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Re: [LTP] [PATCH 2/2] shmctl/shmctl01.c: Test features IPC_INFO, SHM_STAT, SHM_LOCK and SHM_UNLOCK.
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From: DAN LI <li...@cn...> - 2013-05-24 05:21:18
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On 05/23/2013 09:01 PM, Jan Stancek wrote:
>
>
> ----- Original Message -----
>> From: "DAN LI" <li...@cn...>
>> To: "LTP list" <ltp...@li...>
>> Sent: Thursday, 23 May, 2013 10:39:28 AM
>> Subject: [LTP] [PATCH 2/2] shmctl/shmctl01.c: Test features IPC_INFO, SHM_STAT, SHM_LOCK and SHM_UNLOCK.
>>
>>
>> Additional tests for features IPC_INFO, SHM_STAT, SHM_LOCK and SHM_UNLOCK.
>>
>>
>> Signed-off-by: DAN LI <li...@cn...>
>
> Hi,
>
> 1/2 cleanup looks OK to me, comments for 2/2 are inline.
>
>> ---
>> testcases/kernel/syscalls/ipc/shmctl/shmctl01.c | 83
>> ++++++++++++++++++++++---
>> 1 file changed, 75 insertions(+), 8 deletions(-)
>>
>> diff --git a/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c
>> b/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c
>> index 34ff30c..c0f2c81 100644
>> --- a/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c
>> +++ b/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c
>> @@ -43,13 +43,18 @@
>> * call cleanup
>> */
>>
>> +#ifndef _GNU_SOURCE
>> +#define _GNU_SOURCE
>> +#endif
>> #include "ipcshm.h"
>> #include "libtestsuite.h"
>>
>> char *TCID = "shmctl01";
>>
>> static int shm_id_1 = -1;
>> +static int shm_index;
>> static struct shmid_ds buf;
>> +static struct shminfo info;
>> static long save_time;
>>
>> #define FIRST 0
>> @@ -64,12 +69,24 @@ static pid_t pid_arr[N_ATTACH];
>> static int sync_pipes[2];
>>
>> /* Setup, cleanup and check routines for IPC_STAT */
>> -static void stat_setup(void), func_stat(void);
>> +static void stat_setup(void), func_istat(void);
>> static void stat_cleanup(void);
>>
>> /* Setup and check routines for IPC_SET */
>> static void set_setup(void), func_set(void);
>>
>> +/* Check routine for IPC_INFO */
>> +static void func_info(void);
>> +
>> +/* Check routine for SHM_STAT */
>> +static void func_sstat(void);
>> +
>> +/* Check routine for SHM_LOCK */
>> +static void func_lock(void);
>> +
>> +/* Check routine for SHM_UNLOCK */
>> +static void func_unlock(void);
>> +
>> /* Check routine for IPC_RMID */
>> static void func_rmid(void);
>>
>> @@ -77,21 +94,27 @@ static void func_rmid(void);
>> static void do_child(void);
>>
>> static struct test_case_t {
>> + int *shmid;
>> int cmd;
>> + struct shmid_ds *arg;
>> void (*func_test) ();
>> void (*func_setup) ();
>> } TC[] = {
>> - {IPC_STAT, func_stat, stat_setup},
>> + {&shm_id_1, IPC_STAT, &buf, func_istat, stat_setup},
>> #ifndef UCLINUX
>> /*
>> * The second test is not applicable to uClinux;
>> * shared memory segments are detached on exec(),
>> * so cannot be passed to uClinux children.
>> */
>> - {IPC_STAT, func_stat, stat_setup},
>> + {&shm_id_1, IPC_STAT, &buf, func_istat, stat_setup},
>> #endif
>> - {IPC_SET, func_set, set_setup},
>> - {IPC_RMID, func_rmid, NULL},
>> + {&shm_id_1, IPC_SET, &buf, func_set, set_setup},
>> + {&shm_id_1, IPC_INFO, (struct shmid_ds *) &info, func_info, NULL},
>> + {&shm_index, SHM_STAT, &buf, func_sstat, NULL},
>> + {&shm_id_1, SHM_LOCK, &buf, func_lock, NULL},
>> + {&shm_id_1, SHM_UNLOCK, &buf, func_unlock, NULL},
>> + {&shm_id_1, IPC_RMID, &buf, func_rmid, NULL},
>> };
>
> Are last 3 cases actually using buf?
