[LTP] [PATCH v1] semctl: use IPC_PRIVATE to minimize interference.

[Stephen Bertram]

This update solves previous issues when tests were
run in parallel with multiple workers in tmt.

Signed-off-by: Stephen Bertram <sbertram@redhat.com>
---
 testcases/kernel/syscalls/ipc/semctl/semctl03.c | 5 +----
 testcases/kernel/syscalls/ipc/semctl/semctl05.c | 6 +-----
 testcases/kernel/syscalls/ipc/semctl/semctl07.c | 3 +--
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/testcases/kernel/syscalls/ipc/semctl/semctl03.c b/testcases/kernel/syscalls/ipc/semctl/semctl03.c
index 5a11b95ef..dc11d0823 100644
--- a/testcases/kernel/syscalls/ipc/semctl/semctl03.c
+++ b/testcases/kernel/syscalls/ipc/semctl/semctl03.c
@@ -84,14 +84,11 @@ static void verify_semctl(unsigned int n)
 
 static void setup(void)
 {
-	static key_t semkey;
 	struct test_variants *tv = &variants[tst_variant];
 
 	tst_res(TINFO, "Testing variant: %s", tv->desc);
 
-	semkey = GETIPCKEY();
-
-	sem_id = SAFE_SEMGET(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
+	sem_id = SAFE_SEMGET(IPC_PRIVATE, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
 
 	bad_ptr = tst_get_bad_addr(NULL);
 }
diff --git a/testcases/kernel/syscalls/ipc/semctl/semctl05.c b/testcases/kernel/syscalls/ipc/semctl/semctl05.c
index 985c1f039..f1ab69f59 100644
--- a/testcases/kernel/syscalls/ipc/semctl/semctl05.c
+++ b/testcases/kernel/syscalls/ipc/semctl/semctl05.c
@@ -45,11 +45,7 @@ static void verify_semctl(unsigned int n)
 
 static void setup(void)
 {
-	static key_t semkey;
-
-	semkey = GETIPCKEY();
-
-	sem_id = SAFE_SEMGET(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
+	sem_id = SAFE_SEMGET(IPC_PRIVATE, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
 }
 
 static void cleanup(void)
diff --git a/testcases/kernel/syscalls/ipc/semctl/semctl07.c b/testcases/kernel/syscalls/ipc/semctl/semctl07.c
index 1b03f0ab2..a0b5f4928 100644
--- a/testcases/kernel/syscalls/ipc/semctl/semctl07.c
+++ b/testcases/kernel/syscalls/ipc/semctl/semctl07.c
@@ -130,10 +130,9 @@ static void verify_semctl(void)
 
 static void setup(void)
 {
-	key_t key = GETIPCKEY();
 	nsems = 1;
 
-	semid = SAFE_SEMGET(key, nsems, SEM_RA | IPC_CREAT);
+	semid = SAFE_SEMGET(IPC_PRIVATE, nsems, SEM_RA | IPC_CREAT);
 }
 
 static void cleanup(void)
-- 
2.53.0