On 05/04/13 20:27, Simone Piccardi wrote:
> Hi,
>
> in the semctl(2) man page (2012-05-31 version) I found a definitions of
> semid_ds with:
>
> ...
> unsigned short sem_nsems; /* No. of semaphores in set */
> ...
>
> but that's defined as:
>
> unsigned long int sem_nsems; /* number of semaphores in set */
>
> in /usr/include/bits/sem.h (at least in my debian)
>
> I also found it defined as:
>
> int sem_nsems; /* no. of semaphores in array */
>
>
> in /usr/src/linux-3.7.6/include/linux/sem.h
Thanks Simone. You're right. I applied the patch below.
Cheers,
Michael
diff --git a/man2/semctl.2 b/man2/semctl.2
index d1bc542..c9124d7 100644
--- a/man2/semctl.2
+++ b/man2/semctl.2
@@ -88,7 +88,7 @@ struct semid_ds {
struct ipc_perm sem_perm; /* Ownership and permissions */
time_t sem_otime; /* Last semop time */
time_t sem_ctime; /* Last change time */
- unsigned short sem_nsems; /* No. of semaphores in set */
+ unsigned long sem_nsems; /* No. of semaphores in set */
};
.in
.fi
@@ -462,6 +462,17 @@ or greater than the implementation limit
.SH CONFORMING TO
SVr4, POSIX.1-2001.
.\" SVr4 documents more error conditions EINVAL and EOVERFLOW.
+
+POSIX.1-2001 specifies the
+.I sem_nsems
+field of the
+.I semid_ds
+structure as having the type
+.IR "unsigned\ short" ,
+and the field is so defined on most other systems.
+It was also so defined on Linux 2.2 and earlier,
+but, since Linux 2.4, the field has the type
+.IR "unsigned\ long" .
.SH NOTES
The inclusion of
.I <sys/types.h>
--
To unsubscribe from this list: send the line "unsubscribe linux-man" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
