* Re: [LTP] [PATCH V3] readlink03: fix return value for the syscall readlink() [not found] ` <1331783585-18980-1-git-send-email-gaowanlong@cn.fujitsu.com> @ 2012-03-15 4:01 ` Caspar Zhang 2012-03-15 4:25 ` Wanlong Gao [not found] ` <1331785975-20452-1-git-send-email-gaowanlong@cn.fujitsu.com> 0 siblings, 2 replies; 4+ messages in thread From: Caspar Zhang @ 2012-03-15 4:01 UTC (permalink / raw) To: Wanlong Gao; +Cc: LTP list Hi, On 03/15/2012 11:53 AM, Wanlong Gao wrote: > Since commit http://git.kernel.org/linus/65cfc672 > which added O_PATH support to the *at() calls, the error return for readlink/readlinkat > for the empty pathname has switched from ENOENT to EINVAL. And this patch merged to linux v2.6.39, > So LTP commit https://github.com/linux-test-project/ltp/commit/0cc7514 > fix this with the kernel version v2.6.39 compared. > > But recently, commit http://git.kernel.org/linus/1fa1e7f6 > which ensure we return ENOENT for the empty pathname for normal lookups. > > Now, the patch whitch switch the return value back again is already queued for > 3.0 and 3.1 stable release. > > So, if the return value is EINVAL for empty pathname, it may be a kernel bug, so we > needn't to check the kernel version but return the "kernel bug" INFO to LTP the users. Hmmm, picky advice: wrapper the line <= 73 character in commit message. > > Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> > Acked-by: Jan Stancek <jstancek@redhat.com> > --- [snip] > + if ((strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) && > + TEST_ERRNO == EINVAL) > + tst_resm(TWARN, "It may be a Kernel Bug, see the patch:\n" picky advice #2: I think without this \n we can still get a good-looking warning message. > + "http://git.kernel.org/linus/1fa1e7f6\n"); I guess \n in this line should be removed. How do you think? Thanks, Caspar ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [LTP] [PATCH V3] readlink03: fix return value for the syscall readlink() 2012-03-15 4:01 ` [LTP] [PATCH V3] readlink03: fix return value for the syscall readlink() Caspar Zhang @ 2012-03-15 4:25 ` Wanlong Gao [not found] ` <1331785975-20452-1-git-send-email-gaowanlong@cn.fujitsu.com> 1 sibling, 0 replies; 4+ messages in thread From: Wanlong Gao @ 2012-03-15 4:25 UTC (permalink / raw) To: Caspar Zhang; +Cc: LTP list On 03/15/2012 12:01 PM, Caspar Zhang wrote: > Hi, > > On 03/15/2012 11:53 AM, Wanlong Gao wrote: >> Since commit http://git.kernel.org/linus/65cfc672 >> which added O_PATH support to the *at() calls, the error return for readlink/readlinkat >> for the empty pathname has switched from ENOENT to EINVAL. And this patch merged to linux v2.6.39, >> So LTP commit https://github.com/linux-test-project/ltp/commit/0cc7514 >> fix this with the kernel version v2.6.39 compared. >> >> But recently, commit http://git.kernel.org/linus/1fa1e7f6 >> which ensure we return ENOENT for the empty pathname for normal lookups. >> >> Now, the patch whitch switch the return value back again is already queued for >> 3.0 and 3.1 stable release. >> >> So, if the return value is EINVAL for empty pathname, it may be a kernel bug, so we >> needn't to check the kernel version but return the "kernel bug" INFO to LTP the users. > > Hmmm, picky advice: wrapper the line <= 73 character in commit message. OK. > >> >> Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> >> Acked-by: Jan Stancek <jstancek@redhat.com> >> --- > > [snip] > >> + if ((strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) && >> + TEST_ERRNO == EINVAL) >> + tst_resm(TWARN, "It may be a Kernel Bug, see the patch:\n" > > picky advice #2: I think without this \n we can still get a good-looking > warning message. > >> + "http://git.kernel.org/linus/1fa1e7f6\n"); > > I guess \n in this line should be removed. Sure, I was brain-dead. Thanks, Wanlong Gao > > How do you think? > > Thanks, > Caspar > ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <1331785975-20452-1-git-send-email-gaowanlong@cn.fujitsu.com>]
* Re: [LTP] [PATCH V4] readlink03: fix return value for the syscall readlink() [not found] ` <1331785975-20452-1-git-send-email-gaowanlong@cn.fujitsu.com> @ 2012-03-15 5:22 ` Caspar Zhang 2012-03-15 5:40 ` Wanlong Gao 0 siblings, 1 reply; 4+ messages in thread From: Caspar Zhang @ 2012-03-15 5:22 UTC (permalink / raw) To: Wanlong Gao; +Cc: ltp-list, jburke On 03/15/2012 12:32 PM, Wanlong Gao wrote: > Since commit http://git.kernel.org/linus/65cfc672 > which added O_PATH support to the *at() calls, > the error return for readlink/readlinkat > for the empty pathname has switched from > ENOENT to EINVAL. And this patch merged to linux v2.6.39, > So LTP commit https://github.com/linux-test-project/ltp/commit/0cc7514 > fix this with the kernel version v2.6.39 compared. > > But recently, commit http://git.kernel.org/linus/1fa1e7f6 > which ensure we return ENOENT for the empty pathname > for normal lookups. > > Now, the patch whitch switch the return value back again > is already queued for 3.0 and 3.1 stable release. > > So, if the return value is EINVAL for empty pathname, > it may be a kernel bug, so we needn't to check the kernel > version but return the "kernel bug" warning to LTP the users. > > Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> > Acked-by: Jan Stancek <jstancek@redhat.com> Acked-by: Caspar Zhang <caspar@casparzhang.com> > --- > testcases/kernel/syscalls/readlink/readlink03.c | 9 ++++----- > 1 file changed, 4 insertions(+), 5 deletions(-) > > diff --git a/testcases/kernel/syscalls/readlink/readlink03.c b/testcases/kernel/syscalls/readlink/readlink03.c > index 370bf7d..5ae8513 100644 > --- a/testcases/kernel/syscalls/readlink/readlink03.c > +++ b/testcases/kernel/syscalls/readlink/readlink03.c > @@ -173,11 +173,6 @@ int main(int ac, char **av) > buf_size = sizeof(buffer); > } > > - if (strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) { > - if ((tst_kvercmp(2, 6, 39)) >= 0) > - Test_cases[i].exp_errno = EINVAL; > - } > - > /* > * Call readlink(2) to test different test conditions. > * verify that it fails with -1 return value and sets > @@ -204,6 +199,10 @@ int main(int ac, char **av) > "errno=%d, expected errno=%d", > test_desc, TEST_ERRNO, > Test_cases[i].exp_errno); > + if ((strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) && > + TEST_ERRNO == EINVAL) > + tst_resm(TWARN, "It may be a Kernel Bug, see the patch:" > + "http://git.kernel.org/linus/1fa1e7f6"); > } > } > } ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [LTP] [PATCH V4] readlink03: fix return value for the syscall readlink() 2012-03-15 5:22 ` [LTP] [PATCH V4] " Caspar Zhang @ 2012-03-15 5:40 ` Wanlong Gao 0 siblings, 0 replies; 4+ messages in thread From: Wanlong Gao @ 2012-03-15 5:40 UTC (permalink / raw) To: Caspar Zhang; +Cc: ltp-list, jburke On 03/15/2012 01:22 PM, Caspar Zhang wrote: > On 03/15/2012 12:32 PM, Wanlong Gao wrote: >> Since commit http://git.kernel.org/linus/65cfc672 >> which added O_PATH support to the *at() calls, >> the error return for readlink/readlinkat >> for the empty pathname has switched from >> ENOENT to EINVAL. And this patch merged to linux v2.6.39, >> So LTP commit https://github.com/linux-test-project/ltp/commit/0cc7514 >> fix this with the kernel version v2.6.39 compared. >> >> But recently, commit http://git.kernel.org/linus/1fa1e7f6 >> which ensure we return ENOENT for the empty pathname >> for normal lookups. >> >> Now, the patch whitch switch the return value back again >> is already queued for 3.0 and 3.1 stable release. >> >> So, if the return value is EINVAL for empty pathname, >> it may be a kernel bug, so we needn't to check the kernel >> version but return the "kernel bug" warning to LTP the users. >> >> Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> >> Acked-by: Jan Stancek <jstancek@redhat.com> > > Acked-by: Caspar Zhang <caspar@casparzhang.com> pushed, thanks for your review Caspar. Regards, Wanlong Gao > >> --- >> testcases/kernel/syscalls/readlink/readlink03.c | 9 ++++----- >> 1 file changed, 4 insertions(+), 5 deletions(-) >> >> diff --git a/testcases/kernel/syscalls/readlink/readlink03.c b/testcases/kernel/syscalls/readlink/readlink03.c >> index 370bf7d..5ae8513 100644 >> --- a/testcases/kernel/syscalls/readlink/readlink03.c >> +++ b/testcases/kernel/syscalls/readlink/readlink03.c >> @@ -173,11 +173,6 @@ int main(int ac, char **av) >> buf_size = sizeof(buffer); >> } >> >> - if (strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) { >> - if ((tst_kvercmp(2, 6, 39)) >= 0) >> - Test_cases[i].exp_errno = EINVAL; >> - } >> - >> /* >> * Call readlink(2) to test different test conditions. >> * verify that it fails with -1 return value and sets >> @@ -204,6 +199,10 @@ int main(int ac, char **av) >> "errno=%d, expected errno=%d", >> test_desc, TEST_ERRNO, >> Test_cases[i].exp_errno); >> + if ((strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) && >> + TEST_ERRNO == EINVAL) >> + tst_resm(TWARN, "It may be a Kernel Bug, see the patch:" >> + "http://git.kernel.org/linus/1fa1e7f6"); >> } >> } >> } > > ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list ^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <4F61650D.2060308@casparzhang.com>
[not found] ` <1331783585-18980-1-git-send-email-gaowanlong@cn.fujitsu.com>
2012-03-15 4:01 ` [LTP] [PATCH V3] readlink03: fix return value for the syscall readlink() Caspar Zhang
2012-03-15 4:25 ` Wanlong Gao
[not found] ` <1331785975-20452-1-git-send-email-gaowanlong@cn.fujitsu.com>
2012-03-15 5:22 ` [LTP] [PATCH V4] " Caspar Zhang
2012-03-15 5:40 ` Wanlong Gao
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