* [LTP] [PATCH] Added new_behavior flag to detect kernel version Kernel >= 6.11: Tests that creat() succeeds (write to executed file allowed)
@ 2026-04-08 5:33 lepillai
0 siblings, 0 replies; 3+ messages in thread
From: lepillai @ 2026-04-08 5:33 UTC (permalink / raw)
To: ltp; +Cc: lekshmi-cpillai
From: lekshmi-cpillai <lekshmi@ktes.isst.tadn.ibm.com>
---
testcases/kernel/syscalls/creat/creat07.c | 38 ++++++++++++++++-------
1 file changed, 27 insertions(+), 11 deletions(-)
diff --git a/testcases/kernel/syscalls/creat/creat07.c b/testcases/kernel/syscalls/creat/creat07.c
index c7b85ee69..762022301 100644
--- a/testcases/kernel/syscalls/creat/creat07.c
+++ b/testcases/kernel/syscalls/creat/creat07.c
@@ -19,6 +19,8 @@
#define TEST_APP "creat07_child"
+static int new_behavior;
+
static void verify_creat(void)
{
pid_t pid;
@@ -33,16 +35,26 @@ static void verify_creat(void)
TEST(creat(TEST_APP, O_WRONLY));
- if (TST_RET != -1) {
- tst_res(TFAIL, "creat() succeeded unexpectedly");
- return;
+ if (new_behavior) {
+ /* Kernel >= 6.11: write to executed file is allowed */
+ if (TST_RET != -1) {
+ SAFE_CLOSE(TST_RET);
+ tst_res(TPASS, "creat() succeeded as expected (new behavior)");
+ } else {
+ tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
+ }
+ } else {
+ /* Kernel < 6.11: write to executed file returns ETXTBSY */
+ if (TST_RET != -1) {
+ tst_res(TFAIL, "creat() succeeded unexpectedly");
+ SAFE_CLOSE(TST_RET);
+ } else if (TST_ERR == ETXTBSY) {
+ tst_res(TPASS, "creat() received ETXTBSY");
+ } else {
+ tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
+ }
}
- if (TST_ERR == ETXTBSY)
- tst_res(TPASS, "creat() received EXTBSY");
- else
- tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
-
SAFE_KILL(pid, SIGKILL);
SAFE_WAITPID(pid, NULL, 0);
}
@@ -50,9 +62,13 @@ static void verify_creat(void)
static void setup(void)
{
if ((tst_kvercmp(6, 11, 0)) >= 0) {
- tst_brk(TCONF, "Skipping test, write to executed file is "
- "allowed since 6.11-rc1.\n"
- "2a010c412853 (\"fs: don't block i_writecount during exec\")");
+ new_behavior = 1;
+ tst_res(TINFO, "Testing new behavior: write to executed file is "
+ "allowed since 6.11-rc1 (2a010c412853)");
+ } else {
+ new_behavior = 0;
+ tst_res(TINFO, "Testing old behavior: write to executed file "
+ "returns ETXTBSY");
}
}
--
2.39.1
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [LTP] [PATCH] Added new_behavior flag to detect kernel version Kernel >= 6.11: Tests that creat() succeeds (write to executed file allowed)
@ 2026-04-08 5:36 lepillai
2026-04-08 10:10 ` Cyril Hrubis
0 siblings, 1 reply; 3+ messages in thread
From: lepillai @ 2026-04-08 5:36 UTC (permalink / raw)
To: ltp; +Cc: lekshmi-cpillai
From: lekshmi-cpillai <lekshmi@ktes.isst.tadn.ibm.com>
Signed-off-by: lekshmi-cpillai <lepillai@linux.ibm.com>
---
testcases/kernel/syscalls/creat/creat07.c | 38 ++++++++++++++++-------
1 file changed, 27 insertions(+), 11 deletions(-)
diff --git a/testcases/kernel/syscalls/creat/creat07.c b/testcases/kernel/syscalls/creat/creat07.c
index c7b85ee69..762022301 100644
--- a/testcases/kernel/syscalls/creat/creat07.c
+++ b/testcases/kernel/syscalls/creat/creat07.c
@@ -19,6 +19,8 @@
#define TEST_APP "creat07_child"
+static int new_behavior;
+
static void verify_creat(void)
{
pid_t pid;
@@ -33,16 +35,26 @@ static void verify_creat(void)
TEST(creat(TEST_APP, O_WRONLY));
- if (TST_RET != -1) {
- tst_res(TFAIL, "creat() succeeded unexpectedly");
- return;
+ if (new_behavior) {
+ /* Kernel >= 6.11: write to executed file is allowed */
+ if (TST_RET != -1) {
+ SAFE_CLOSE(TST_RET);
+ tst_res(TPASS, "creat() succeeded as expected (new behavior)");
+ } else {
+ tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
+ }
+ } else {
