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virtiofsd: Clean up inodes on destroy 

Clear out our inodes and fd's on a 'destroy' - so we get rid
of them if we reboot the guest.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2019-02-22 18:33:52 +00:00
parent bfc50a6e06
commit 771b01eb76
1 changed files with 26 additions and 0 deletions
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26
tools/virtiofsd/passthrough_ll.c
View File

@ -1169,6 +1169,25 @@ static void unref_inode_lolocked(struct lo_data *lo, struct lo_inode *inode,
} }
} }
static int unref_all_inodes_cb(gpointer key, gpointer value, gpointer user_data)
{
struct lo_inode *inode = value;
struct lo_data *lo = user_data;
inode->refcount = 0;
lo_map_remove(&lo->ino_map, inode->fuse_ino);
close(inode->fd);
return TRUE;
}
static void unref_all_inodes(struct lo_data *lo)
{
pthread_mutex_lock(&lo->mutex);
g_hash_table_foreach_remove(lo->inodes, unref_all_inodes_cb, lo);
pthread_mutex_unlock(&lo->mutex);
}
static void lo_forget_one(fuse_req_t req, fuse_ino_t ino, uint64_t nlookup) static void lo_forget_one(fuse_req_t req, fuse_ino_t ino, uint64_t nlookup)
{ {
struct lo_data *lo = lo_data(req); struct lo_data *lo = lo_data(req);
@ -2035,6 +2054,12 @@ static void lo_lseek(fuse_req_t req, fuse_ino_t ino, off_t off, int whence,
} }
} }
static void lo_destroy(void *userdata)
{
struct lo_data *lo = (struct lo_data *)userdata;
unref_all_inodes(lo);
}
static struct fuse_lowlevel_ops lo_oper = { static struct fuse_lowlevel_ops lo_oper = {
.init = lo_init, .init = lo_init,
.lookup = lo_lookup, .lookup = lo_lookup,
@ -2073,6 +2098,7 @@ static struct fuse_lowlevel_ops lo_oper = {
.copy_file_range = lo_copy_file_range, .copy_file_range = lo_copy_file_range,
#endif #endif
.lseek = lo_lseek, .lseek = lo_lseek,
.destroy = lo_destroy,
}; };
/* Print vhost-user.json backend program capabilities */ /* Print vhost-user.json backend program capabilities */