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      1 /*
      2  * Copyright (C) 2012 Red Hat, Inc.
      3  *
      4  * This program is free software; you can redistribute it and/or
      5  * modify it under the terms of version 2 of the GNU General Public
      6  * License as published by the Free Software Foundation.
      7  *
      8  * This program is distributed in the hope that it would be useful,
      9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     11  *
     12  * Further, this software is distributed without any warranty that it
     13  * is free of the rightful claim of any third person regarding
     14  * infringement or the like.  Any license provided herein, whether
     15  * implied or otherwise, applies only to this software file.  Patent
     16  * licenses, if any, provided herein do not apply to combinations of
     17  * this program with other software, or any other product whatsoever.
     18  *
     19  * You should have received a copy of the GNU General Public License
     20  * along with this program; if not, write the Free Software
     21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     22  * 02110-1301, USA.
     23  */
     24 
     25 /*
     26  * An empty buffer of size zero can be passed into getxattr(2) to return
     27  * the current size of the named extended attribute.
     28  */
     29 
     30 #include "config.h"
     31 #include <sys/types.h>
     32 #include <sys/stat.h>
     33 #include <sys/wait.h>
     34 #include <errno.h>
     35 #include <fcntl.h>
     36 #include <unistd.h>
     37 #include <signal.h>
     38 #include <stdio.h>
     39 #include <stdlib.h>
     40 #include <string.h>
     41 #ifdef HAVE_ATTR_XATTR_H
     42 #include <attr/xattr.h>
     43 #endif
     44 #include "test.h"
     45 
     46 char *TCID = "getxattr03";
     47 
     48 #ifdef HAVE_ATTR_XATTR_H
     49 #define XATTR_TEST_KEY "user.testkey"
     50 #define XATTR_TEST_VALUE "test value"
     51 #define XATTR_TEST_VALUE_SIZE (sizeof(XATTR_TEST_VALUE) - 1)
     52 #define TESTFILE "getxattr03testfile"
     53 
     54 static void setup(void);
     55 static void cleanup(void);
     56 
     57 int TST_TOTAL = 1;
     58 
     59 int main(int argc, char *argv[])
     60 {
     61 	int lc;
     62 
     63 	tst_parse_opts(argc, argv, NULL, NULL);
     64 
     65 	setup();
     66 
     67 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     68 		tst_count = 0;
     69 
     70 		TEST(getxattr(TESTFILE, XATTR_TEST_KEY, NULL, 0));
     71 
     72 		if (TEST_RETURN == XATTR_TEST_VALUE_SIZE)
     73 			tst_resm(TPASS, "getxattr(2) returned correct value");
     74 		else
     75 			tst_resm(TFAIL | TTERRNO, "getxattr(2) failed");
     76 	}
     77 
     78 	cleanup();
     79 	tst_exit();
     80 }
     81 
     82 static void setup(void)
     83 {
     84 	int fd;
     85 
     86 	tst_require_root();
     87 
     88 	tst_tmpdir();
     89 
     90 	/* Test for xattr support and set attr value */
     91 	fd = creat(TESTFILE, 0644);
     92 	if (fd == -1)
     93 		tst_brkm(TBROK | TERRNO, cleanup, "Create %s failed", TESTFILE);
     94 	close(fd);
     95 
     96 	if (setxattr(TESTFILE, XATTR_TEST_KEY, XATTR_TEST_VALUE,
     97 		     XATTR_TEST_VALUE_SIZE, XATTR_CREATE) == -1) {
     98 		if (errno == ENOTSUP)
     99 			tst_brkm(TCONF, cleanup, "No xattr support in fs or "
    100 				 "fs mounted without user_xattr option");
    101 		else
    102 			tst_brkm(TBROK | TERRNO, cleanup, "setxattr %s failed",
    103 				 TESTFILE);
    104 	}
    105 
    106 	TEST_PAUSE;
    107 }
    108 
    109 static void cleanup(void)
    110 {
    111 	tst_rmdir();
    112 }
    113 #else /* HAVE_ATTR_XATTR_H */
    114 int main(int argc, char *argv[])
    115 {
    116 	tst_brkm(TCONF, NULL, "<attr/xattr.h> does not exist.");
    117 }
    118 #endif
    119