The edged weapons of these North African regions are as can be seen, extremely difficult to be exact in identifying due to extreme diffusion and hybridization. While this example has every prospect to include it with the 'khodmi' group, it may well be more specifically the common peasant knife known as a 'mous' (mu). In "Knives and Daggers" by Zdenek Faktor (Hamlyn, 1989, pp.30-31) these are described, "...exclusively folk or peasant weapon is the knife known as the mu. Single edged straight or curved blade, usually engraved with quotations from the Koran and simple wooden handle. The sheaths of Moroccan daggers are equipped with a ring to which a silk cord is tied. The dagger is worn on the left hip and the silk cord loops over the right shoulder".
In the illustrations of these in the reference the handle is simple as wooden as described, and with rounded end as yours, however they are guardless, and the blades are much narrower typically, similar to the Moroccan s'boula.
Certain features on your example suggest Algerian influence, including the guard, which seems more prevalent on certain Algerian knives and edged weapons there. Also, the interesting circular motif which appears actually is possibly associated with similar Central Asian symbols with ancient ancestry that relates to either sun worship or possibly a symbolic shield, either of these remaining uncertain. In any case, these symbols occur on weapons in Afghanistan and especially the Balkans, from where Ottoman association would have carried into North Africa as it did certainly in Algeria.
With prevalent Berber tribal movement between Morocco's eastern Saharan regions and Algeria, it would seem that these would be quite likely for the provenance of this dagger. As always, geographic boundaries often have little to do with the identification of ethnographic weapons in most cases, especially in North Africa.
Best regards,
Jim