Do more testing for the EA/CAP removal on write bug.

Do more testing for the EA/CAP removal on write bug.

093

@@ -65,6 +65,11 @@ _testfilter()
     sed -e "s#$testdir#TESTDIR#g"
 }
 
+_filefilter()
+{
+    sed -e "s#$tmp##" -e "s#$file#file#"
+}
+
 # real QA test starts here
 _supported_fs xfs udf
 _supported_os IRIX
@@ -105,13 +110,67 @@ $tmp.append
 echo "ls -P on file"
 ls -P $file | _testfilter
 
+echo "cat file"
+echo "----"
+cat $file
+echo "----"
+
 echo "append to file as user without caps"
 # in particular user doesn't have FSETID or SETFCAP
 $runas -u $uid $tmp.append
 
+echo "cat file"
+echo "----"
+cat $file
+echo "----"
+
+echo "ls -P on file"
+ls -P $file | _testfilter
+
+# try again when it doesn't have the EA
+echo "append to file as user without caps a 2nd time"
+$runas -u $uid $tmp.append
+
 echo "ls -P on file"
 ls -P $file | _testfilter
 
+echo "cat file"
+echo "----"
+cat $file
+echo "----"
+
+echo "only let root write to file"
+chmod 700 $file
+chown root $file 
+
+echo "as non-root try to append to file"
+$runas -u $uid $tmp.append 2>&1 | _filefilter
+
+echo "restore perms on file"
+chmod 777 $file
+
+echo "set a root EA on file"
+attr -R -s test -V testval $file | _filefilter
+
+echo "list EA on file"
+attr -R -l $file | _filefilter
+
+echo "as non-root try to append to file"
+$runas -u $uid $tmp.append 2>&1 | _filefilter
+
+echo "list EA on file"
+attr -R -l $file | _filefilter
+
+chown $uid $file
+chmod ugo+w $testdir
+echo "as non-root call writemod"
+$runas -u $uid src/writemod $file 2>&1 | _filefilter
+
+echo "cat file"
+echo "----"
+cat $file
+echo "----"
+
 # success, all done
 status=0
 exit

src/Makefile

@@ -37,7 +37,7 @@ TARGETS = dirstress fill fill2 getpagesize holes lstat64 \
 	nametest permname randholes runas truncfile usemem \
 	mmapcat append_reader append_writer dirperf metaperf \
 	devzero feature alloc fault fstest t_access_root \
-	godown resvtest
+	godown resvtest writemod
 
 LINUX_TARGETS = loggen xfsctl bstat t_mtab
 

src/writemod.c

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * 
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like.  Any license provided herein, whether implied or
+ * otherwise, applies only to this software file.  Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ * 
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA  94043, or:
+ * 
+ * http://www.sgi.com 
+ * 
+ * For further information regarding this notice, see: 
+ * 
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+/*
+ * tests out if access checking is done on write path
+ * 1. opens with write perms
+ * 2. fchmod to turn off write perms
+ * 3. writes to file
+ */
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+int 
+main(int argc, char* argv[])
+{
+    char *path;
+    int fd;
+    char *buf = "hi there";
+    ssize_t x;
+    int sts;
+
+    if (argc != 2) {
+	fprintf(stderr, "%s: requires path argument\n", argv[0]);
+        return 1;
+    }
+
+    path = argv[1];
+
+    printf("open for write \"%s\" with 777\n", path);
+    fd = open(path, O_RDWR, 0777);
+    if (fd == -1) {
+	perror("open");
+        return 1;
+    }
+    printf("remove perms on file\n");
+    sts = fchmod(fd, 0);
+    if (sts == -1) {
+	perror("fchmod");
+        return 1;
+    }
+    printf("write to the file\n");
+    x = write(fd, buf, strlen(buf)+1); 
+    if (x == -1) {
+	perror("write");
+        return 1;
+    }
+    return 0;
+}