Hi: When I run ltp testcases (the latest version, JUNE 2012 STABLE :ltp-full-20120614),I find tow testcases are broken( mount2 and mount3 in " testcases/kernel/syscalls/mount" directory):
# ./mount02 -D /dev/loop2 -T ext3
mount02 1 TPASS : mount got expected failure: errno=ENODEV(19): No such
device
mount02 2 TPASS : mount got expected failure: errno=ENOTBLK(15): Block
device required
mount02 3 TPASS : mount got expected failure: errno=EBUSY(16): Device or
resource busy
mount02 4 TBROK : umount of mnt_18620 failed: errno=EBUSY(16): Device or
resource busy
mount02 5 TBROK : Remaining cases broken
mount02 0 TWARN : tst_rmdir: rmobj(/tmp/mouSyPao1) failed:
remove(/tmp/mouSyPao1/mnt_18620) failed; errno=16: Device or resource busy
# ./mount03 -D /dev/loop2 -T ext3
mount03 1 TBROK : stat for setuid_test failed
mount03 2 TBROK : Remaining cases broken
In mount02.c, the global array variable exp_enos is defined as :
static int exp_enos[] = { ENODEV, ENOTBLK, EBUSY, EINVAL, EFAULT,
ENAMETOOLONG, ENOENT, ENOTDIR, 0};
There are egiht items in the exp_enos, but the value of TST_TOTAL is 13, it
means there are 13 checkpoints int the testcase. As a result ,in the
setup_test function , there are 13 switch-cases ( case 0、case1 ... case 12)
But the number of the expect result in the exp_enos array is mismatch with the
number of checkpoint, so the TBROK happend.
In mount03.c, there are three issues:
1、In setup function, the setuid_test file is in the testhome_path instead of
the temporary directory Path_name. It results "stat for setuid_test failed"
2、In setup function, snprintf(Path_name, PATH_MAX, "%s/%s/", Path_name,
mntpoint)， it can not implement appending the mntpoint string to the Path_name
string;
3、In test_rwflag function, in the part of "case 2"(at line 280 in mount03.c),
if the "execlp(file, basename(file), NULL)" will return (actually it will
return),
the return value of test_rwflag is always 1 (1 means fail),so the testcase
is always failed; Another hand, if it will not return (if kernel bug exists),
the process
will terminate unexpectedly.
I fix them in the patch (See the attachment), and both of the tow testcase can
get pass. Pls check the patch attachmented.
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fix_mount2_mount3_bug.patch
Description: fix_mount2_mount3_bug.patch
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