Hi,
What is the difference in the two sequence numbers....
struct ipc_ids {
int size;
int in_use;
int max_id;
unsigned short seq; <--------- ??
unsigned short seq_max;
struct semaphore sem;
spinlock_t ary;
struct ipc_id* entries;
};
struct shmid_kernel
{
struct kern_ipc_perm shm_perm; -------
struct file * shm_file; |
int id; |
unsigned long shm_nattch; |
unsigned long shm_segsz; |
time_t shm_atim; |
time_t shm_dtim; |
time_t shm_ctim; |
pid_t shm_cprid; |
pid_t shm_lprid; |
}; |
|
|
--------------------------------------------------------
|
struct kern_ipc_perm
{
key_t key;
uid_t uid;
gid_t gid;
uid_t cuid;
gid_t cgid;
mode_t mode;
unsigned long seq; <-------------- ??
};
Also, what is teh purpose of the sequence number at all??? The latter is
used in ipc_buildid() .. but we didnt get the exact purpose of its existence
Thanks in advance,
MAASK group
(Maya, Anu, Asmita , Snehal & Krushna)
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