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linux_ntsync(9): check the file type before calling native ntsync(9)

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Reported by:	Alex S <iwtcex@gmail.com>
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
This commit is contained in:
Konstantin Belousov
2026-06-14 07:11:08 +03:00
parent 64467d2ec3
commit 59b0df3441
1 changed files with 36 additions and 0 deletions
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sys/dev/ntsync/linux_ntsync.c
+36
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@@ -231,6 +231,10 @@ linux_ntsync_ioctl(struct thread *td, struct linux_ioctl_args *args)
} }
break; break;
case LNTSYNC_IOC_SEM_RELEASE: case LNTSYNC_IOC_SEM_RELEASE:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = copyin(data, &val, sizeof(val)); error = copyin(data, &val, sizeof(val));
if (error == 0) { if (error == 0) {
error = ntsync_sem_release(td, fp, &val); error = ntsync_sem_release(td, fp, &val);
@@ -239,6 +243,10 @@ linux_ntsync_ioctl(struct thread *td, struct linux_ioctl_args *args)
} }
break; break;
case LNTSYNC_IOC_SEM_READ: case LNTSYNC_IOC_SEM_READ:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = ntsync_sem_read(td, fp, &sa); error = ntsync_sem_read(td, fp, &sa);
if (error == 0) { if (error == 0) {
ntsync_sa_to_lsa(&lsa, &sa); ntsync_sa_to_lsa(&lsa, &sa);
@@ -246,6 +254,10 @@ linux_ntsync_ioctl(struct thread *td, struct linux_ioctl_args *args)
} }
break; break;
case LNTSYNC_IOC_MUTEX_UNLOCK: case LNTSYNC_IOC_MUTEX_UNLOCK:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = copyin(data, &lma, sizeof(lma)); error = copyin(data, &lma, sizeof(lma));
ntsync_lma_to_ma(&ma, &lma); ntsync_lma_to_ma(&ma, &lma);
if (error == 0) { if (error == 0) {
@@ -257,11 +269,19 @@ linux_ntsync_ioctl(struct thread *td, struct linux_ioctl_args *args)
} }
break; break;
case LNTSYNC_IOC_MUTEX_KILL: case LNTSYNC_IOC_MUTEX_KILL:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = copyin(data, &val, sizeof(val)); error = copyin(data, &val, sizeof(val));
if (error == 0) if (error == 0)
error = ntsync_mutex_kill(td, fp, val); error = ntsync_mutex_kill(td, fp, val);
break; break;
case LNTSYNC_IOC_MUTEX_READ: case LNTSYNC_IOC_MUTEX_READ:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = ntsync_mutex_read(td, fp, &ma, &doco); error = ntsync_mutex_read(td, fp, &ma, &doco);
if (doco) { if (doco) {
ntsync_ma_to_lma(&lma, &ma); ntsync_ma_to_lma(&lma, &ma);
@@ -271,21 +291,37 @@ linux_ntsync_ioctl(struct thread *td, struct linux_ioctl_args *args)
} }
break; break;
case LNTSYNC_IOC_EVENT_SET: case LNTSYNC_IOC_EVENT_SET:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = ntsync_event_set(td, fp, &val); error = ntsync_event_set(td, fp, &val);
if (error == 0) if (error == 0)
error = copyout(&val, data, sizeof(val)); error = copyout(&val, data, sizeof(val));
break; break;
case LNTSYNC_IOC_EVENT_RESET: case LNTSYNC_IOC_EVENT_RESET:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = ntsync_event_reset(td, fp, &val); error = ntsync_event_reset(td, fp, &val);
if (error == 0) if (error == 0)
error = copyout(&val, data, sizeof(val)); error = copyout(&val, data, sizeof(val));
break; break;
case LNTSYNC_IOC_EVENT_PULSE: case LNTSYNC_IOC_EVENT_PULSE:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = ntsync_event_pulse(td, fp, &val); error = ntsync_event_pulse(td, fp, &val);
if (error == 0) if (error == 0)
error = copyout(&val, data, sizeof(val)); error = copyout(&val, data, sizeof(val));
break; break;
case LNTSYNC_IOC_EVENT_READ: case LNTSYNC_IOC_EVENT_READ:
if (fp->f_type != DTYPE_NTSYNC) {
error = ENOTTY;
break;
}
error = ntsync_event_read(td, fp, &ea); error = ntsync_event_read(td, fp, &ea);
if (error == 0) { if (error == 0) {
ntsync_ea_to_lea(&lea, &ea); ntsync_ea_to_lea(&lea, &ea);