Actually, not used...
Passing NULL to shmctl is just ok.
>
>>
>> static int TST_TOTAL = ARRAY_SIZE(TC);
>> @@ -146,7 +169,7 @@ int main(int argc, char *argv[])
>> if (TC[i].func_setup != NULL)
>> (*TC[i].func_setup) ();
>>
>> - TEST(shmctl(shm_id_1, TC[i].cmd, &buf));
>> + TEST(shmctl(*(TC[i].shmid), TC[i].cmd, TC[i].arg));
>>
>> if (TEST_RETURN == -1) {
>> tst_resm(TFAIL, "%s call failed - errno "
>> @@ -294,11 +317,11 @@ void do_child(void)
>> }
>>
>> /*
>> - * func_stat() - check the functionality of the IPC_STAT command with
>> shmctl()
>> + * func_istat() - check the functionality of the IPC_STAT command with
>> shmctl()
>> * by looking at the pid of the creator, the segement size,
>> * the number of attaches and the mode.
>> */
>> -void func_stat(void)
>> +void func_istat(void)
>> {
>> int fail = 0;
>> pid_t pid;
>> @@ -419,6 +442,50 @@ void func_set(void)
>> tst_resm(TPASS, "new mode and change time are correct");
>> }
>>
>> +
>> +static void func_info(void)
>> +{
>> + if (info.shmmin != 1)
>> + tst_resm(TFAIL, "value of shmmin is incorrect");
>> + else
>> + tst_resm(TPASS, "get correct shared memory limits");
>> +}
>> +
>> +static void func_sstat(void)
>> +{
>> + if (buf.shm_segsz != SHM_SIZE)
>
> I think this will work only if there are no shared memory segments before
> test starts. Because shm_index == 0, this will check first one:
You are right.
I will get the functionality test of SHM_STAT to check if shmctl returns correct
shared memory id.
>
> # ipcs -m
> ------ Shared Memory Segments --------
> key shmid owner perms bytes nattch status
> 0xffffffff 134971392 root 600 4 0
>
> # ./shmctl01
> shmctl01 1 TPASS : pid, size, # of attaches and mode are correct - pass #1
> shmctl01 2 TPASS : pid, size, # of attaches and mode are correct - pass #2
> shmctl01 3 TPASS : new mode and change time are correct
> shmctl01 4 TPASS : get correct shared memory limits
> shmctl01 5 TFAIL : segment size is incorrect
> shmctl01 6 TPASS : SHM_LOCK is setted
> shmctl01 7 TPASS : SHM_LOCK is cleared
> shmctl01 8 TPASS : shared memory appears to be removed
>
>> + tst_resm(TFAIL, "segment size is incorrect");
>> + else
>> + tst_resm(TPASS, "size of attache is correct");
>> +}
>> +
>> +static void func_lock(void)
>> +{
>> + if (shmctl(shm_id_1, IPC_STAT, &buf) == -1) {
>> + tst_resm(TBROK, "stat failed in func_lock()");
>> + return;
>> + }
>> +
>> + if (buf.shm_perm.mode & SHM_LOCKED)
>> + tst_resm(TPASS, "SHM_LOCK is setted");
>
> Just "set", I suggest: SHM_LOCKED flag is set/cleared
>
Ok.
Thank you for reviewing. :)
Regards,
DAN LI
> Regards,
> Jan
>
>> + else
>> + tst_resm(TFAIL, "SHM_LOCK is not setted");
>> +}
>> +
>> +static void func_unlock(void)
>> +{
>> + if (shmctl(shm_id_1, IPC_STAT, &buf) == -1) {
>> + tst_resm(TBROK, "stat failed in func_unlock()");
>> + return;
>> + }
>> +
>> + if (buf.shm_perm.mode & SHM_LOCKED)
>> + tst_resm(TFAIL, "SHM_LOCK is not cleared");
>> + else
>> + tst_resm(TPASS, "SHM_LOCK is cleared");
>> +}
>> +
>> +
>> /*
>> * func_rmid() - check the functionality of the IPC_RMID command with
>> shmctl()
>> */
>> --
>> 1.8.1
>>
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>
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