----- Original Message -----
> From: "Shuang Qiu" <shuang....@oracle.com>
> To: ltp-list@lists.sourceforge.net
> Cc: "Jan Stancek" <jstan...@redhat.com>
> Sent: Wednesday, 14 January, 2015 10:15:20 AM
> Subject: Re: [LTP] [PATCH] truncate03: impose max file size limit for EFBIG
> test
>
> Hello,
> I find that EFBIG test will fail over nfs filesystem because
> unexpectedly succeed too.
> It can catch SIGXFSZ signal but will not fail with EFBIG after blocked
> SIGXFSZ.
> I'm not sure if it is expected behavior for truncate against nfs filesystem.
> Could anyone help to check?
I'm guessing a bug. write(2) on nfs respects RLIMIT_FSIZE, but truncate(2) does
not.
I think best would be to check with some nfs people: linux-...@vger.kernel.org
Regards,
Jan
>
> Thanks
> Shuang
> On 08/20/2014 05:42 PM, Jan Stancek wrote:
> > Using LLONG_MAX as maximum can fail on XFS, because here the maximum
> > file size is 2^63-1, so this test may unexpectedly succeed.
> >
> > Impose limit via setrlimit(RLIMIT_FSIZE,..) and set value used
> > in EFBIG test to be twice that much.
> >
> > Signed-off-by: Jan Stancek <jstan...@redhat.com>
> > ---
> > testcases/kernel/syscalls/truncate/truncate03.c | 18 +++++++++++++++++-
> > 1 files changed, 17 insertions(+), 1 deletions(-)
> >
> > diff --git a/testcases/kernel/syscalls/truncate/truncate03.c
> > b/testcases/kernel/syscalls/truncate/truncate03.c
> > index ed5073d..54b7d3c 100644
> > --- a/testcases/kernel/syscalls/truncate/truncate03.c
> > +++ b/testcases/kernel/syscalls/truncate/truncate03.c
> > @@ -50,6 +50,7 @@
> > #include <string.h>
> > #include <signal.h>
> > #include <pwd.h>
> > +#include <sys/resource.h>
> >
> > #include "test.h"
> > #include "usctest.h"
> > @@ -65,6 +66,7 @@
> > #define NEW_MODE S_IRUSR | S_IRGRP | S_IROTH
> > #define DIR_MODE S_IRWXU
> > #define TRUNC_LEN 256
> > +#define MAX_FSIZE (16*1024*1024)
> >
> > static char long_pathname[PATH_MAX + 2];
> >
> > @@ -82,7 +84,7 @@ static struct test_case_t {
> > { long_pathname, TRUNC_LEN, ENAMETOOLONG },
> > { "", TRUNC_LEN, ENOENT },
> > { TEST_DIR1, TRUNC_LEN, EISDIR },
> > - { TEST_FILE3, LLONG_MAX, EFBIG },
> > + { TEST_FILE3, MAX_FSIZE*2, EFBIG },
> > { TEST_SYM1, TRUNC_LEN, ELOOP }
> > };
> >
> > @@ -124,6 +126,8 @@ void setup(void)
> > {
> > struct passwd *ltpuser;
> > char *bad_addr;
> > + struct rlimit rlim;
> > + sigset_t sigset;
> >
> > tst_sig(NOFORK, DEF_HANDLER, cleanup);
> >
> > @@ -156,6 +160,18 @@ void setup(void)
> >
> > SAFE_SYMLINK(cleanup, TEST_SYM1, TEST_SYM2);
> > SAFE_SYMLINK(cleanup, TEST_SYM2, TEST_SYM1);
> > +
> > + rlim.rlim_cur = MAX_FSIZE;
> > + rlim.rlim_max = MAX_FSIZE;
> > + TEST(setrlimit(RLIMIT_FSIZE, &rlim));
> > + if (TEST_RETURN != 0)
> > + tst_brkm(TBROK | TTERRNO, cleanup, "setrlimit");
> > +
> > + sigemptyset(&sigset);
> > + sigaddset(&sigset, SIGXFSZ);
> > + TEST(sigprocmask(SIG_BLOCK, &sigset, NULL));
> > + if (TEST_RETURN != 0)
> > + tst_brkm(TBROK | TTERRNO, cleanup, "sigprocmask");
> > }
> >
> > void truncate_verify(struct test_case_t *tc)
>
>
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