+	}
     }
 
   return 1;
@@ -1670,12 +1695,28 @@ make_tempfile (char const **name, char l
   return fd;
 }
 
-int stat_file (char const *filename, struct stat *st)
+int stat_file (char const *filename, struct stat *st, security_context_t *con)
 {
   int (*xstat)(char const *, struct stat *) =
     follow_symlinks ? safe_stat : safe_lstat;
+  int (*xgetfilecon)(char const *, security_context_t *) =
+    follow_symlinks ? getfilecon : lgetfilecon;
+
+  if (xstat (filename, st) == 0)
+    {
+      if (con)
+	{
+	  if (xgetfilecon (filename, con) != -1 ||
+	      errno == ENODATA || errno == ENOTSUP)
+	    return 0;
 
-  return xstat (filename, st) == 0 ? 0 : errno;
+	  *con = NULL;
+	}
+      else
+	return 0;
+    }
+ 
+  return errno;
 }
 
 /* Check if a filename is relative and free of ".." components.
diff -up patch-2.7.6/src/util.h.selinux patch-2.7.6/src/util.h
--- patch-2.7.6/src/util.h.selinux	2018-02-03 12:41:49.000000000 +0000
+++ patch-2.7.6/src/util.h	2018-02-12 12:30:08.533190949 +0000
@@ -44,7 +44,7 @@ char *parse_name (char const *, int, cha
 char *savebuf (char const *, size_t);
 char *savestr (char const *);
 char const *version_controller (char const *, bool, struct stat const *, char **, char **);
-bool version_get (char const *, char const *, bool, bool, char const *, struct stat *);
+bool version_get (char const *, char const *, bool, bool, char const *, struct stat *, security_context_t *);
 int create_file (char const *, int, mode_t, bool);
 int systemic (char const *);
 char *format_linenum (char[LINENUM_LENGTH_BOUND + 1], lin);
@@ -67,7 +67,7 @@ void insert_file_id (struct stat const *
 enum file_id_type lookup_file_id (struct stat const *);
 void set_queued_output (struct stat const *, bool);
 bool has_queued_output (struct stat const *);
-int stat_file (char const *, struct stat *);
+int stat_file (char const *, struct stat *, security_context_t *);
 bool filename_is_safe (char const *) _GL_ATTRIBUTE_PURE;
 bool cwd_is_root (char const *);
 
@@ -75,7 +75,8 @@ enum file_attributes {
   FA_TIMES = 1,
   FA_IDS = 2,
   FA_MODE = 4,
-  FA_XATTRS = 8
+  FA_XATTRS = 8,
+  FA_SECCONTEXT = 16
 };
 
 void set_file_attributes (char const *, enum file_attributes, char const *,