Auto mount the temporary directory for testing:
1. auto mount can reduce bugs
2. add a option to change the default hugepages to be allocated

Signed-off-by: Wanlong Gao <[email protected]>
---
 runtest/hugetlb                                    |    2 +-
 testcases/kernel/mem/hugetlb/hugemmap/hugemmap04.c |   49 +++++++++++--------
 2 files changed, 29 insertions(+), 22 deletions(-)

diff --git a/runtest/hugetlb b/runtest/hugetlb
index 751636f..bde2a0b 100644
--- a/runtest/hugetlb
+++ b/runtest/hugetlb
@@ -1,7 +1,7 @@
 hugemmap01 hugemmap01
 hugemmap02 hugemmap02 -c10
 hugemmap03 hugemmap03 -I2 -c10
-hugemmap04 hugemmap04 -H/tmp
+hugemmap04 hugemmap04
 hugemmap05 hugemmap05
 hugemmap05_1 hugemmap05 -m
 hugemmap05_2 hugemmap05 -s
diff --git a/testcases/kernel/mem/hugetlb/hugemmap/hugemmap04.c 
b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap04.c
index c2d7def..2960f8b 100644
--- a/testcases/kernel/mem/hugetlb/hugemmap/hugemmap04.c
+++ b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap04.c
@@ -58,12 +58,14 @@
 #include <sys/stat.h>
 #include <sys/mman.h>
 #include <sys/types.h>
+#include <sys/mount.h>
 
 #include "test.h"
 #include "usctest.h"
 #include "system_specific_hugepages_info.h"
+#include "../../include/mem.h"
 
-static char *TEMPFILE = "mmapfile";
+static char TEMPFILE[MAXPATHLEN];
 
 char *TCID = "hugemmap04";
 int TST_TOTAL = 1;
@@ -74,10 +76,10 @@ static int freepages;
 static int beforetest;
 static int aftertest;
 static int hugepagesmapped;
+static long hugepages = 1024;
 static char *Hopt;
+static char *nr_opt;
 
-static void setup(void);
-static void cleanup(void);
 static void help(void);
 
 int main(int ac, char **av)
@@ -85,21 +87,26 @@ int main(int ac, char **av)
        int lc;
        char *msg;
        int Hflag = 0;
+       int sflag = 0;
        int huge_pagesize = 0;
 
        option_t options[] = {
-               { "H:",   &Hflag, &Hopt },
+               { "H:", &Hflag, &Hopt },
+               { "s:", &sflag, &nr_opt },
                { NULL, NULL, NULL }
        };
 
        msg = parse_opts(ac, av, options, &help);
-       if (msg != NULL)
+       if (msg)
                tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s,"
                         " use -help", msg);
 
-       if (!Hflag)
-               tst_brkm(TBROK, NULL, "-H option is REQUIRED for this test,"
-                        " use -h for options help");
+       if (!Hflag) {
+               tst_tmpdir();
+               Hopt = get_tst_tmpdir();
+       }
+       if (sflag)
+               hugepages = strtol(nr_opt, NULL, 10);
 
        /* Check number of hugepages */
        if (get_no_of_hugepages() <= 0 || hugepages_size() <= 0)
@@ -137,7 +144,7 @@ int main(int ac, char **av)
                            MAP_SHARED, fildes, 0);
                sleep(2);
                if (addr == MAP_FAILED) {
-                       tst_resm(TFAIL|TERRNO, "mmap() Failed on %s, TEMPFILE");
+                       tst_resm(TFAIL|TERRNO, "mmap() Failed on %s", TEMPFILE);
                        continue;
                } else {
                        tst_resm(TPASS, "Succeeded mapping file using %d pages",
@@ -169,26 +176,26 @@ int main(int ac, char **av)
        tst_exit();
 }
 
-static void setup(void)
+void setup(void)
 {
-       char mypid[40];
-
-       sprintf(mypid, "/%d", getpid());
-       TEMPFILE = strcat(mypid, TEMPFILE);
-       TEMPFILE = strcat(Hopt, TEMPFILE);
-
-       tst_sig(FORK, DEF_HANDLER, cleanup);
-
-       TEST_PAUSE;
-
+       tst_require_root(NULL);
+       if (mount("none", Hopt, "hugetlbfs", 0, NULL) < 0)
+               tst_brkm(TBROK|TERRNO, NULL,
+                        "mount failed on %s", Hopt);
+
+       set_sys_tune("nr_hugepages", hugepages, 1);
+       snprintf(TEMPFILE, sizeof(TEMPFILE), "%s/mmapfile%d",
+                Hopt, getpid());
 }
 
-static void cleanup(void)
+void cleanup(void)
 {
        TEST_CLEANUP;
 
        unlink(TEMPFILE);
 
+       umount(Hopt);
+       tst_rmdir();
 }
 
 static void help(void)
-- 
1.7.9


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