hfs_notification.c [plain text]
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/file.h>
#include <sys/dirent.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <sys/ubc.h>
#include <sys/quota.h>
#include <sys/kdebug.h>
#include "hfs.h"
#include "hfs_catalog.h"
#include "hfs_cnode.h"
#include "hfs_dbg.h"
#include "hfs_mount.h"
#include "hfs_quota.h"
#include "hfs_endian.h"
#include "BTreesInternal.h"
#include "FileMgrInternal.h"
void hfs_generate_volume_notifications(struct hfsmount *hfsmp)
{
fsid_t fsid;
u_int32_t freeblks, state=999;
if (hfsmp->hfs_flags & HFS_READ_ONLY) {
return;
}
fsid.val[0] = hfsmp->hfs_raw_dev;
fsid.val[1] = vfs_typenum(HFSTOVFS(hfsmp));
freeblks = hfs_freeblks(hfsmp, 1);
if (freeblks < hfsmp->hfs_freespace_notify_dangerlimit) {
state = 4;
} else if (freeblks < hfsmp->hfs_freespace_notify_warninglimit) {
state = 3;
} else if (freeblks < hfsmp->hfs_freespace_notify_nearwarninglimit) {
state = 2;
} else if (freeblks < hfsmp->hfs_freespace_notify_desiredlevel) {
state = 1;
} else if (freeblks >= hfsmp->hfs_freespace_notify_desiredlevel) {
state = 0;
}
if (state == 4 && !(hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK)) {
printf("hfs: set VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_dangerlimit);
#if HFS_SPARSE_DEV
hfs_lock_mount(hfsmp);
vnode_t backing_vp = hfsmp->hfs_backingvp;
if (backing_vp && vnode_get(backing_vp) != 0)
backing_vp = NULL;
hfs_unlock_mount(hfsmp);
if (backing_vp) {
struct vfsstatfs *sfs = vfs_statfs(vnode_mount(backing_vp));
printf("hfs: set VeryLowDisk: vol:%s, backingstore b_avail:%lld, tag:%d\n",
hfsmp->vcbVN, sfs->f_bavail, vnode_tag(backing_vp));
vnode_put(backing_vp);
}
#endif
hfsmp->hfs_notification_conditions |= (VQ_VERYLOWDISK|VQ_LOWDISK|VQ_NEARLOWDISK);
vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
} else if (state == 3) {
if (!(hfsmp->hfs_notification_conditions & VQ_LOWDISK)) {
printf("hfs: set LowDisk: vol:%s, freeblks:%d, warninglimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_warninglimit);
hfsmp->hfs_notification_conditions |= (VQ_LOWDISK|VQ_NEARLOWDISK);
vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
} else if (hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK) {
printf("hfs: clear VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_dangerlimit);
hfsmp->hfs_notification_conditions &= ~VQ_VERYLOWDISK;
vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
}
} else if (state == 2) {
if (!(hfsmp->hfs_notification_conditions & VQ_NEARLOWDISK)) {
printf("hfs: set NearLowDisk: vol:%s, freeblks:%d, nearwarninglimit:%d\n", hfsmp->vcbVN, freeblks,
hfsmp->hfs_freespace_notify_nearwarninglimit);
hfsmp->hfs_notification_conditions |= VQ_NEARLOWDISK;
vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
} else {
hfsmp->hfs_notification_conditions &= ~VQ_LOWDISK;
if (hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK) {
printf("hfs: clear VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks,
hfsmp->hfs_freespace_notify_dangerlimit);
hfsmp->hfs_notification_conditions &= ~VQ_VERYLOWDISK;
vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
}
}
} else if (state == 1) {
if (hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK) {
printf("hfs: clear VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks,
hfsmp->hfs_freespace_notify_dangerlimit);
hfsmp->hfs_notification_conditions &= ~VQ_VERYLOWDISK;
vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
}
} else if (state == 0) {
if (hfsmp->hfs_notification_conditions & (VQ_NEARLOWDISK|VQ_LOWDISK|VQ_VERYLOWDISK)) {
if (hfsmp->hfs_notification_conditions & VQ_NEARLOWDISK) {
printf("hfs: clear NearLowDisk: vol:%s, freeblks:%d, nearwarninglimit:%d, desiredlevel:%d\n", hfsmp->vcbVN,
freeblks, hfsmp->hfs_freespace_notify_nearwarninglimit, hfsmp->hfs_freespace_notify_desiredlevel);
}
if (hfsmp->hfs_notification_conditions & VQ_LOWDISK) {
printf("hfs: clear LowDisk: vol:%s, freeblks:%d, warninglimit:%d, desiredlevel:%d\n", hfsmp->vcbVN, freeblks,
hfsmp->hfs_freespace_notify_warninglimit, hfsmp->hfs_freespace_notify_desiredlevel);
}
if (hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK) {
printf("hfs: clear VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_warninglimit);
}
hfsmp->hfs_notification_conditions &= ~(VQ_VERYLOWDISK|VQ_LOWDISK|VQ_NEARLOWDISK);
if (hfsmp->hfs_notification_conditions == 0) {
vfs_event_signal(&fsid, VQ_UPDATE|VQ_DESIRED_DISK, (intptr_t)NULL);
} else {
vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
}
}
}
}