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ipc/util.c: further variable name cleanups

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The varable names got a mess, thus standardize them again:

id: user space id. Called semid, shmid, msgid if the type is known.
    Most functions use "id" already.
idx: "index" for the idr lookup
    Right now, some functions use lid, ipc_addid() already uses idx as
    the variable name.
seq: sequence number, to avoid quick collisions of the user space id
key: user space key, used for the rhash tree

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Manfred Spraul <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Michael Kerrisk <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Manfred Spraul 2018-08-21 22:02:00 -07:00 • committed by Linus Torvalds
commit 27c331a174
6 changed files with 27 additions and 27 deletions
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6
ipc/sem.c
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@ -1294,7 +1294,7 @@ static int semctl_info(struct ipc_namespace *ns, int semid,
int cmd, void __user *p)
{
struct seminfo seminfo;
int max_id;
int max_idx;
int err;
err = security_sem_semctl(NULL, cmd);
@ -1318,11 +1318,11 @@ static int semctl_info(struct ipc_namespace *ns, int semid,
seminfo.semusz = SEMUSZ;
seminfo.semaem = SEMAEM;
}
max_id = ipc_get_maxid(&sem_ids(ns));
max_idx = ipc_get_maxidx(&sem_ids(ns));
up_read(&sem_ids(ns).rwsem);
if (copy_to_user(p, &seminfo, sizeof(struct seminfo)))
return -EFAULT;
return (max_id < 0) ? 0 : max_id;
return (max_idx < 0) ? 0 : max_idx;
}
static int semctl_setval(struct ipc_namespace *ns, int semid, int semnum,