+ /* Kernel < 6.11: write to executed file returns ETXTBSY */
+ if (TST_RET != -1) {
+ tst_res(TFAIL, "creat() succeeded unexpectedly");
+ SAFE_CLOSE(TST_RET);
+ } else if (TST_ERR == ETXTBSY) {
+ tst_res(TPASS, "creat() received ETXTBSY");
+ } else {
+ tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
+ }
}
- if (TST_ERR == ETXTBSY)
- tst_res(TPASS, "creat() received EXTBSY");
- else
- tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
-
SAFE_KILL(pid, SIGKILL);
SAFE_WAITPID(pid, NULL, 0);
}
@@ -50,9 +62,13 @@ static void verify_creat(void)
static void setup(void)
{
if ((tst_kvercmp(6, 11, 0)) >= 0) {
- tst_brk(TCONF, "Skipping test, write to executed file is "
- "allowed since 6.11-rc1.\n"
- "2a010c412853 (\"fs: don't block i_writecount during exec\")");
+ new_behavior = 1;
+ tst_res(TINFO, "Testing new behavior: write to executed file is "
+ "allowed since 6.11-rc1 (2a010c412853)");
+ } else {
+ new_behavior = 0;
+ tst_res(TINFO, "Testing old behavior: write to executed file "
+ "returns ETXTBSY");
}
}
--
2.39.1
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [LTP] [PATCH] Added new_behavior flag to detect kernel version Kernel >= 6.11: Tests that creat() succeeds (write to executed file allowed)
2026-04-08 5:36 [LTP] [PATCH] Added new_behavior flag to detect kernel version Kernel >= 6.11: Tests that creat() succeeds (write to executed file allowed) lepillai
@ 2026-04-08 10:10 ` Cyril Hrubis
0 siblings, 0 replies; 3+ messages in thread
From: Cyril Hrubis @ 2026-04-08 10:10 UTC (permalink / raw)
To: lepillai; +Cc: lekshmi-cpillai, ltp
Hi!
> +static int new_behavior;
> +
> static void verify_creat(void)
> {
> pid_t pid;
> @@ -33,16 +35,26 @@ static void verify_creat(void)
>
> TEST(creat(TEST_APP, O_WRONLY));
>
> - if (TST_RET != -1) {
> - tst_res(TFAIL, "creat() succeeded unexpectedly");
> - return;
> + if (new_behavior) {
> + /* Kernel >= 6.11: write to executed file is allowed */
> + if (TST_RET != -1) {
> + SAFE_CLOSE(TST_RET);
> + tst_res(TPASS, "creat() succeeded as expected (new behavior)");
> + } else {
> + tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
> + }
> + } else {
> + /* Kernel < 6.11: write to executed file returns ETXTBSY */
> + if (TST_RET != -1) {
> + tst_res(TFAIL, "creat() succeeded unexpectedly");
> + SAFE_CLOSE(TST_RET);
> + } else if (TST_ERR == ETXTBSY) {
> + tst_res(TPASS, "creat() received ETXTBSY");
> + } else {
> + tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
> + }
> }
>
> - if (TST_ERR == ETXTBSY)
> - tst_res(TPASS, "creat() received EXTBSY");
> - else
> - tst_res(TFAIL | TTERRNO, "creat() failed unexpectedly");
> -
> SAFE_KILL(pid, SIGKILL);
> SAFE_WAITPID(pid, NULL, 0);
> }
> @@ -50,9 +62,13 @@ static void verify_creat(void)
> static void setup(void)
> {
> if ((tst_kvercmp(6, 11, 0)) >= 0) {
> - tst_brk(TCONF, "Skipping test, write to executed file is "
> - "allowed since 6.11-rc1.\n"
> - "2a010c412853 (\"fs: don't block i_writecount during exec\")");
> + new_behavior = 1;
> + tst_res(TINFO, "Testing new behavior: write to executed file is "
> + "allowed since 6.11-rc1 (2a010c412853)");
> + } else {
> + new_behavior = 0;
> + tst_res(TINFO, "Testing old behavior: write to executed file "
> + "returns ETXTBSY");
Apart from the code being ugly and having way too much verbose messages
the test is likely broken with -i 2 command line option on newer
kernels.
--
Cyril Hrubis
chrubis@suse.cz
--
Mailing list info: https://lists.linux.it/listinfo/ltp
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2026-04-08 5:36 [LTP] [PATCH] Added new_behavior flag to detect kernel version Kernel >= 6.11: Tests that creat() succeeds (write to executed file allowed) lepillai
2026-04-08 10:10 ` Cyril Hrubis
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