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o Turn on MPSAFE flag for mqueuefs.

Browse source 
o Reuse si_mqd field in siginfo_t, this also gives userland
  information about which descriptor is notified.
This commit is contained in:
David Xu 2005-12-06 06:22:12 +00:00
parent 1a2d6e30c8
commit 9da8a32aae
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=153155
1 changed files with 3 additions and 4 deletions
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7
sys/kern/uipc_mqueue.c
View file

@ -154,7 +154,6 @@ struct mqueue_notifier {
struct sigevent nt_sigev;
ksiginfo_t nt_ksi;
struct proc *nt_proc;
int nt_fd;
};
struct mqueue {
@ -548,7 +547,7 @@ mqfs_mount(struct mount *mp, struct thread *td)
mp->mnt_data = &mqfs_data;
mp->mnt_flag |= MNT_LOCAL;
/* mp->mnt_kern_flag |= MNTK_MPSAFE; */
mp->mnt_kern_flag |= MNTK_MPSAFE;
vfs_getnewfsid(mp);
sbp = &mp->mnt_stat;
@ -1840,7 +1839,7 @@ notifier_search(struct proc *p, int fd)
struct mqueue_notifier *nt;
LIST_FOREACH(nt, &p->p_mqnotifier, nt_link) {
if (nt->nt_fd == fd)
if (nt->nt_ksi.ksi_mqd == fd)
break;
}
return (nt);
@ -2218,7 +2217,7 @@ mq_notify(struct thread *td, struct mq_notify_args *uap)
nt->nt_ksi.ksi_flags |= KSI_INS | KSI_EXT;
nt->nt_ksi.ksi_code = SI_MESGQ;
nt->nt_proc = p;
nt->nt_fd = uap->mqd;
nt->nt_ksi.ksi_mqd = uap->mqd;
notifier_insert(p, nt);
}
nt->nt_sigev = ev;