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package fsmonitor
import (
"context"
"errors"
"github.com/lxc/incus/v6/internal/linux"
"github.com/lxc/incus/v6/internal/server/fsmonitor/drivers"
"github.com/lxc/incus/v6/shared/logger"
)
// New creates a new FSMonitor instance.
func New(ctx context.Context, path string) (FSMonitor, error) {
startMonitor := func(driverName string) (drivers.Driver, logger.Logger, error) {
logger := logger.AddContext(logger.Ctx{"driver": driverName})
driver, err := drivers.Load(ctx, logger, driverName, path)
if err != nil {
return nil, nil, err
}
return driver, logger, nil
}
if !linux.IsMountPoint(path) {
return nil, errors.New("Path needs to be a mountpoint")
}
driver, monLogger, err := startMonitor("fanotify")
if err != nil {
logger.Warn("Failed to initialize fanotify, falling back on inotify", logger.Ctx{"err": err})
driver, monLogger, err = startMonitor("inotify")
if err != nil {
return nil, err
}
}
logger.Info("Initialized filesystem monitor", logger.Ctx{"path": path, "driver": driver.Name()})
monitor := fsMonitor{
driver: driver,
logger: monLogger,
}
return &monitor, nil
}
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